Optical multiplexer/demultiplexer
US6418249B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2000 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Jul 6, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12014
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical multiplexer/demultiplexer including an arrayed waveguide grating having a plurality of waveguides and formed at its both end with an input-side slab waveguide and an output-side slab waveguide. A reference input waveguide and correction input waveguides are provided on the input end face of the input-side slab waveguide and a plurality of output waveguides are connected to the output end face of the output-side slab waveguide. The correction input waveguide has an output end face thereof placed apart by a distance from the input end face of the input-side slab waveguide in the lengthwise direction of the slab waveguide and has an acute angle to a plane perpendicular to the optical axis of this waveguide, thus permitting an optical signal to be input at a position apart from a light-incident position for the reference input waveguide by a distance shorter than a waveguide disposition interval, thereby optimally correcting a deviation of the center wavelength of the optical signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.