Analyzing tunable optical filters using tunable source
US7692793B2 · kind B2 · utility
1Cited by
1References
15Claims
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Key dates
| Filing date | Nov 29, 2007 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Sep 13, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/055
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The specification describes an optical wavelength monitor/analyzer that uses a cost effective wavelength reference source. The wavelength reference source is a nominally fixed wavelength laser with inherent tunability over a very limited wavelength range, i.e. a few nanometers. Tuning is effected by changing the temperature of the laser. The limited range is useful for making multiple wavelength measurements in the context of analyzing wavelength drift in tunable optical filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.