JPS6489829A - Timing system for digital optical transmission - Google Patents
Timing system for digital optical transmissionInfo
- Publication number
- JPS6489829A JPS6489829A JP62246719A JP24671987A JPS6489829A JP S6489829 A JPS6489829 A JP S6489829A JP 62246719 A JP62246719 A JP 62246719A JP 24671987 A JP24671987 A JP 24671987A JP S6489829 A JPS6489829 A JP S6489829A
- Authority
- JP
- Japan
- Prior art keywords
- signal light
- light
- polarized
- clock
- pulse code
- 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
- Synchronisation In Digital Transmission Systems (AREA)
- Optical Communication System (AREA)
Abstract
PURPOSE:To simplify the constitution at the reception side by sending a transmission signal light modulated by a pulse code series to be sent and a timing signal light modulated by a clock signal as respective independent polarized wave components of a constant polarization fiber. CONSTITUTION:An optical transmitter 12 outputs an intensified modulation light based on a pulse code series inputted from an input terminal 11 and an optical transmitter 14 outputs an intensified modulation light (timing signal light) based on the clock signal from a clock source 13. A semiconductor laser being a component of the optical transmitters 12, 14 radiates substantially a linearly polarized light, then the polarized wave lights are synthesized by a polarized beam splitter 16. In such a case, since the transmission signal light and the clock signal light have orthogonal polarized components, the polarized wave component is sent independently by the constant polarization fiber 17. Thus, no clock extraction at the reception side extracting the timing signal from a sent pulse code series is required, then the circuit constitution is simplified.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62246719A JPS6489829A (en) | 1987-09-30 | 1987-09-30 | Timing system for digital optical transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62246719A JPS6489829A (en) | 1987-09-30 | 1987-09-30 | Timing system for digital optical transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6489829A true JPS6489829A (en) | 1989-04-05 |
Family
ID=17152631
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62246719A Pending JPS6489829A (en) | 1987-09-30 | 1987-09-30 | Timing system for digital optical transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6489829A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04117036A (en) * | 1990-08-31 | 1992-04-17 | Nec Corp | Optical transmitter |
| US6509985B1 (en) | 1998-08-07 | 2003-01-21 | Nec Corporation | Parallel transmission method and system |
| CN110542276A (en) * | 2018-05-29 | 2019-12-06 | 博西华电器（江苏）有限公司 | refrigerator and control method thereof |
-
1987
- 1987-09-30 JP JP62246719A patent/JPS6489829A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04117036A (en) * | 1990-08-31 | 1992-04-17 | Nec Corp | Optical transmitter |
| US6509985B1 (en) | 1998-08-07 | 2003-01-21 | Nec Corporation | Parallel transmission method and system |
| CN110542276A (en) * | 2018-05-29 | 2019-12-06 | 博西华电器（江苏）有限公司 | refrigerator and control method thereof |
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