摘要
A wideband wavelength-tunable 4×5 distributed feedback(DFB)semiconductor laser array based on the reconstructionequivalent-chirp(REC)technique using a simple tuning scheme is demonstrated.It consists of 20 DFB lasers with 4×5matrix interleaving distributions,two-level cascaded Y-branch optical combiners,and one active semiconductor opticalamplifier(SOA),all in-series integrated on one chip.Unlike the traditional thermal-electric cooler(TEC)-based wavelength-tuning scheme,the tunable 4×5 REC-DFB laser array achieves a faster and broader continuous wavelength-tuningrange using TaN thin-film heaters integrated on the AlN submount.By changing the injection current of the TaN resistorfrom 0 to 190 mA,the proposed tunable laser achieves a wavelength-tuning range of∼2.5 nm per channel and a total tuningof over 50 nm.This study opens up new avenues for realizing cost-effective and wide-tuning-range semiconductor lasers.
作者
戴攀
陈卓
孙振兴
葛涵天
戴吉
陆骏
王峰
肖如磊
童话
窦蓉蓉
陈向飞
Pan Dai;Zhuo Chen;Zhenxing Sun;Hantian Ge;Ji Dai;Jun Lu;Feng Wang;Rulei Xiao;Hua Tong;Rongrong Dou;Xiangfei Chen(Key Laboratory of Intelligent Optical Sensing and Manipulation of the Ministry of Education,National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Institute of Optical Communication Engineering,and Nanjing University-Tongding Joint Laboratory for Large-Scale Photonic Integrated Circuits,Nanjing University,Nanjing 210023,China;School of Electronic and Optical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China;School of Electronic Science and Engineering,Nanjing University,Nanjing 210023,China)
基金
supported by the Chinese National Key Basic Research Special Fund(Nos.2017YFA0206401,2018YFA0704402,2018YFB2201801,and 2018YFE0201200)
National Key Research and Development Program of China(No.2020YFB2205800)
National Natural Science Foundation of China(Nos.61975075,61975076,and 62004094)
Natural Science Foundation of Jiangsu Province(No.BK20200334)
Jiangsu Science and Technology Project(No.BE2017003-2).
