Optical add-drop multiplexer for optical communication networks
US5812291A · kind A · utility
22Cited by
7References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 1996 |
| Grant date | Sep 22, 1998 |
| Priority date | — |
| Expiry date | Feb 22, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/29395
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The optical add/drop multiplexer has a pair of nominally identical interference filters, one of which carries out the function of extracting a carrier from a wavelength division multiplexed stream and the other the insertion function. The filters are arranged in parallel planes and are secured to opposite faces of a transparent plate so that the stream exits the device after having undergone reflection by both filters. The plate is mounted on a support which can be rotated in either direction to vary the tuning wavelength of the filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.