Wavelength division multiplexing light transmitting system
US5995254A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 9, 1997 |
| Grant date | Nov 30, 1999 |
| Priority date | — |
| Expiry date | Jan 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2210/078
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wavelength division multiplexing light transmitting system which can monitor its transmission line. In which, one light among the signal lights to be wavelength multiplexed is defined as an optical fiber transmission line monitor light. A transmitter multiplexes and transmits the monitor light with the other signal lights. These lights are attenuated and introduced to the other transmission line at return circuits 12. A receiver branches the returned lights, selects the monitor light and detects a condition of the transmission line by correlation processing. The system extremely improves a SNR and a detection time of the monitor signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.