Method and apparatus for detecting multiple optical wave lengths
US7356224B2 · kind B2 · utility
49Cited by
16References
25Claims
0Family size
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Key dates
| Filing date | Jun 27, 2003 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Oct 15, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2203/585
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Optical gratings that perform a number of functions at various wavelengths are formed by various methods that preserve spectral information within a wavelength band, the functions including: coupling radiation from one waveguide to another, controllable gratings that operate on different wavelengths in response to external control signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.