JPH02266306A - Fusion splicing method for optical fiber - Google Patents

Fusion splicing method for optical fiber

Info

Publication number
JPH02266306A
JPH02266306A JP8858189A JP8858189A JPH02266306A JP H02266306 A JPH02266306 A JP H02266306A JP 8858189 A JP8858189 A JP 8858189A JP 8858189 A JP8858189 A JP 8858189A JP H02266306 A JPH02266306 A JP H02266306A
Authority
JP
Japan
Prior art keywords
optical fiber
microscope
directions
fusion splicing
straight line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8858189A
Other languages
Japanese (ja)
Inventor
Tsutomu Watanabe
勤 渡邊
Shinko Hamada
浜田 真弘
Akira Yanagi
公 柳
Yasuo Asano
康雄 浅野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Priority to JP8858189A priority Critical patent/JPH02266306A/en
Publication of JPH02266306A publication Critical patent/JPH02266306A/en
Pending legal-status Critical Current

Links

Landscapes

  • Mechanical Coupling Of Light Guides (AREA)

Abstract

PURPOSE:To simplify the internal structure of a fusion splicing device mechanically and to reduce the size and weight by moving one microscope on the straight line connecting optimum focus positions in two right-angled directions. CONSTITUTION:The position of the microscope 4 at the optimum focus position of a light beam a which is made incident on the center of an optical fiber 1 at 45 deg. to the vertical axis of the optical fiber 1 and reflected at a point m1 on a mirror 2 is denoted as P1 and the position of a microscope 4' at the opti mum focus position of a light beam B which is reflected at 45 deg. to the mirror 2 and made incident on the center O of the optical fiber 1 at right angles to the light beam A is denoted as P2. Here, when O-m1 = a and m1-P1 = b, O-P2 = a+b and the microscope 4 is moved from P1 to P2 on the straight line connecting P1 and P2. Consequently, when the optical fiber is observed in two right-angled directions, one microscope can be moved on one straight line, so only one actuator such a motor, one controller, etc., are required.

Description

【発明の詳細な説明】 (M集土の利用分野) 本発明は顕微鏡を用いて光ファイバを直角2方向から観
察し、軸ずれ計測、端面位置決めを行なった後、融着接
続する光ファイバの融着接続方法に関するものである。
Detailed Description of the Invention (Field of Application of M Soil Collection) The present invention uses a microscope to observe an optical fiber from two perpendicular directions, and after measuring the axis misalignment and positioning the end face, The present invention relates to a fusion splicing method.

(従来の技術) 光ファイバの低損失接続を実現するためには高精度な軸
ずれ検出が要求される。この軸ずれ検出のための観察法
として、2方向からの観察が高精度な紬ずれ検出精度を
達成することが、例えば昭和83年電子情報通信学会春
季全国大会B−825r光フアイバテープ心線の二方向
観察による軸ずれ検出法」に示されている。
(Prior Art) In order to realize a low-loss connection of optical fibers, highly accurate axis misalignment detection is required. As an observation method for detecting this axis misalignment, observation from two directions can achieve high precision misalignment detection. Axis misalignment detection method using two-directional observation”.

第2図はこのような、光ファイバを直角2方向から観察
する観察系の説明図である。
FIG. 2 is an explanatory diagram of such an observation system for observing an optical fiber from two directions at right angles.

図面に示すように、光ファイバ(1)の垂直軸方向に対
して45度の角度に設置した光源(3)より照明し、上
記垂直軸方向と並行に配置したミラー(2)により導い
た光ファイバ(1)像を先の垂直方向に対して45度の
角度から観察するものである。
As shown in the drawing, light is illuminated by a light source (3) installed at an angle of 45 degrees to the vertical axis of the optical fiber (1) and guided by a mirror (2) placed parallel to the vertical axis. The fiber (1) image is observed from an angle of 45 degrees with respect to the vertical direction.

即ち、光ファイバ(1)の垂直軸方向に対して45度の
方向に入射し、ミラー(2)にて反射した光線(ム)を
P、に位置する顕微鏡(4)で観察し、ついで、ミラー
(2)にて反射し、上記光線(A)と直交した方向に光
ファイバ(りに入射した光線(B)をP2に位置する顕
微鏡(4′)で観察するものである。
That is, the light beam (mu) incident on the optical fiber (1) in a direction of 45 degrees with respect to the vertical axis direction and reflected by the mirror (2) is observed with a microscope (4) located at P, and then, The light beam (B) reflected by the mirror (2) and incident on the optical fiber (in a direction perpendicular to the light beam (A)) is observed with a microscope (4') located at P2.

(解決しようとする課題) 上述した従来の2方向観察を1つの顕微鏡(4)で実施
するためには、図中、光線(ム)の方向と、光線(B)
の方向の観察に適した位置に顕微M (4)を移動させ
る必要がある。これを実現するためには、焦点方向(χ
方向)及びこのχ方向と紙面上で直交する方向(y方向
)に顕微鏡(4)を移動させる必要がある。
(Problem to be solved) In order to carry out the conventional two-directional observation described above with one microscope (4), it is necessary to
It is necessary to move the microscope M (4) to a position suitable for observation in the direction. To achieve this, the focal direction (χ
direction) and the direction (y direction) orthogonal to this χ direction on the paper surface (y direction).

第4図は、このようなχ方向及びy方向に移動を実現す
るための装置の一例の斜視図である。
FIG. 4 is a perspective view of an example of a device for realizing such movement in the χ and y directions.

図面において、(11)は顕微鏡(4)を第2図のy方
向へ移動させるためのボールネジ、(I4)は駆動用の
パルスモータ、(13)はパルスモータ(1’4)の駆
動力をボールネジ(1皿)に伝達するためのベルトであ
る。(2I)は顕微鏡(4)を第2図のχ方向に移動さ
せるためのボールネジで、図示されていないが、同様に
パルスモータ及びベルトを具えている。
In the drawing, (11) is a ball screw for moving the microscope (4) in the y direction in Figure 2, (I4) is a pulse motor for driving, and (13) is a drive force of the pulse motor (1'4). This is a belt for transmitting data to a ball screw (one disc). (2I) is a ball screw for moving the microscope (4) in the χ direction in FIG. 2, and although not shown, it is similarly equipped with a pulse motor and a belt.

このように、顕微鏡(4)をχ方向及びy方向の2方向
に移動させようとすると、駆動させるための制御回路、
モータ等のアクチエエータが2組づつ必要とする。さら
に、融着装置本体に、例えば第4図に示すχ方向に移動
させる駆動系を固定した場合、図のようにy、方向の駆
動系を同時に動かす必要があり機構的にも複雑であった
。しかも、y方向の駆動系の重量がχ方向の駆動系のア
クチュエータにかかるため、高精度な位置決めを行なう
ときに慣性力が働き、精度の面でも問題があった。
In this way, when trying to move the microscope (4) in two directions, the χ direction and the y direction, the control circuit for driving the microscope (4),
Two sets of actuators such as motors are required. Furthermore, if a drive system that moves in the χ direction as shown in Figure 4 is fixed to the fuser body, for example, it is necessary to move the drive system in the y direction at the same time, which is mechanically complicated. . Moreover, since the weight of the drive system in the y direction is applied to the actuator of the drive system in the χ direction, inertial force acts when performing highly accurate positioning, which also poses a problem in terms of accuracy.

(課題を解決するための手段) 本発明は上述の問題点を解消し、光ファイバを観察する
顕微鏡の駆動を簡略化した光ファイバの融着接続方法を
提供するもので、その特徴は、直角2方向のそれぞれの
最適焦点位置を結ぶ直線上を1つの顕微鏡を移動させて
光ファイバの直角2方向からの観察を行なうことにある
(Means for Solving the Problems) The present invention solves the above-mentioned problems and provides an optical fiber fusion splicing method that simplifies the driving of a microscope for observing optical fibers. The objective is to move one microscope on a straight line connecting the optimum focus positions in two directions to observe an optical fiber from two orthogonal directions.

第1図は本発明の光ファイバの融着接続方法において、
光フ1イパを直角2方向から観察する観察系の具体例の
説明図である。なお、第2図と同一記号は同一部位をあ
られしている。
FIG. 1 shows the optical fiber fusion splicing method of the present invention.
FIG. 2 is an explanatory diagram of a specific example of an observation system for observing an optical fiber from two directions at right angles. Note that the same symbols as in FIG. 2 represent the same parts.

図面において、(PI)は光ファイバ(1)の垂直軸に
45度の角度をもって光ファイバ(1)の中心に入射し
、ミラー(2)上の点(諺、)にて反射した光線(ム)
の最適焦点位置における顕微鏡(4)の位置である。又
(PlI)はミラー(2)に45度の角度をもって反射
し、上記光1M(ム)に光ファイバ口)の中心(0)に
おいて、これに直交して入射した光線(B)の最適焦点
位置における顕微鏡(4′)の位置である。しかして、
これらの点(P、)(P、)と光′21イパ(1)の中
心(0)、ミラー上の点(園、)とは図のような関係に
あり、0−−t= 81J−p、=bとするときO−P
*= a + bの関係にある。従って、Iiftm(
4)の移動は上記P、とP2を結ぶ直線上をP、→Pコ
へ移動させればよいことになる。
In the drawing, (PI) is the ray (PI) that is incident on the center of the optical fiber (1) at an angle of 45 degrees to the vertical axis of the optical fiber (1) and reflected at a point on the mirror (2). )
is the position of the microscope (4) at its optimum focus position. In addition, (PlI) is reflected by the mirror (2) at an angle of 45 degrees, and the optimum focus of the ray (B) that is incident perpendicularly to the center (0) of the optical fiber opening is reflected by the mirror (2). The position of the microscope (4') in the position. However,
These points (P,) (P,), the center (0) of the light '21 ipa (1), and the point on the mirror (Sono,) have the relationship as shown in the figure, and 0--t=81J- When p, = b, O-P
There is a relationship of *= a + b. Therefore, Iiftm(
For the movement 4), it is sufficient to move from P to P on the straight line connecting P and P2.

(実施例) 第3図は上述のように、11[14)をp、−+p。(Example) In FIG. 3, as mentioned above, 11 [14) is p, -+p.

の一方向へ移動させる駆動系の実施例の説明図である。FIG. 3 is an explanatory diagram of an embodiment of a drive system that moves the vehicle in one direction.

 (11)は顕微鏡(4)を一方向へ移動させるための
ボールネジであり、顕微鏡(4)はこれに対して45度
の角度で取付けられている。(4I)は顕微鏡(4)の
対物レンズ% (42)はIN II ml (4)に
組込まれたカメラN (12)はその画像処理部である
(11) is a ball screw for moving the microscope (4) in one direction, and the microscope (4) is attached at an angle of 45 degrees with respect to this ball screw. (4I) is the objective lens of the microscope (4) % (42) is IN II ml A camera N (12) incorporated in (4) is its image processing unit.

又(13)はパルスモータ(14)の駆動力をボールネ
ジ(11)に伝達するベル)、(15)はモータの制御
回路である。
Further, (13) is a bell for transmitting the driving force of the pulse motor (14) to the ball screw (11), and (15) is a control circuit for the motor.

(発明の効果) 以上説明したように、本発明の光ファイバの融着接続方
法によれば、光ファイバを直角2方向から観察するのに
、1つの顕微鏡を1つの直線方向に移動させることで可
能となるので、モータ等のアクチュエータ、制御回路等
を1組で実現できる。よって、融着接続atの内部構造
を機構的に簡略化でき、小型軽量化が出来る。
(Effects of the Invention) As explained above, according to the optical fiber fusion splicing method of the present invention, in order to observe an optical fiber from two orthogonal directions, one microscope can be moved in one linear direction. Therefore, an actuator such as a motor, a control circuit, etc. can be realized in one set. Therefore, the internal structure of the fusion splice AT can be mechanically simplified and the size and weight can be reduced.

このため、光ファイバの融着接続時に接続装置をマンホ
ール内へ持ち込むことが容易になり、作業性が向上する
Therefore, the splicing device can be easily carried into the manhole during fusion splicing of optical fibers, improving work efficiency.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の光ファイバの融着接続方法において光
ファイバを直角2方向から観察する観察系の具体例の説
明図である。 第2図は従来の光ファイバを直角2方向から観察する観
察系の説明図である。 第3図は本発明における顕微鏡の駆動系の実施例の説明
図である。 第4図は第2図における顕微鏡の駆動系の一例の説明図
である。 1・・・光ファイバ、2・・・ミラー 3・・・光源、
4・・・顕微鏡、!!・・・ボールネジ、+2・・・画
像処理部、+3・・・ベルト、+4・・・パルスモータ
、+5・・・モータ制御回路。 寥 図 専3図
FIG. 1 is an explanatory diagram of a specific example of an observation system for observing an optical fiber from two directions at right angles in the optical fiber fusion splicing method of the present invention. FIG. 2 is an explanatory diagram of a conventional observation system for observing an optical fiber from two directions at right angles. FIG. 3 is an explanatory diagram of an embodiment of a drive system of a microscope according to the present invention. FIG. 4 is an explanatory diagram of an example of the drive system of the microscope in FIG. 2. 1... Optical fiber, 2... Mirror 3... Light source,
4...Microscope! ! ...Ball screw, +2...Image processing section, +3...Belt, +4...Pulse motor, +5...Motor control circuit. Hozu special illustration 3

Claims (1)

【特許請求の範囲】[Claims] (1)顕微鏡を用いて光ファイバを直角2方向から観察
し、その像を画像処理して光ファイバの軸ずれ計測、端
面位置決めを行なった後、放電加熱により融着を行なう
光ファイバの融着接続方法において、上記直角2方向の
それぞれの最適焦点位置を結ぶ直線上を1つの顕微鏡を
移動させて光ファイバの直角2方向からの観察を行なう
ことを特徴とする光ファイバの融着接続方法。
(1) Optical fiber fusion is performed by observing the optical fiber from two perpendicular directions using a microscope, processing the image to measure the optical fiber's axis misalignment, and positioning the end face, and then performing fusion by electrical discharge heating. A method for fusion splicing optical fibers, characterized in that the optical fiber is observed from two directions at right angles by moving one microscope on a straight line connecting the optimum focus positions in each of the two right angle directions.
JP8858189A 1989-04-07 1989-04-07 Fusion splicing method for optical fiber Pending JPH02266306A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8858189A JPH02266306A (en) 1989-04-07 1989-04-07 Fusion splicing method for optical fiber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8858189A JPH02266306A (en) 1989-04-07 1989-04-07 Fusion splicing method for optical fiber

Publications (1)

Publication Number Publication Date
JPH02266306A true JPH02266306A (en) 1990-10-31

Family

ID=13946810

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8858189A Pending JPH02266306A (en) 1989-04-07 1989-04-07 Fusion splicing method for optical fiber

Country Status (1)

Country Link
JP (1) JPH02266306A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04323510A (en) * 1991-04-23 1992-11-12 Fujikura Ltd Optical fiber curvature measurement method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258207A (en) * 1985-09-09 1987-03-13 Nippon Telegr & Teleph Corp <Ntt> Observing device for optical fiber core
JPS6446623A (en) * 1987-08-14 1989-02-21 Fujikura Ltd Connection part inspecting method for multicore optical fiber

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6258207A (en) * 1985-09-09 1987-03-13 Nippon Telegr & Teleph Corp <Ntt> Observing device for optical fiber core
JPS6446623A (en) * 1987-08-14 1989-02-21 Fujikura Ltd Connection part inspecting method for multicore optical fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04323510A (en) * 1991-04-23 1992-11-12 Fujikura Ltd Optical fiber curvature measurement method

Similar Documents

Publication Publication Date Title
EP0406413B1 (en) Scanning type tunnel microscope
JP3500850B2 (en) Method and apparatus for observing butted portion of ribbon-type optical fiber
JP3067331B2 (en) microscope
US20130201488A1 (en) Three-dimensional shape measuring apparatus
US9360650B2 (en) Laser alignment device with a movable mirror, laser-target alignment sensor with movable mirrors and laser alignment method
CN101303224A (en) beam-target coupled sensor
JP2000275027A (en) Slit confocal microscope and surface profile measuring device using it
WO2011102663A2 (en) Optical system for forming square optical path and method thereof
US6084672A (en) Device for optically measuring an object using a laser interferometer
JPS58181005A (en) Automatically focusing and measuring apparatus and method
JP2001091821A5 (en)
CN114019626A (en) Micro-lens coupling optical path system, micro-lens coupling device and micro-lens coupling method
JPH11173821A (en) Optical inspecting device
JP6264797B2 (en) Optical transmission line alignment method, alignment apparatus, and alignment program
JP2023170184A (en) The camera module
CN103170731A (en) Laser lens with passive seam tracking
CN111417835B (en) Imaging incident angle tracker
JP3366728B2 (en) Optical fiber observation equipment
JP2612887B2 (en) Observation method of optical fiber end face condition
JP3490287B2 (en) Optical fiber alignment device
JP2529526Y2 (en) Alignment device for optical components
Chen et al. Micromanipulation robot for automatic fiber alignment
JP3327041B2 (en) Atomic force microscope
JP2524275B2 (en) Optical component-optical fiber alignment method and optical component
JP2568385B2 (en) Scanning probe microscope