Differential phase shift keyed demodulator system
US6834146B2 · kind B2 · utility
4Cited by
1References
17Claims
0Family size
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Key dates
| Filing date | Jan 3, 2002 |
| Grant date | Dec 21, 2004 |
| Priority date | — |
| Expiry date | Nov 30, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/215
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A differential phase shift keyed demodulator system uses a Michelson interferometer configuration in which polarization maintenance is accomplished by using a single 50:50 coupler coupled to a first Faraday rotator mirror and a second Faraday rotator mirror through a first fiber and a second fiber, respectively. In this way, system passively eliminates the polarization problem caused by using a Mach-Zehnder interferometer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.