Optical wavelength demultiplexer
US6198864A · kind A · utility
112Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1998 |
| Grant date | Mar 6, 2001 |
| Priority date | — |
| Expiry date | Nov 24, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4214
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A demultiplexer includes a unitary optically transparent structure that utilizes focusing relay mirrors to relay a multi-wavelength beam of light among a series of wavelength-specific interference filters, with each filter separating out a specific wavelength component from the multi-wavelength beam. The relay mirrors are focusing mirrors, so that the demultiplexer can be operated with a non-collimated light beam in a manner that controls the potentially large angle of divergence of non-collimated light, while taking advantage of the small beam diameter in order to create a demultiplexer with greater miniaturization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.