Open AccessMicrowave generation in an electro-absorption modulator integrated with a DFB laser subject to optical injection
Author(s) -
Ning Hua Zhu,
Hong Guang Zhang,
Man Jiang,
Hong Zhu,
Jian Hong Ke,
Yu Liu,
Xin Wang,
Hai Qing Yuan,
Liang Xie,
Wei Wang
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.022114
Subject(s) - materials science , laser , microwave , distributed feedback laser , optoelectronics , optics , electro absorption modulator , optical modulator , signal (programming language) , electro optic modulator , modulation (music) , biasing , absorption (acoustics) , semiconductor laser theory , wavelength , voltage , phase modulation , quantum dot laser , semiconductor , telecommunications , physics , computer science , phase noise , quantum mechanics , acoustics , composite material , programming language
This paper presents a new technique to generate microwave signal using an electro-absorption modulator (EAM) integrated with a distributed feedback (DFB) laser subject to optical injection. Experiments show that the frequency of the generated microwave can be tuned by changing the wavelength of the external laser or adjusting the bias voltage of the EAM. The frequency response of the EAM is studied and found to be unsmooth due to packaging parasitic effects and four-wave mixing effect occurring in the active layer of the DFB laser. It is also demonstrated that an EA modulator integrated in between two DFB lasers can be used instead of the EML under optical injection. This integrated chip can be used to realize a monolithically integrated tunable microwave source.
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