Optical homodyne DPSK receiver with optical amplifier
US5181136A · kind A · utility
44Cited by
3References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 20, 1990 |
| Grant date | Jan 19, 1993 |
| Priority date | — |
| Expiry date | Sep 20, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/63
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An optical homodyne differential phase shift keying (DPSK) receiver for receiving and demodulating optical input signals, is provided with a power splitter for splitting the input signal into first and second signals, a delay is applied to the second signal, an optical amplifier optically amplifies the delayed second signal, and a balanced noise reduction circuit combines the first signal and the delayed amplified second signal to produce a demodulated output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.