Use of waveguide grating couplers in an optical mux/demux system
US7194166B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 26, 2005 |
| Grant date | Mar 20, 2007 |
| Priority date | — |
| Expiry date | Aug 26, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/4214
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A group of waveguide grating couplers is disposed on a semiconductor substrate. The grating couplers are all within a spot illuminated on the substrate by a light from an optical fiber. The light propagating in the fiber is wavelength division multiplexed (WDM) and consists of several channels. Within the group of grating couplers, at least one grating coupler is designed to be tuned to each of the channels. The group of grating couplers demultiplexes the channels propagating in the fiber. A group of waveguide grating couplers can also be used to multiplex several channels of light into an optical fiber. Single mode and multimode fiber can be used to carry the multiplexed channels of light in an optical multiplexing and demultiplexing system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.