Semiconductor laser device of variable wavelength type
US4885753A · kind A · utility
36Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1988 |
| Grant date | Dec 5, 1989 |
| Priority date | — |
| Expiry date | Oct 7, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A tunable semiconductor laser device has an active region for generating light, and a feedback region which is optically coupled with the active region and includes a perturbation portion having non-uniform perturbation period. In this semiconductor laser device, the light intensity distribution in the feedback region is changed to vary the degree of coupling of light propagated in the feedback region with a desired part of the perturbation portion, thereby varying the wavelength of emitted light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.