Widely Tunable Two-Section Directly Modulated DBR Lasers for TWDM-PON System  

作　　者：周代兵 梁松 韩良顺 赵玲娟 王圩 

机构地区：[1]Key laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083

出　　处：《Chinese Physics Letters》2017年第3期38-40,共3页中国物理快报（英文版）

基　　金：Supported by the National Key Project under Grant No 2016YFB0402301;the National High Technology Research and Development Program of China under Grant No 2013AA014502;the National Natural Science Foundation of China under Grant Nos 61635010,61320106013,61474112,61321063 and 61274071

摘　　要：Wavelength tunable and directly modulated distributed Bragg reflector （DBR） lasers with butt-joint technology are designed, fabricated and characterized. The DBR laser consists of a gain section and a DBR section. To increase the electrical isolation between the gain section and the DBR section, parts of a p-doped material in the isolation region are etched off selectively. Over 2kΩ isolation resistance is realized ultimately without the need of ion implantation, which simplifies the fabrication process. The laser exhibits high speed modulation with a large tunable range. The 3dB direct modulation bandwidth of the device is over 8GHz in a 12nm tunable range. This widely tunable DBR laser with the simple structure is promising as a colorless light source for the next-generation time and wavelength division multiplexed passive optical network （TWDM-PON） systems.Wavelength tunable and directly modulated distributed Bragg reflector （DBR） lasers with butt-joint technology are designed, fabricated and characterized. The DBR laser consists of a gain section and a DBR section. To increase the electrical isolation between the gain section and the DBR section, parts of a p-doped material in the isolation region are etched off selectively. Over 2kΩ isolation resistance is realized ultimately without the need of ion implantation, which simplifies the fabrication process. The laser exhibits high speed modulation with a large tunable range. The 3dB direct modulation bandwidth of the device is over 8GHz in a 12nm tunable range. This widely tunable DBR laser with the simple structure is promising as a colorless light source for the next-generation time and wavelength division multiplexed passive optical network （TWDM-PON） systems.

关 键 词：DBR PON Widely Tunable Two-Section Directly Modulated DBR Lasers for TWDM-PON System 

分 类 号：TN248[电子电信—物理电子学]