Frequency separation stabilization method for optical heterodyne or optical homodyne communication
US5396361A · kind A · utility
30Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1992 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Jun 19, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0687
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system for stabilizing a frequency separation between two coherent light sources includes first and second current sources driving first and second semiconductor laser devices with first and second frequencies, respectively. Light from the semiconductor laser devices is combined in a multiplexer, and a portion the combined light is diverted to an optical-to-electrical transducer. Output current from the transducer is combined with an output of a local oscillator driven at a selected frequency. A combined signal is then filtered, and used to form a control signal of one of the semiconductor laser devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.