Optical signal processor
US6810170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2003 |
| Grant date | Oct 26, 2004 |
| Priority date | — |
| Expiry date | Jun 11, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2938
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light output from the distal end of an optical fiber collimator is input to a first diffraction grating formed on a first surface of a transparent member, and diffracted by the first diffraction grating at angles corresponding to wavelengths, and thus wavelength-branched. The light components of the respective wavelengths branched by the first diffraction grating and having propagated through the transparent member, are diffracted by a second diffraction grating formed on a second surface of the transparent member, and output from the transparent member. Each of the light components of the respective wavelengths, which are diffracted by the second diffraction grating and output from the transparent member, is input to the distal end of a corresponding one of optical fiber collimators, focused, and propagates through the optical fiber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.