Optical wave-guide wavelength multiplexer and demultiplexer
US6249364A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 19, 1999 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Feb 19, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical wave-guide wavelength multiplexing device comprising: PA1 an array of input single-mode wave-guides designed for carrying light beams at different wavelengths (.lambda.1, .lambda.2, . . . , .lambda.n), PA1 an output single-mode wave-guide designed for carrying the whole set of such light beams, PA1 a dispersing system receiving light beams from the input wave-guides in an end plane and generating superimposed light beams designed for the output wave-guide in an output plane, PA1 a collimating lens which produces collimated beams from the input wave-guides whose respective central axes are converging to be superposed on the rear reflector of the dispersing system, PA1 a refracting prism located between the dispersing system and the collimating lens. A polarization splitter can also be placed between the output single-mode wave-guides array and the grating. The demultiplexer comprises the same elements, whereas the roles of the input/output wave-guides and planes are reversed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.