JPS6451733A - Frequency multiplex optical communication system - Google Patents
Frequency multiplex optical communication systemInfo
- Publication number
- JPS6451733A JPS6451733A JP62208468A JP20846887A JPS6451733A JP S6451733 A JPS6451733 A JP S6451733A JP 62208468 A JP62208468 A JP 62208468A JP 20846887 A JP20846887 A JP 20846887A JP S6451733 A JPS6451733 A JP S6451733A
- Authority
- JP
- Japan
- Prior art keywords
- optical
- frequency
- transmission
- signal light
- optical receiver
- 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
Landscapes
- Optical Communication System (AREA)
Abstract
PURPOSE:To attain long range transmission by providing a network equalizer cancelling the transmission loss varied with a signal optical frequency between an optical transmission line and an optical receiver. CONSTITUTION:Signal lights of plural optical transmitters 1 with different frequency are multiplexed and the result is sent to an optical transmission line 2 and the optical receiver 3 receives the signal light sent via the line 2 with demultiplexing. A network equalizer 4 amplifying or attenuating the signal light to cancel the difference from the transmission loss caused by the change in the transmission loss of the optical transmission line 2 depending on the frequency of the signal light is provided between the optical transmission line 2 and the optical receiver 3. Thus, the signal light level inputted to the optical receiver 3 is made constant independently of the frequency and the limit of the transmission distance extension caused by the deviation from the permissible input range of the optical receiver 3 is excluded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208468A JPS6451733A (en) | 1987-08-21 | 1987-08-21 | Frequency multiplex optical communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62208468A JPS6451733A (en) | 1987-08-21 | 1987-08-21 | Frequency multiplex optical communication system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6451733A true JPS6451733A (en) | 1989-02-28 |
Family
ID=16556681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62208468A Pending JPS6451733A (en) | 1987-08-21 | 1987-08-21 | Frequency multiplex optical communication system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6451733A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309268A (en) * | 1989-03-09 | 1994-05-03 | Canon Kabushiki Kaisha | Optical communication system and optical communication method |
| WO2003103194A1 (en) * | 2002-05-27 | 2003-12-11 | エヌティティエレクトロニクス株式会社 | Bidirectional optical transmission system and optical transmission/reception device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127003A (en) * | 1983-01-12 | 1984-07-21 | Oki Electric Ind Co Ltd | Optical attenuator |
-
1987
- 1987-08-21 JP JP62208468A patent/JPS6451733A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59127003A (en) * | 1983-01-12 | 1984-07-21 | Oki Electric Ind Co Ltd | Optical attenuator |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309268A (en) * | 1989-03-09 | 1994-05-03 | Canon Kabushiki Kaisha | Optical communication system and optical communication method |
| WO2003103194A1 (en) * | 2002-05-27 | 2003-12-11 | エヌティティエレクトロニクス株式会社 | Bidirectional optical transmission system and optical transmission/reception device |
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