JPS573445A - Signal multiplex optical transmitter - Google Patents
Signal multiplex optical transmitterInfo
- Publication number
- JPS573445A JPS573445A JP7747080A JP7747080A JPS573445A JP S573445 A JPS573445 A JP S573445A JP 7747080 A JP7747080 A JP 7747080A JP 7747080 A JP7747080 A JP 7747080A JP S573445 A JPS573445 A JP S573445A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- frequency
- subsignal
- circuit
- light
- 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
Links
- 230000003287 optical effect Effects 0.000 title abstract 2
- 239000013307 optical fiber Substances 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000015572 biosynthetic process Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 238000003786 synthesis reaction Methods 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To decrease the subsignal component, by converting a signal having an integer times the frequency of a clock signal and subjected to phase modulation with a subsignal to be transmitted, into light with another light source for that of a main signal, and transmitting it with the main signal light after synthesis. CONSTITUTION:An output signal of a phase comparison circuit 17 in which a clock signal at a terminal 15 and an output signal of a frequency-dividing circuit 16 are phase-compared, is added at an addition circuit 19 with a subsignal to be transmitted from a terminal 18. This signal is fed to a voltage variable frequency oscillating circuit 21 to control the oscillating frequency and converts it into a signal having an integer times frequency of the clock signal and subjected to phase modulation with the subsignal, by the frequency division in an arbitrary integer at the frequency dividng circuit 16. This signal is converted into light at a light source 23 via a driving circuit 22 and transmitted to a photocoupler 25 via an optical fiber 24 and outputted to an external fiber line 26 after being synthesized with a main signal light transmitted through an optical fiber 14. Thus, the transmission of optical subsignal can be made without interference from the main signal and with less reduction in signal component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7747080A JPS573445A (en) | 1980-06-09 | 1980-06-09 | Signal multiplex optical transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7747080A JPS573445A (en) | 1980-06-09 | 1980-06-09 | Signal multiplex optical transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS573445A true JPS573445A (en) | 1982-01-08 |
Family
ID=13634865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7747080A Pending JPS573445A (en) | 1980-06-09 | 1980-06-09 | Signal multiplex optical transmitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS573445A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280144A (en) * | 1988-09-16 | 1990-03-20 | Asahi Seiki Kogyo Kk | Wire loop forming method |
| KR100743112B1 (en) | 2006-10-20 | 2007-07-27 | 김정현 | Night urination detector |
-
1980
- 1980-06-09 JP JP7747080A patent/JPS573445A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0280144A (en) * | 1988-09-16 | 1990-03-20 | Asahi Seiki Kogyo Kk | Wire loop forming method |
| KR100743112B1 (en) | 2006-10-20 | 2007-07-27 | 김정현 | Night urination detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO1997008840A3 (en) | Common transmit module for a programmable digital radio | |
| EP1271763A3 (en) | High frequency apparatus | |
| KR920000186A (en) | Two-way light or infrared transmission of electrical signals without wave guides | |
| JPS57150258A (en) | Sub-signal transmission system | |
| JPS573445A (en) | Signal multiplex optical transmitter | |
| ES8604377A1 (en) | Optical transmitter distortion compensation circuit | |
| JPS56152346A (en) | Optical transmission and receiving device | |
| JPS57199347A (en) | Frequency multiplex optical transmitter | |
| RU2007005C1 (en) | Device for transmission and reception of relay protection signals over electric power lines | |
| JPS54138306A (en) | Transmission unit of optical multiplex modulation | |
| SU1525913A1 (en) | Device for fine tuning of frequency of fm-generator | |
| SU566371A1 (en) | Delta-modulation communication system | |
| JPS5613850A (en) | Secondary signal piling transmission system | |
| JPS54152901A (en) | Light communication unit | |
| JPS5471905A (en) | Optical communication unit | |
| JPS57104335A (en) | Transmission system for residual side band | |
| KR970031504A (en) | Optical transmission device that extends the optical transmission distance | |
| JPS56112137A (en) | Wave length multistar type network | |
| JPS5573152A (en) | Optical transmitter | |
| JPH01175329A (en) | optical transmitter | |
| JPS54107612A (en) | Automatic equalizing system for digital delivery line | |
| JPS551721A (en) | Multiplex radio unit | |
| JPS56157146A (en) | Optical transmission system | |
| JPS5624835A (en) | Multiplex transmission system for optical fiber | |
| JPS6482834A (en) | Optical communication system |