Optical device incorporating a tilted bragg grating
US7245795B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 2005 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Nov 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02085
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention relates to an optical waveguide device for monitoring a characteristics of light, e.g. a wavelength. The device incorporates a waveguide, such as an optical fiber, with an embedded tilted Bragg grating operating in a regime of wavelength detuning. The grating is designed to disperse light azimuthally in two or more different directions about the fiber axis, said directions changing with wavelength. A photodetector array is provided for detecting the azimuthal distribution of light. A processor coupled to the photodetector array determines wavelength information from the detected azimuthal distribution of the out-coupled light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.