JPS5641188B2 - - Google Patents
Info
- Publication number
- JPS5641188B2 JPS5641188B2 JP3994876A JP3994876A JPS5641188B2 JP S5641188 B2 JPS5641188 B2 JP S5641188B2 JP 3994876 A JP3994876 A JP 3994876A JP 3994876 A JP3994876 A JP 3994876A JP S5641188 B2 JPS5641188 B2 JP S5641188B2
- Authority
- JP
- Japan
- 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.)
- Expired
Links
Landscapes
- Semiconductor Lasers (AREA)
- Led Devices (AREA)
- Optical Communication System (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3994876A JPS52123185A (en) | 1976-04-09 | 1976-04-09 | Optical communication supervisory system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3994876A JPS52123185A (en) | 1976-04-09 | 1976-04-09 | Optical communication supervisory system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS52123185A JPS52123185A (en) | 1977-10-17 |
| JPS5641188B2 true JPS5641188B2 (en) | 1981-09-26 |
Family
ID=12567171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3994876A Granted JPS52123185A (en) | 1976-04-09 | 1976-04-09 | Optical communication supervisory system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS52123185A (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS626755Y2 (en) * | 1977-06-28 | 1987-02-17 | ||
| JPS5471503A (en) * | 1977-11-18 | 1979-06-08 | Fujitsu Ltd | Monitor system of photo reception level |
| JPS54152404A (en) * | 1978-05-22 | 1979-11-30 | Yagi Antenna Co Ltd | Infrared-ray transmitter |
| JPS55150289A (en) * | 1979-05-12 | 1980-11-22 | Fujitsu Ltd | Laser drive circuit |
| JPS56153786A (en) * | 1980-04-30 | 1981-11-27 | Sumitomo Electric Ind Ltd | Monitoring circuit for bias current of laser-diode |
| JPS5821886A (en) * | 1981-07-31 | 1983-02-08 | Nec Corp | Discriminating circuit to judge deterioration of laser diode |
| JPS60108056U (en) * | 1983-12-23 | 1985-07-23 | 横河電機株式会社 | APC circuit of light emitting element |
| JPH0728587Y2 (en) * | 1984-03-02 | 1995-06-28 | オリンパス光学工業株式会社 | Optical pickup device |
| JP2685174B2 (en) * | 1986-10-13 | 1997-12-03 | 松下電器産業株式会社 | Laser recording device |
| JPS6397061A (en) * | 1986-10-13 | 1988-04-27 | Matsushita Electric Ind Co Ltd | Laser recorder |
| EP3944433B1 (en) * | 2019-04-24 | 2024-06-12 | Mitsubishi Electric Corporation | Deterioration diagnosis device and deterioration diagnosis method of optical transceiver |
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1976
- 1976-04-09 JP JP3994876A patent/JPS52123185A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS52123185A (en) | 1977-10-17 |