Wavelength selectable DFB laser based on Non-uniform multiple quantum wells - Details

Author：

Xie, Hongyun (Xie, Hongyun.) | Huo, Wenjuan (Huo, Wenjuan.) | Jiang, Zhiyun (Jiang, Zhiyun.) | Lu, Zhiyi (Lu, Zhiyi.) | Zhang, Wanrong (Zhang, Wanrong.)

Indexed by：

EI Scopus PKU CSCD

Abstract：

A　monolithic　integrated　chip　with　DFB　lasers　in　serial　is　presented,　which　provides　two　selectable　wavelengths　for　coarse　wave　divide　multiplexing　(CWDM)　channel　at　suitable　working　condition.　Non-uniform　multiple　quantum　wells　is　designed　and　grown　to　widen　active　material　gain　spectrum.　Weak　gain　coupled　is　added　into　pure　refractive　index　grating　of　each　DFB　laser　to　promote　dynamic　single　mode.　The　monolithic　chip　is　fabricated　with　common　process　of　DFB　laser,　which　has　the　features　of　simple　process,　low　cost　and　high　repetition.　Test　results　show　that　the　chip　can　output　at　two　wavelengths　of　1.51　m　and　1.53　m.　Output　powers　are　both　higher　than　6　mW　and　single　mode　suppression　ratios　both　achieve　40　dB.

Keyword：

Quantum well lasers Distributed feedback lasers Monolithic integrated circuits Lasers Semiconductor quantum wells Refractive index

Author Community：

[ 1 ] [Xie, Hongyun]College of Electronic Information and Controlling Engineering, Beijing University of Technology, Beijing 100124, China
[ 2 ] [Huo, Wenjuan]College of Electronic Information and Controlling Engineering, Beijing University of Technology, Beijing 100124, China
[ 3 ] [Jiang, Zhiyun]College of Electronic Information and Controlling Engineering, Beijing University of Technology, Beijing 100124, China
[ 4 ] [Lu, Zhiyi]College of Electronic Information and Controlling Engineering, Beijing University of Technology, Beijing 100124, China
[ 5 ] [Zhang, Wanrong]College of Electronic Information and Controlling Engineering, Beijing University of Technology, Beijing 100124, China