22 February 2017 High-speed directly modulated lasers based on high-order slotted surface gratings
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Abstract
Directly modulated semiconductor lasers (DMLs) are important components as sources for short distance communication. In this paper, we present 1.3μm directly modulated lasers with high modulation bandwidth based on high-order slotted surface gratings. Such lasers are regrowth free, thus have the advantages of low cost and high reliability compared to the typical distributed feedback Bragg (DFB) lasers with buried gratings. The two dimensional (2D) scattering matrix method (SMM) combined with the time-domain travelling-wave model (TDTW) is employed for the analysis of the designed laser. By optimization of the grating parameters and cavity length, the slope efficiency about 0.35mW/mA and 3-dB-down frequency bandwidth higher than 41GHz have been achieved for a 250μm long high-order slotted surface grating laser.
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Wei Sun, Wei Sun, Gongyuan Zhao, Gongyuan Zhao, Qiaoyin Lu, Qiaoyin Lu, Wei-Hua Guo, Wei-Hua Guo, } "High-speed directly modulated lasers based on high-order slotted surface gratings", Proc. SPIE 10098, Physics and Simulation of Optoelectronic Devices XXV, 1009810 (22 February 2017); doi: 10.1117/12.2254127; https://doi.org/10.1117/12.2254127
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