Tunable optical add/drop device
US7262904B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2003 |
| Grant date | Aug 28, 2007 |
| Priority date | — |
| Expiry date | Feb 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B26/007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Improved designs of optical devices for processing optical signals with one or more specified wavelengths are disclosed. According to embodiment, a filter mirror assembly appears an “L” shape and provides a filtering function as well as a reflecting function. The filter mirror assembly is so mounted that a rotation thereof will not alter the optical path the beam positions of signals resulted from a rotation of the filter mirror assembly. To cancel or minimize a lateral shift introduced to a light beam going through an optical filter, an optical compensator is introduced and rotates oppositely whenever the optical filter rotates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.