Multimode semiconductor laser module, wavelength detector, wavelength stabilizer, and Raman amplifier
US7027473B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 1, 2002 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Oct 1, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/02325
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides a multimode semiconductor laser module. The module comprises a multimode laser element 34, an optical filter 54, a light-receiving element 52 and a temperature regulator 24. Multimode light from the laser element 34 is transmitted through the filter 54 and then detected by the light-receiving element 52. The output of the light-receiving element 52 changes according to the degree of overlap between the oscillation wavelength spectrum of the laser element 34 and the transmission wavelength region of the filter 54. The temperature regulator 24 modifies the oscillation wavelength region toward the desired region in response to the output of the light-receiving element 52. As a result, the oscillation wavelength region is stabilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.