Abstract
A distributed feedback (DFB) semiconductor laser based on sampled grating with multiple sections, i.e., a straight, a bent, and a tilted waveguide, is proposed to suppress the $0{\rm{th}}$ -order resonance. A sampling structure with nonlinear equivalent chirp pattern is carefully designed to compensate the basic grating chirp introduced by the bent and tilted waveguide. The facet reflection can also be reduced due to the tilted waveguide to avoid the influence of random facet phase. As a result, good single longitudinal mode (SLM) property and high wavelength accuracy in the $ - 1{\rm{st}}$ -order subgrating is achieved, even with a large sampling period. Because the lasing wavelength can be easily adjusted by a sampling period and the fabrication accuracy requirement is relaxed, it will benefit the realization of low-cost DFB laser arrays with a good SLM property and accurate lasing wavelength.
Sign-in/Register to access full text options 
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 callDisclaimer: 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.
