UV-trimmed fused tapered couplers
US6408119B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 28, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jan 28, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02076
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A method of trimming fused-tapered couplers, with or without in-fiber Bragg gratings, to form multiplexers, demultiplexers or combinations of both, by either or both of (1) increasing the phase differential between the symmetric and asymmetric supermodes by irradiating one or both ends of the coupler with UV radiation confined transversely to between the cores of the fibers, and (2) decreasing the phase differential between the modes by irradiating a portion of one or both ends of the coupler with two beams of UV radiation, each confined transversely to include a corresponding core and excluding a significant fraction of the space between the cores.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.