Nonlinear distortion suppression in directly modulated DFB lasers by sidemode optical injection

Author

Seo, J.-H. ; Seo, Y.-K. ; Choi, W.-Y.

Author_Institution

Dept. of Electr. & Electron. Eng., Yonsei Univ., Seoul, South Korea

Volume

1

fYear

2001

fDate

20-24 May 2001

Firstpage

555

Abstract

We demonstrate a new method of suppressing nonlinear distortions in directly modulated DFB lasers. In our scheme, external laser light is injected into the sidemode of the DFB laser. Using this scheme, we achieved significant reduction in nonlinear distortions such as the second harmonic distortion (SHD), second order intermodulation distortion (IMD2), and third order intermodulation distortion (IMD3). In addition, we enhanced the external light detuning range.

Keywords

distributed feedback lasers; harmonic distortion; intermodulation distortion; optical modulation; optical transmitters; semiconductor lasers; SHD; directly modulated DFB lasers; external light detuning range enhancement; nonlinear distortion suppression; second harmonic distortion; second order IMD; second order intermodulation distortion; sidemode optical injection; third order IMD; third order intermodulation distortion; Fiber nonlinear optics; Injection-locked oscillators; Intermodulation distortion; Laser noise; Nonlinear distortion; Nonlinear optics; Optical distortion; Optical modulation; Optical wavelength conversion; Spectral analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest, 2001 IEEE MTT-S International

Conference_Location

Phoenix, AZ, USA

ISSN

0149-645X

Print_ISBN

0-7803-6538-0

Type

conf

DOI

10.1109/MWSYM.2001.966954

Filename

966954