Optical multiplexer/demultiplexer
US7130503B2 · kind B2 · utility
3Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 11, 2004 |
| Grant date | Oct 31, 2006 |
| Priority date | — |
| Expiry date | May 11, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/1215
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Light of wavelengths λ2 and λ3 (λ2<λ3) is propagated in a first core. The light emitted form the first core is divided at a filter. That is, the light of the wavelength λ2 transmits through the filter and is made incident onto a third core while the light of the wavelength λ3 is reflected from a filter and is made incident onto a second core. The second core has a sectional area which works in a single mode for the light of the wavelength λ3 and works in a multiple mode for the light of the wavelength λ2. It is therefore possible to prevent noise or stray light in an optical multiplexer/demultiplexer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.