JPS55105453A - Optical wavelength multiple repeating system - Google Patents
Optical wavelength multiple repeating systemInfo
- Publication number
- JPS55105453A JPS55105453A JP1297479A JP1297479A JPS55105453A JP S55105453 A JPS55105453 A JP S55105453A JP 1297479 A JP1297479 A JP 1297479A JP 1297479 A JP1297479 A JP 1297479A JP S55105453 A JPS55105453 A JP S55105453A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- light emitting
- repeater
- emitting elements
- ratio
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J14/00—Optical multiplex systems
- H04J14/02—Wavelength-division multiplex systems
Abstract
PURPOSE:To realize an optical wavelength multiple repeating system in which the connection switch is carried out within the repeater, the lowering of the SN ratio is prevented for the specified channel, and the long-distance transmission is possible. CONSTITUTION:The electric signals sent from terminals 1-4 are converted into optical signals lambda1-lambdan featuring different wavelengths via light emitting element driving circuits 17-20 plus light emitting elements 25-28 and then transmitted to repeater 55 via a piece of fiber 53 after multiplication through optical compounding unit 33. The electric signals demodulated through optical branching unit 35 within repeater 35, light emitting elements 37-40 and demodulators 45-48 each are connected in switching to light emitting element driving circuits 21-24 so that the lowering of the SN ratio received at optical fibers 53 and 54 may be uniformed through all channels. Such electric signals are then transmitted again to fiber 54 via light emitting elements 29-32 plus optical compounding unit 34. Accordingly, the electric signal of one channel is transmitted i the form of the optical signal featuring the different wavelengths before and after repeater 55. As a result, the SN ratio can be made uniform over all channels.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1297479A JPS55105453A (en) | 1979-02-07 | 1979-02-07 | Optical wavelength multiple repeating system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1297479A JPS55105453A (en) | 1979-02-07 | 1979-02-07 | Optical wavelength multiple repeating system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55105453A true JPS55105453A (en) | 1980-08-13 |
Family
ID=11820193
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1297479A Pending JPS55105453A (en) | 1979-02-07 | 1979-02-07 | Optical wavelength multiple repeating system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55105453A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173537A (en) * | 1985-01-25 | 1986-08-05 | ウエスチングハウス エレクトリック コ−ポレ−ション | Optical fiber circuit network |
US4609442A (en) * | 1985-06-24 | 1986-09-02 | The Standard Oil Company | Electrolysis of halide-containing solutions with amorphous metal alloys |
US4696731A (en) * | 1986-12-16 | 1987-09-29 | The Standard Oil Company | Amorphous metal-based composite oxygen anodes |
US4702813A (en) * | 1986-12-16 | 1987-10-27 | The Standard Oil Company | Multi-layered amorphous metal-based oxygen anodes |
US4746584A (en) * | 1985-06-24 | 1988-05-24 | The Standard Oil Company | Novel amorphous metal alloys as electrodes for hydrogen formation and oxidation |
US4781803A (en) * | 1985-02-26 | 1988-11-01 | The Standard Oil Company | Electrolytic processes employing platinum based amorphous metal alloy oxygen anodes |
US5483372A (en) * | 1994-11-29 | 1996-01-09 | International Business Machines Corporation | Single and multichannel transmission over long distances using repeated level-crossing remodulation |
US7046930B2 (en) | 2001-06-13 | 2006-05-16 | Fujitsu Limited | Optical communication system |
-
1979
- 1979-02-07 JP JP1297479A patent/JPS55105453A/en active Pending
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61173537A (en) * | 1985-01-25 | 1986-08-05 | ウエスチングハウス エレクトリック コ−ポレ−ション | Optical fiber circuit network |
US4781803A (en) * | 1985-02-26 | 1988-11-01 | The Standard Oil Company | Electrolytic processes employing platinum based amorphous metal alloy oxygen anodes |
US4609442A (en) * | 1985-06-24 | 1986-09-02 | The Standard Oil Company | Electrolysis of halide-containing solutions with amorphous metal alloys |
US4746584A (en) * | 1985-06-24 | 1988-05-24 | The Standard Oil Company | Novel amorphous metal alloys as electrodes for hydrogen formation and oxidation |
US4696731A (en) * | 1986-12-16 | 1987-09-29 | The Standard Oil Company | Amorphous metal-based composite oxygen anodes |
US4702813A (en) * | 1986-12-16 | 1987-10-27 | The Standard Oil Company | Multi-layered amorphous metal-based oxygen anodes |
US5483372A (en) * | 1994-11-29 | 1996-01-09 | International Business Machines Corporation | Single and multichannel transmission over long distances using repeated level-crossing remodulation |
US7046930B2 (en) | 2001-06-13 | 2006-05-16 | Fujitsu Limited | Optical communication system |
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