JPH09318848A - Optical communication connection device - Google Patents

Abstract

An optical fiber F is fixed to a male connector 1A side so that a tip portion of the optical fiber F has a degree of freedom in position regulation in a space S. Then, the fitting mechanism D is formed on the upper part of the light receiving unit 41, and the tip of the optical fiber F is just fitted to the fitting mechanism D in a state where the male connector 1A and the female connector 11 are properly connected. . As a result, it is possible to easily absorb the size, mounting error, and the like, and obtain a state in which the optical fiber F and the optical center axis J of the coupling lens 44 are in good agreement.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical communication connection device for connecting an optical fiber and a light receiving device or a light emitting device.

[0002]

2. Description of the Related Art For example, for optically and physically coupling a light emitting element for transmitting and outputting an optical signal transmitted by an optical fiber or a light receiving element for receiving an optical signal transmitted by an optical fiber and the optical fiber. In addition, a connector (connection device) for optical communication is used.

7 and 8 show an example of the structure of such an optical communication connector. FIG. 7 is a perspective view showing the optical communication connector disassembled into parts, and FIG. 8 shows a state in which these parts are combined with each other.
It is sectional drawing shown by the cross section seen from b. The optical communication connector 0 shown in these figures is, as can be seen from FIG.
A mechanism for coupling the light emitting element and the optical fiber for the transmission path,
The optical communication connector is provided with a bidirectional coupling mechanism for coupling the light receiving element and the optical fiber for the receiving path.

The optical communication connector 0 is formed by combining a male connector 1 and a female connector 11. Two optical fibers F for transmission and reception are attached to the male connector 1, and a light receiving unit 31 having a light receiving element and a light emitting unit 41 having a light emitting element are attached to the female connector 11. In this case, the male connector 1 and the female connector 11 are made of resin.

The male connector 1 is constructed by integrally forming a main body block portion 2 and a fitting block portion 3 provided below the main body block portion and fitted into the female connector 11. In this male connector 1, elongated optical fiber insertion holes 5 are formed so as to penetrate from the upper surface portion of the main body block portion 2 to the bottom portion side of the fitting block portion 3. The lower tip portions of the optical fiber insertion holes 5 and 5 are formed as ferrules 4 and 4 that support the optical fiber F while protecting it, and the inside of the ferrules 4 and 4 has a diameter corresponding to the diameter of the optical fiber F. The optical fiber through hole 6 is formed.

Then, as shown in FIG. 7, the two optical fibers F have a fiber coating FC provided around them so as to protect the fibers F, with a predetermined length stripped from the tip,
It is inserted into the optical fiber insertion holes 5 and 5. From this state,
The two optical fibers F exposed from the fiber coating FC at the tips are inserted into the optical fiber through holes 6 in the ferrules 4 and 4, and at this time, as shown in FIG. 8, the tips of the optical fibers F and F have a predetermined length. Only the ends of the ferrules 4 and 4 are projected. It should be noted that the optical fibers F, F are attached so as to be fixed on the male connector 1 side by a caulking mechanism or the like (not shown) while being inserted as shown in FIG. Further, the optical fibers F, F are core wires, which are, as is well known, composed of a core layer and a cladding layer around the core layer.

Further, as shown in FIGS. 7 and 8, lock engaging portions 7, 7 for connecting and fixing the female connector 11 are provided on both sides of the fitting block portion 3 of the male connector 1 in the longitudinal direction. Are formed respectively. Also, male connector 1
As shown in FIG. 7, engaging projections for engaging and positioning the engaging groove 13 of the female connector 11 are formed on both sides of the side surface of the fitting block 3 in the lateral direction.

A block fitting portion 12 is formed on the upper portion of the female connector 11, and this block fitting portion 12 serves as a space for fitting and coupling the fitting block portion 3 of the male connector 1 described above. In this block fitting portion 12, two ferrule guide pipes 15, 15 are formed. The ferrule guide pipes 15 and 15 are formed to have inner diameters (ferrule fitting holes 16 and 16) corresponding to the outer diameters of the ferrules 4 and 4 of the male connector 1, and as shown in FIG. The ferrules 4 and 4 are fitted into the ferrule fitting holes 16 and 16 with the female connector 11 connected.

Further, unit spaces 17, 17 for mounting the light receiving unit 31 and the light emitting unit 41 are formed on the female connector 11 side. The unit spaces 17 and 17 are formed in the lower portions of the ferrule guide pipes 15 and 15, respectively, and the ferrule fitting holes 16 and 16 are located on the upper surface portion. As the internal shape of the unit spaces 17, 17, the light receiving unit 31
And the light emitting unit 41 is properly inserted and attached as shown in FIG.
1 and the light emitting unit 41 are formed to have a mechanism for fixing them.

Here, the structure of the light receiving unit 31 and the light emitting unit 41 will be described by taking the light receiving unit 31 as an example. The light receiving unit 31 is configured to include a light receiving element for receiving the light transmitted by the optical fiber F in the unit main body 32 formed of, for example, resin. The upper surface of the unit main body 32 has a substantially hemispherical concave portion 3
3 is formed, and a coupling lens for optically coupling the light transmitted by the optical fiber F and the light receiving element is provided at the center position of the concave portion 33. The electrode pin 35 is provided, for example, as shown in the drawing, and is connected to, for example, a substrate (not shown). The light emitting unit 41 has the same configuration and outer diameter shape as the light receiving unit 31, except that a light emitting element for outputting light to be transmitted by the optical fiber F is provided instead of the light receiving element of the light receiving unit 31. Therefore, the description thereof will be omitted.

Optical fibers F, F are attached to the male connector 1, and a light receiving unit 31 is attached to the female connector 11.
With the light emitting unit 41 attached and the male connector 1 and the female connector 11 are connected, as shown in FIG. 8, a locking member formed on the fitting block portion 2 of the male connector 1. The mating parts 7, 7, 7, 7 are engaged with the lock engaging holes 14, 14, 14, 14 on the female connector 11 side so that the connection between the male connector 1 and the female connector 11 is not accidentally released. A locked state is obtained.
Note that the lock mechanism shown in this figure is merely an example, and other lock mechanisms may be used.

When the male connector 1 and the female connector 11 are connected to each other, as shown in FIG.
The coupling lens 44 of No. 1 and the tip of the optical fiber F are kept at a required proper distance, and the optical central axes J of the coupling lens 44 and the optical fiber F are made to coincide with each other. Although not shown in FIG. 8, the male connector 1 and the female connector 11 are similarly arranged on the light receiving unit 31 side.
In the connected state, the coupling lens 34 and the optical center axis J of the optical fiber F are made to coincide with each other. The accuracy for matching the optical central axis J of the coupling lens 44 and the optical fiber F is, for example, at least the fitting mechanism A shown in FIG.
It depends on B and C. The fitting mechanism A is a mechanism for inserting and fixing the optical fiber F into the ferrule 4 of the male connector 1, and the fitting mechanism B inserts the ferrule 4 into the ferrule guide pipe 15 of the female connector 11. This is the mechanism of the part to be fitted in this way. Further, the fitting mechanism C is
It serves as a mechanism of a portion for inserting and fixing the light receiving unit 31 or the light emitting unit 41 in the unit spaces 17, 17 of the female connector 11.

[0013]

For example, taking the light emitting unit 41 side as an example, the coupling lens 4 of the light emitting unit 41 is used.
4 and the optical center axis of the optical fiber F are deviated from each other, the transmission loss of the optical signal between the optical fiber F and the light emitting unit 41 is increased by that much, the transmission efficiency is lowered, and a part of the light is reflected to cause S. This causes deterioration of the / N ratio. In such a connector for optical communication, it is naturally preferable to suppress the transmission loss of the optical signal of light as much as possible to improve the transmission efficiency.

However, in the optical communication connector 0 having the structure shown in FIGS. 7 and 8, the fitting mechanisms A, B, and C have a total mounting error of 20 μm in the fitting mechanisms A and B, respectively. An error of about 50 μm occurs in the fitting mechanism C, and as a result, an error of about 74 μm as a root mean square value is actually generated between the optical center axis of the coupling lens 34 and the optical center axis of the optical fiber F. I know it will happen. Then, due to this error amount, the loss of the optical signal is about 1.0 dB on average. However, the mounting error in the fitting mechanisms A, B, and C is an error amount necessary for compatibilization of parts constituting the optical communication connector 0 and compensation for temperature change, and is simply the fitting mechanism A,
Optical communication connector 0 so that high precision can be obtained for B and C
It cannot be solved simply by improving the dimensional accuracy of each part that composes.

In the optical communication connector 0 shown in FIGS. 7 and 8, the fitting mechanism A, so that the coupling lens 34 and the optical center axis of the optical fiber F can be correspondingly obtained.
It has a relatively complicated structure composed of B, C and the like. As the structure of the optical communication connector becomes more complicated as described above, for example, a technique of die processing is required and a yield is lowered, which is disadvantageous in terms of cost. Although the description so far has been made on the light emitting unit side as an example, such a problem naturally exists not only on the light emitting unit 41 side but also on the light receiving unit 31 side.

[0016]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides an optical system in which the optical center axes of the light-receiving / light-emitting element and the optical fiber are matched with each other even with a simple structure. An object is to obtain a communication connection device and improve the transmission efficiency of an optical signal.

Therefore, in the optical communication connection device for connecting the optical fiber and the light receiving device or the light emitting device for transmitting or receiving the optical signal transmitted by the optical fiber, the connecting end portion of the optical fiber. The side is provided for the optical receiving device or the light emitting device and the optical fiber fixing means capable of fixing the optical fiber so as to have a required degree of freedom in position regulation, and the tip of the optical fiber can be fitted. The optical center axis of the optical fiber and the optical center of the light-receiving device or the light-emitting device in a state in which the optical fiber has a fitted portion formed in a different shape and the tip end of the optical fiber is fitted in the fitted portion. The connection device for optical communication is configured to include the connection mechanism means configured so that the axes thereof coincide with each other.

According to the above structure, the optical fiber tip is directly fitted to the fitted portion provided in the light receiving / emitting device, whereby the optical center between the light receiving / emitting device and the optical fiber is set. It is possible to align the axes with high accuracy. Therefore, it is possible to omit the complicated structure for obtaining the positioning accuracy between the optical fiber and the light receiving / light emitting element.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT FIG. 1 is a sectional view showing the structure of an optical communication connector according to a first embodiment of the present invention. The optical communication connector 0A according to the present embodiment shown in this figure has a basic outer diameter shape and structure as shown in FIG.
The same as the optical communication connector 0 shown in FIG.
The internal mechanism is supposed to be modified as shown in FIG. Therefore, this drawing is a cross-sectional view of the optical communication connector 0A according to the present embodiment taken along the line ab of the position shown in FIG. Further, the light receiving unit 31 which is a part of the optical communication connector 0A of the present embodiment.
The light emitting unit 41 also has the same configuration except that the fitting mechanism D is formed as described later. Therefore, in FIG. 1, the same parts as those in FIGS. 7 and 8 are designated by the same reference numerals and the description thereof will be omitted.

In the optical communication connector 0A shown in FIG. 1A, as can be seen by comparing with the structure of the optical communication connector 0 in FIG. 7, the male connector 1A is not provided with a ferrule. Along with this, the ferrule guide pipe 15 having the function of guiding the optical fiber F to the coupling lens 44 of the light emitting unit 41 by inserting the ferrule is not provided on the female connector 11A side. As a result, for example, a portion (coupling end portion) of the optical fiber F having a corresponding length from the tip in the space S inside the fitting block portion 3 is not regulated in position, and the portion of the optical fiber itself may move with respect to its movement. The degree of freedom based on the flexibility will be given. In this embodiment, as the optical fiber F, a flexible one such as a plastic fiber is used.

In the present embodiment, when the male connector 1A and the female connector 11A are properly connected and fixed, as shown in FIG. 1B, the tip of the optical fiber F faces the light emitting unit 41 side. They are connected so that they fit directly.

FIG. 1B is an enlarged view of a portion indicated by a broken line in FIG. As can be seen from this figure, the unit body 4 of the light emitting unit 41 of the present embodiment
A fitting hole 52 is formed on the upper surface of the second lens 2, and the coupling lens 44 is provided at the center position on the bottom surface of the fitting hole 52. A guide slope 51 is formed as a tapered slope near the entrance of the fitting hole 52.

For example, by fitting the fitting block portion 3 into the block fitting hole 12 to connect the male connector 1A and the female connector 11A,
The tip of the optical fiber F has the fitting hole portion 5 of the light emitting unit 41.
2 Approaching the neighborhood. Then, the tip of the optical fiber F is fitted into the fitting hole 52 so as to be guided by the guide slope 51 around the fitting hole 52. In the fitting hole portion 52, the inner wall portion indicated by the arrow in FIG.
Has a shape corresponding to the outer diameter of the tip end of the optical fiber F. Therefore, when the male connector 1A and the female connector 11A are completely connected, the state where the tip end of the optical fiber F is fitted in the fitting hole portion 52 is Will be obtained. That is, the optical fiber F
The light emitting unit 41 and the light emitting unit 41 are directly coupled in the fitting hole 52. This is the fitting mechanism D of the present embodiment. In the state where the optical fiber F is fitted to the light emitting unit 41 by the fitting mechanism D, as shown in FIG.
As shown in (b), it is possible to obtain a state in which the optical fiber F and the optical center axis J of the coupling lens 44 are in good agreement.

In order to fit the optical fiber F into the light emitting unit 41 by such a fitting mechanism D, it is required to properly set the length of the optical fiber F exposed in the space S. However, this can be easily set by the current processing technology.

FIG. 2 shows an example of a state in which the optical fiber F is coupled to the light emitting unit 41 by the optical communication connector 0A of this embodiment. The same parts as those in FIG. In this case, the optical center axis J1 of the optical fiber F and the optics of the coupling lens 44 may be changed due to factors such as dimensional errors of the formed products of the male connector 1A and the female connector 11A, displacement of the mounting position of the light emitting unit, and the like. The state where the target central axis J2 is displaced is shown. The actual deviation between the optical center axes J1 and J2 is about 100 μm.

Even if the optical central axes J1 and J2 are deviated from each other as described above, in the optical communication connector 0A of this embodiment, when the male connector 1A and the female connector 11A are combined, a flexible optical fiber is provided. The tip of F is the fitting mechanism D
(See FIG. 1 (b)) The guide slope 51 is guided along the inclined surface to be fitted into the fitting hole 52. At this time, in the coupling mechanism of the male connector 1A and the female connector 11A, the mutual fitting parts (the fitting block part 3 and the block fitting part 12, and the lock engaging parts 7, 7 and the lock engaging holes 14, 14) are arranged. Since the connecting portions have a play based on a predetermined allowable amount, they can be combined with a slight inclination. As a result of having such a mechanism, it becomes possible to match the optical central axes of the optical fiber F and the coupling lens 44 in a good state as shown in FIG.

As described above, in the present embodiment, even if there are some errors in the dimensional accuracy and the mounting position of the connector,
The optical fiber F and the optical center axis J of the coupling lens 44 can be matched with each other with good accuracy. That is, in the optical communication connector 0A of the present embodiment, the dimensional error of the formed product of the male connector 1A and the female connector 11A and the error due to the displacement of the mounting position of the parts are absorbed, and the optical fiber and the coupling lens are always connected. The optical fiber and the light emitting element can be coupled so that the target central axis J is well matched. That is, the transmission efficiency of light between the optical fiber and the light emitting element is improved.

The optical communication connector 0 of this embodiment is also used.
In A, the positioning is performed with sufficient accuracy so that the optical fiber F and the optical center axis J of the coupling lens 44 coincide with each other by the fitting mechanism D as described above. Therefore, the fitting mechanisms A, B, C as shown in FIG.
Need not be formed. These fitting mechanisms A, B, C
In order to form the connector, the amount of resin used as the material of the connector is increased correspondingly, and a corresponding technique is required for mold processing for obtaining the dimensional accuracy within a required allowable range. In the present embodiment, the fitting mechanisms A, B, and C are not provided, so that the material cost can be reduced and the yield can be improved, and the cost can be reduced accordingly. The description so far is for the light emitting unit 41.
Although the configuration of the light emitting system corresponding to the side has been described, the other light receiving unit 3 not shown in FIGS. 1 and 2 is provided.
The fitting mechanism D is similarly formed in the light receiving system to which 1 corresponds. That is, the fitting mechanism D similar to that described with reference to FIG. 1 is provided on the light receiving unit 31 side as well, and has the same function and effect.

FIG. 3 is a sectional view showing an optical communication connector according to a second embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. In this case as well, the basic outer diameter shape, structure, etc. may be the same as those of the optical communication connector shown in FIG. 7, and therefore the light receiving system on the side of the light receiving unit 31 is also the same as that in FIG. It is assumed that the structure is adopted.

In the optical communication connector 0B shown in FIG. 3A, a ferrule 4 for protecting the tip portion of the optical fiber F exposed in the space S is provided on the inner wall side of the fitting block portion 3 of the male connector 1B. It is provided. The ferrule 4 is integrally formed with the main body of the male connector 1B, for example. In this case, the male connector 1B is made of a material having some flexibility such as resin, and therefore the ferrule 4 itself has flexibility.

In the present embodiment, when the male connector 1A and the female connector 11A are properly connected and fixed, as shown by the broken line portion in FIG.
The front end portion of the ferrule 4 provided around the is connected to the light emitting unit 41 side so as to be directly fitted thereto.

FIG. 3B is an enlarged view of the fitting mechanism E of the present embodiment as a portion indicated by the broken line in FIG. 3A. In this case, the fitting hole 52 is formed in a shape corresponding to the diameter of the tip of the ferrule 4. Further, the coupling lens 44 is provided at the center position on the bottom surface of the fitting hole portion 52, and the guide slope 51 is formed near the entrance of the fitting hole portion 52 in the case of the previous embodiment. It is similar to the fitting mechanism D. In the present embodiment, by connecting the male connector 1A and the female connector 11A, the tip of the ferrule 4 is moved to the light emitting unit 4
1 approaching the vicinity of the fitting hole 52, the guide slope 51
And is fitted into the fitting hole portion 52 by being guided by. As a result, when the male connector 1B and the female connector 11A are completely connected, a state in which the tip of the ferrule 4 is fitted in the fitting hole 52 is obtained. That is, in this embodiment, the optical fiber F is coupled to the light emitting unit 41 side together with the ferrule 4 that protects the optical fiber F.

As described above, since the ferrule 4 is made of resin, the ferrule 4 has a flexibility in addition to the flexibility of the optical fiber F inside. Therefore, even if the optical center axis between the optical fiber F and the coupling lens 44 is deviated due to some error, for example, as in the situation of FIG. 2 described above, the fitting mechanism E of the present embodiment emits light. If the state where the ferrule 4 is fitted to the unit 41 side is obtained, the optical fiber F and the coupling lens 44 can be coupled so that the optical central axis J of the coupling lens 44 is well matched. Such a fitting mechanism E is similarly formed on the side of the light receiving unit 31. Therefore, also in the light receiving system, a good optical center axis of the optical fiber F and the coupling lens 34 is similarly provided. Are to be matched.

FIG. 4 is a sectional view showing the structure of an optical communication connector according to the third embodiment of the present invention. The same parts as those in FIG. 1 are designated by the same reference numerals and the description thereof will be omitted. The optical communication connector 0C shown in this figure is the same as that of the first embodiment shown in FIG. 1 in that the male connector 1A and the female connector 11A are connected and the fitting mechanism D is provided. Instead of the light receiving unit 31 or the light emitting unit 41, the space 17 is provided with a light receiving and emitting unit 61 integrally having both a light receiving function and a light emitting function. That is, the optical communication connector 0C of the present embodiment corresponds to a so-called one-core bidirectional optical communication line. Therefore, in the optical communication connector 0C of the present embodiment, the light receiving system and the light emitting system are independent. However, they are not provided as a single light receiving and emitting system. Therefore, the overall appearance structure of the optical communication connector 0C is
Although not specifically shown, for example, of the configurations shown in FIG. 7, only the one system in which either the light receiving system or the light emitting system is omitted may be formed as an external structure that can be coupled.

The above-mentioned light emitting / receiving unit 61 may have the same basic appearance as the light receiving unit 31 and the light emitting unit 41 as shown in FIG. A light emitting / receiving element 100 having both functions is provided. The light emitting / receiving element 100 is a bidirectional photoelectric conversion device that transmits an electric signal as an optical signal and converts the received light into an electric signal. The light emitting / receiving unit 61
Parts other than the light emitting / receiving element 100 forming the same are assigned the same reference numerals as those of the light emitting unit 41, and description thereof will be omitted.

Therefore, the structure of the light emitting / receiving element 100 will be described with reference to FIGS. FIG. 5 shows a light emitting / receiving element 1.
00 is a perspective view showing the overall structure of No. 00, and FIG. 6 is a side view of the light emitting / receiving element 100 seen from the side. In the light emitting / receiving element 100 shown in these figures, the upper surface portion 1 of the substrate 101 is
01a, the light receiving unit 102 and the laser light emission source 107
The prism 103, the semiconductor element 105, and the monitor light receiving unit 106 are provided. For example, the substrate 10
1 has a length S1 of about 3.3 mm and a width S2 of about 1.8 mm.
i, gallium arsenide (GaAs) semiconductor substrate or the like is used. The light receiving portion 102 is formed on the upper surface portion 101a of the substrate 101.

The prism 103 used here is also called a micro prism or a trapezoidal prism, and one side of this prism 103 has a semi-transparent mirror 10 having a slope shape.
4 are formed. The semi-transmissive mirror 104 reflects the optical signal L1 transmitted from the laser emission source 107, and transmits the optical signal L2 transmitted and output from the optical fiber F of FIG. 6 and introduced through the coupling lens 44. It is provided. The inclination angle of the semi-transmissive mirror 104 is set to be 45 ° with respect to the plane of the substrate 101, for example.

The semiconductor element 105 includes the above-mentioned laser light emission source 107 and the monitor light receiving section 106. A laser diode is used as the laser emission source 107, and a transmission portion for transmitting the optical signal L1 from the laser emission source 107 is arranged to face the semi-transmissive mirror 104 of the prism 26. The monitor light receiving unit 106 receives light from the rear side of the laser emission source 107. By monitoring the laser light L3 in this manner, the sending state of the optical signal L1 from the laser emission source 107 is monitored and the drive of the laser emission source 107 is controlled. The light receiving unit 22 is provided to receive the optical signal L2 introduced from the optical fiber F via the coupling lens 44, and is configured by, for example, a photodiode.

The light emitting / receiving element 100 having such a configuration is packaged and provided in the unit main body together with the coupling lens 44, so that the light emitting / receiving unit 61 having a configuration shown in a side view in FIG. 4 is obtained.

In this case, the light emitting / receiving unit 61
A fitting mechanism D is formed to fit with the optical fiber F, and the coupling lens 44 of the light emitting / receiving unit 61 is formed.
And the optical central axis of the optical fiber F are coupled so as to be in good agreement. In this case, the optical signal is transmitted and received by one optical fiber F.

Although the optical communication connector 0C shown in FIG. 4 has a structure including the fitting mechanism D conforming to the first embodiment, the optical communication connector 0C conforms to the second embodiment. It may be configured to include the fitting mechanism DE. Further, the detailed structure, shape, and the like of the optical communication connector according to each of the above-described embodiments may be changed according to actual usage conditions and the like.

[0042]

As described above, according to the present invention, the optical fiber and the light-receiving / light-emitting device are fitted to each other with the tip end portion of the optical fiber fitted to the fitted portion formed on the light-receiving / light-emitting device. By having a fitting mechanism configured such that the optical center axis of the coupling lens of the optical axis coincides with the coupling lens, for example, the dimensional error and the mounting error of the parts constituting the optical communication connection device are absorbed, The optical central axes of the optical fiber and the coupling lens of the light receiving / light emitting device can be matched. This allows
It has an effect that the transmission loss of the optical signal in the coupling portion can be easily reduced. Along with this, it is possible to omit a fitting portion or the like for obtaining a positioning accuracy of a required level or higher, and there is also an effect that the cost is reduced accordingly.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing the structure of an optical communication connector according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing an example of a fitted state of optical fibers in the optical communication connector of the first embodiment.

FIG. 3 is a sectional view showing a structure of an optical communication connector according to a second embodiment of the present invention.

FIG. 4 is a sectional view showing the structure of an optical communication connector according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing a configuration of a light emitting / receiving element.

FIG. 6 is a side view showing a configuration of a light emitting / receiving element.

FIG. 7 is a perspective view showing an external structure of an optical communication connector.

FIG. 8 is a sectional view showing a structure of an optical communication connector as a conventional example.

[Explanation of reference numerals] 0A, 0B, 0C Optical communication connector, 1A, 1B Male connector, 4 ferrule, 11 Female connector, 7 Lock engaging part, 14 Lock engaging hole, 31 Light receiving unit, 41 Light emitting unit, 44 Coupling Lens, 61 light emitting and receiving unit, F optical fiber, D, E fitting mechanism

Claims (7)

[Claims] 1. An optical communication connection device for connecting an optical fiber and a light receiving device or a light emitting device for transmitting or receiving an optical signal transmitted by the optical fiber, wherein a connecting end of the optical fiber is provided. The optical fiber fixing means capable of fixing the optical fiber so that the side has a required degree of freedom in position regulation and the light receiving device or the light emitting device, and the tip portion of the optical fiber is fitted. While having a fitted portion formed in a possible shape, and in a state in which the tip end portion of the optical fiber is fitted in the fitted portion, the optical center axis of the optical fiber and the light receiving device or light emission. A connecting device for optical communication, comprising: a connecting mechanism means configured such that the optical central axes of the device coincide with each other. 2. The connection device for optical communication according to claim 1, wherein the fitted portion is formed in a shape in which a tip end portion of a core wire of the optical fiber can be fitted. 3. The optical communication connection according to claim 1, wherein the fitted portion is formed in a shape capable of fitting a tip portion of a ferrule provided around the optical fiber. apparatus. 4. The connection device for optical communication according to claim 3, wherein at least the ferrule part is made of resin. 5. The taper-shaped slope portion for introducing the distal end portion of the optical fiber to the periphery of the inlet portion is formed in the fitted portion, and the fitted portion is formed. Optical communication connection device. 6. The optical communication connection device according to claim 1, wherein the light-receiving device and the light-emitting device are light-receiving and light-emitting integrated elements configured to have both a light-receiving function and a light-emitting function. 7. The optical communication connection device according to claim 1, wherein the optical fiber is a plastic optical fiber.