Wavelength tunable laser of small size
US7158547B2 · kind B2 · utility
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4References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 2004 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Aug 18, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/34
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A wavelength tunable laser device includes: a pair of reflection mirrors; a semiconductor element disposed between the pair of reflection mirrors, the semiconductor element integrating a region for providing an optical gain, a region having a wavelength tunable filter function and a phase control region; and an optical filter disposed between the semiconductor element and one of the pair of reflection mirrors, the optical filter having periodical transmission wavelengths. A wavelength tunable laser device is provided which is easy to be controlled and can be made compact.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.