Optical waveguide circuit, and method for compensating the light transmission wavelength
US6377723B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 2000 |
| Grant date | Apr 23, 2002 |
| Priority date | — |
| Expiry date | Sep 13, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/1203
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A plate-shaped member (8a) whose linear expansion coefficient is larger than that of a substrate (1) is provided on the rear side of the substrate (1) of an arrayed waveguide diffraction grating (11) which divides, by a diffraction effect of an array waveguide (40), lights of a plurality of wavelengths from those having a plurality of wavelengths different from each other, which are inputted from an optical input waveguide (2), and outputs these lights from the respective optical output waveguides (6). A light transmission feature of the respective output lights includes a light transmission feature for causing lights to be transmitted, centering around the center wavelengths of light transmission, which are different from each other, wherein the center wavelengths of light transmission shifts to the long wavelength side by a temperature rise.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.