Optical multiplexer/demultiplexer, optical integrated circuit and light transceiver using the same
US7065269B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2004 |
| Grant date | Jun 20, 2006 |
| Priority date | — |
| Expiry date | Jul 9, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12116
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical multiplexer/demultiplexer having a high isolation characteristic, a small polarization dependency and capable of being reduced in size is disclosed. An end portion of a core and an end portion of a core are arranged in opposed relation to each other with a thin-film filter interposed therebetween. The end portion of the core far from the filter and the end portion of the core far from the filter are arranged in substantially parallel to each other. The core is arranged in such a manner as to branch from the filter-side end portion of the core and to be optically coupled with the core. The end portion of the core near to the filter and the end portion of the core near to the filter are curved. The end portion of the core near to the filter is curved in a manner protruded toward the core. The end portion of each of the core and the core far from the filter reaches an end of an optical waveguide, and the end portion of the core far from the filter reaches a side of the optical waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.