Relative intensity noise in high-speed hybrid square-rectangular lasers  

作　　者：FU-LI WANG XIU-WEN MA YONG-ZHEN HUANG YUE-DE YANG JUN-YUAN HAN JIN-LONG XIAO 

机构地区：[1]State Key Laboratory on Integrated Optoelectronics, Institute of Semiconductors & Institute of Material Science and Optoelectronic Technology,University of Chinese Academy of Sciences, Chinese Academy of Sciences

出　　处：《Photonics Research》2018年第3期193-197,共5页光子学研究（英文版）

基　　金：National Key R&D Program of China(2016YFB0402304);National Natural Science Foundation of China(NSFC)(61235004,61377105,61527823)

摘　　要：Relative intensity noise(RIN) and high-speed modulation characteristics are investigated for an Al Ga In As/In P hybrid square-rectangular laser(HSRL) with square side length, rectangular length, and width of 15,300, and 2 μm, respectively. Single-mode operation with side-mode suppression larger than 40 dB has been realized for the HSRL over wide variation of the injection currents. In addition, the HSRL exhibits a 3 dB modulation bandwidth of 15.5 GHz, and an RIN nearly approaches standard quantum shot-noise limit 2 hv∕P=-164 dB∕Hz at high bias currents due to the strong mode selection of the square microcavity. With the increase of the DC bias current of the Fabry–Perot section, significantly enhanced modulation bandwidth and decreased RIN are observed.Furthermore, intrinsic parameters such as resonance frequency, damping factor, and modified Schawlow–Townes linewidth are extracted from the noise spectra.Relative intensity noise （RIN） and high-speed modulation characteristics are inv hybrid square-rectangular laser （HSRL） with square side length, estigated for an AIGaInAs/InP rectangular length, and width of 15,300, and 2 ltm, respectively. Single-mode operation with side-mode suppression larger than 40 dB has been realized for the HSRL over wide variation of the injection currents. In addition, the HSRL exhibits a 3 dB modulation bandwidth of 15.5 GHz, and an RIN nearly approaches standard quantum shot-noise limit 2hv/P --- -164 dB/Hz at high bias currents due to the strong mode selection of the square microcavity. With the increase of the DC bias current of the Fabry-Perot section, significantly enhanced modulation bandwidth and decreased RIN are observed. Furthermore, intrinsic parameters such as resonance frequency, damping factor, and modified Schawlow- Townes linewidth are extracted from the noise spectra.

关 键 词：RIN Relative intensity noise in high-speed hybrid square-rectangular lasers ISQ 

分 类 号：TN[电子电信]