Lightwave circuit device
US7110639B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 1, 2005 |
| Grant date | Sep 19, 2006 |
| Priority date | — |
| Expiry date | Jun 1, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a lightwave circuit device, an optical multiplexer, and an optical demultiplexer with which light can be multiplexed or demultiplexed even when a plurality of lightwaves of varying wavelength are inputted. The lightwave circuit device includes first to third Mach-Zehnder interferometers. The first to third Mach-Zehnder interferometers each have first to third ports, a first optical coupler, first and second optical waveguides, a second optical coupler, and a first heater provided along at least one of the first and the second optical waveguides. The second port of the first Mach-Zehnder interferometer and the first port of the second Mach-Zehnder interferometer are optically coupled, and the third port of the first Mach-Zehnder interferometer and the first port of the third Mach-Zehnder interferometer are optically coupled.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.