Spot-Size-Converter Integrated Laser Diode with Waveguide Width Abruptly Expanded Structure

摘要

We propose a device called the Waveguide width abruptly Expanded Spot-Size-Converter integrated Laser Diode (WEX-SSC-LD) that has been designed to improve las- ing characteristics by achieving a steep photoluminescence wave- length change along the cavity. The waveguide parameter was optimized by a three-dimensional beam propagation method to reduce mode conversion and absorption losses.