Apparatus and method for stabilizing wavelength tunable laser
US9088130B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2013 |
| Grant date | Jul 21, 2015 |
| Priority date | — |
| Expiry date | Jul 26, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/06216
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An apparatus and method for stabilizing an output of a laser is provided. An optical amplifier oscillates light having a first wavelength band. A filter filters the light having the first wavelength band to output light having a second wavelength band narrower than the first wavelength band. The light having the second wavelength band may correspond to an output of a laser. To stabilize the wavelength center of the output laser, at least a portion of the light having the second wavelength band may be transferred to a fiber Bragg Grating (FBG) through a coupler. By performing feedback of a difference between the signal output from the FBG and a laser modulation signal, an offset corresponding to a lead zirconate titanate (PZT) operating parameter of a Fabry-Perot filter may be controlled to automatically stabilize the wavelength center.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.