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

页码：55 / 60

页数：6

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