Optical element using one-dimensional photonic crystal and spectroscopic device using the same
US7068903B2 · kind B2 · utility
2Cited by
5References
21Claims
0Family size
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Key dates
| Filing date | May 16, 2003 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Nov 7, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/12007
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical element, composed of an one-dimensional photonic crystal of a triangular prism shape and a multilayer film and a phase modulation unit are used together, with the phase modulation unit adjacent or abutting to a light input end surface of the optical element. Input light is phase-modulated by the phase modulation unit in the same period and direction as those of photonic crystal so that only specific high-order band light can be propagated through the optical element. When this optical element is formed in an optical waveguide, a small-size spectroscopic device having high resolving power can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.