Compact wavelength multiplexer/demultiplexer and method for making the same
US7212343B1 · kind B1 · utility
19Cited by
7References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2003 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | Nov 4, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29365
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Designs of multiplexing/demultiplexing modules configured for N channels are disclosed. One of the features in the designs is to provide at least one concave mirror for compenstating filter tilting errors. The concave mirrors is placed where an incident traveling distance of a light beam is substantially similar or equal to the reflected traveling distance of the beam such that the filter tilting errors successively introduced over a number of optical filters can be successively reduced, compensated or removed over a subsequent number of optical filters as the light beams travels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.