Fabrication of widely tunable ridge waveguide DBR lasers for WDM-PON  

作　　者：韩良顺 梁松 张灿 余力强 赵玲娟 朱洪亮 王宝军 吉晨 王圩 

机构地区：[1]Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors,Chinese Academy of Science

出　　处：《Chinese Optics Letters》2014年第9期41-44,共4页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(Nos.61274071,61006044,and 61090392);the National"863"Project of China(Nos.2013AA014502 and 2011AA010303);the National"973"Program of China(No.2012CB934202)

摘　　要：We report the fabrication of widely tunable ridge waveguide distributed Bragg reflector （DBR） lasers with InGaAsP butt-joint as grating material. The shape of the butt-joint interface is found to have significant effect on the properties of the lasers. It is shown that irregular mode jumps during wavelength tuning can be avoided by a V-shaped butt-joint interface. From the fabricated device, 23 channels with 0.8 nm spacing and greater than 35 dB side mode suppression ratios are obtained. The different tuning characteristics of the ridge waveguide and the previously reported buried ridge stripe DBR lasers are discussed. Combined with the wide tuning range and the simple structure, the ridge waveguide DBR lasers are promising for use in wavelength division multiplexing passive optical networks （WDM-PONs）.We report the fabrication of widely tunable ridge waveguide distributed Bragg reflector （DBR） lasers with InGaAsP butt-joint as grating material. The shape of the butt-joint interface is found to have significant effect on the properties of the lasers. It is shown that irregular mode jumps during wavelength tuning can be avoided by a V-shaped butt-joint interface. From the fabricated device, 23 channels with 0.8 nm spacing and greater than 35 dB side mode suppression ratios are obtained. The different tuning characteristics of the ridge waveguide and the previously reported buried ridge stripe DBR lasers are discussed. Combined with the wide tuning range and the simple structure, the ridge waveguide DBR lasers are promising for use in wavelength division multiplexing passive optical networks （WDM-PONs）.

关 键 词：Butt welding DBR lasers FABRICATION Optical waveguides Passive optical networks WAVEGUIDES Wavelength division multiplexing 

分 类 号：TN248[电子电信—物理电子学]