Wavelength stabilized planar waveguide optical devices incorporating a dispersive element
US6339662B1 · kind B1 · utility
52Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Jan 15, 2002 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B2006/12195
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A planar waveguide optical device whose wavelengths are stabilized by temperature, has an input channel, a series of output data channels, and a dispersive element, such as a diffraction grating or phase array, for directing component wavelengths of incoming light into the respective output data channels. A pair of monitor channels have a separation less than, and a width greater than, the data channels. A differential feedback arrangement controls the temperature of the demultiplexer according a differential signal received from the pair of monitor channels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.