Abstract

We investigated a possibility to use an external micromechanical Fabry-Perot Interferometer, FPI, as a tuning component ina wavelength tunable hybrid laser diode. A silicon micromachined electrostatically tunable Fabry-Perot device was placed ina short distance to the front facet of a laser diode. Together with the front facet of the laser, the FPI formed an extremelyshort external cavity structure. This structure provided a spectrally adjustable optical feedback to the laser diode cavity. Inour experiment a 980-nm single-quantum-well high-power laser diode was used. The FPI device and the front facet of thelaser diode formed a —30-micron external cavity. As a result, a quasi-continuos tuning in a —4-nm wavelength range wasexperimentally observed. Theoretical work was done in modeling the effective feedback from the external cavity. Gaussianbeam approximation and field overlap methods were applied.Keywords: Tunable laser diode, short external cavity, optical feedback, micro-electro-mechanical systems

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.