Simplified WDM fused fiber coupler design
US5150439A · kind A · utility
5Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | May 22, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2835
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A two-channel optical fiber fused coupler comprising two optical fibers, each with a core and cladding, fused together at a narrow tapered waist. The first channel is at a wavelength of .lambda..sub.1 and the second channel is at a wavelength of .lambda..sub.2 where .lambda..sub.2 is longer than .lambda..sub.1. The coupler is fabricated to have a characteristic wavelength .lambda..sub.0 such that for wavelengths .lambda..sub.2 longer than .lambda..sub.0 coupling occurs and for wavelenghts .lambda..sub.1 shorter that .lambda..sub.0 the light at .lambda..sub.1 is core guided throughout the coupler and thus does not couple across.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.