Fabry Perot/fiber Bragg grating multi-wavelength reference
US6327036A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 5, 2000 |
| Grant date | Dec 4, 2001 |
| Priority date | — |
| Expiry date | Sep 5, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3854
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A multi-wavelength reference for use in identifying and measuring wavelengths of radiation from an optical device. The invention provides an interferometer to generate a comb of accurately spaced peaks spanning a selected wavelength range combined with a fiber Bragg grating (FBG) of known Bragg wavelength to generate a peak or notch of known wavelength for use in identifying or marking a peak of the comb. The combination provides an accurate multi-wavelength reference useful in particular with high resolution wavelength scanners, such as tunable FFPI. The invention further provides systems for controlling, and/or compensating for, relative shifts in the wavelengths of the interferometer and the FBG as a function of changing temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.