Measurement for waveform and chirping of optical pulses generated by directly modulated DFB laser and external EA modulator

被引：1
|
作者：
Yang, H [1 ]
Liu, XS [1 ]
Du, J [1 ]
Sun, W [1 ]
Li, DH [1 ]
Yi, MB [1 ]
Du, GT [1 ]
机构：
[1] Jilin Univ Reg, State Key Lab Integrated Optoelect, Changchun 130023, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2005年 / 37卷 / 01期
关键词：
fringe-resolved SHG; chirping; DFB laser diode; electro-absorption modulator;
D O I：
10.1016/j.optlastec.2004.02.013
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Optical pulse generated by directly modulated distributed feedback (DFB) laser and external electro-absorption modulator (EAM) in virtue of the method of fringe-resolved second-harmonic generation correlation was measured. Without the pulse's shape being assumed, through the method of iterative reconstruct interference signal, the waveform and phase of the pulse was reconstructed. The full-wave at half-maximum (FWHM) of the pulse generated by EAM under the microwave modulation of 2.5 GHz is 30.8 ps, whose shape is close to that of the sech(2)-type pulse. The FWHM of the pulse generated by DFB laser is 18.3 ps, whose shape is close to that of the Lorenz-type pulse. And the original chirping of EAM is smaller than that of DFB laser. (C) 2004 Published by Elsevier Ltd.
引用
收藏
页码：55 / 60
页数：6
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