Device for multiplexing/demultiplexing and method therewith
US6571031B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 2, 2000 |
| Grant date | May 27, 2003 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/2813
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A device for multiplexing a wavelength multiplexed optical signal (25) comprising at least a first and a second optical wavelength channel centered around respective predetermined wavelengths (&lgr;1, &lgr;2), comprising an MMI coupler (2), at least of the size 2×2, for inputting the wavelength multiplexed optical signal at an input (3) and for splitting the multiplexed signal into components and imaging these at several ports (13-21), Michelson waveguides (27-31) for receiving and transporting the components imaged at the port of the MMI coupler, reflecting means (33-41) for reflecting the components received and transported in the Michelson waveguides back to the ports of the MMI coupler, wherein the MMI coupler is arranged for inputting the reflecting components, and the respective lengths of the Michelson waveguides are adapted so that said MMI coupler combines the components in a manner such that the first and the second optical wavelength channels are imaged substantially at separated outputs (5-11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.