MOPA laser source with wavelength control
US9077144B2 · kind B2 · utility
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10References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2013 |
| Grant date | Jul 7, 2015 |
| Priority date | — |
| Expiry date | Sep 30, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/4031
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention provides a wavelength-controlled pump MOPA laser and a method of operation thereof. A monolithic semiconductor MOPA laser chip has a DFB-laser based MO (master oscillator) and PA (power amplifier) sections formed in a same monolithic waveguide, and separate MO and PA electrodes for individual control of current injection into the MO and PA sections. The laser wavelength is defined by the DFB grating and is kept fixed by suitably controlling the MO current to compensate for a thermal crosstalk from the PA section, or tuned by suitably changing the MO current or direct heating of the DFB region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.