Opto-electronic oscillator having a positive feedback with an open loop gain greater than one
US5723856A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1995 |
| Grant date | Mar 3, 1998 |
| Priority date | — |
| Expiry date | Aug 1, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/56
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electro-optical oscillator includes an electro-optical modulator having an electrical input port that accepts an electrical control signal and an optical output port. The electro-optical modulator is operable to generate at the optical output port an optical signal that oscillates at a frequency related to the electrical control signal. The oscillator also includes a photodetector that converts a portion of the optical signal from the optical output port of the electro-optical modulator to an electrical signal and provides the electrical signal to the electrical input port of the electro-optical modulator as the electrical control signal. An open loop gain of a feedback loop including the optical output port, the photodetector and the electrical input port is greater than one.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.