Open AccessPattern dependence in high-speed Q-modulated distributed feedback laser
Author(s) -
Hongli Zhu,
Yimin Xia,
JianJun He
Publication year - 2015
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.011887
Subject(s) - jitter , extinction ratio , optics , laser , modulation (music) , distributed feedback laser , phase modulation , intensity modulation , signal (programming language) , materials science , computer science , physics , phase noise , telecommunications , acoustics , wavelength , programming language
We investigate the pattern dependence in high speed Q-modulated distributed feedback laser based on its complete physical structure and material properties. The structure parameters of the gain section as well as the modulation and phase sections are all taken into account in the simulations based on an integrated traveling wave model. Using this model, we show that an example Q-modulated DFB laser can achieve an extinction ratio of 6.8dB with a jitter of 4.7ps and a peak intensity fluctuation of less than 15% for 40Gbps RZ modulation signal. The simulation method is proved very useful for the complex laser structure design and high speed performance optimization, as well as for providing physical insight of the operation mechanism.