24-GHz Directly Modulated DFB Laser Modules for Analog Applications

A directly-modulated distributed-feedback laser module has been achieved with a ridge-waveguide laser chip in our laboratory. It is packaged in butterfly housing with a K connector, and the bandwidth of the laser module is up to 24 GHz with in-band flatness of ±3 dB. It shows a high linearity with i...

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Bibliographic Details
Published in:IEEE photonics technology letters 2012-03, Vol.24 (5), p.407-409
Main Authors: Xie, Liang, Man, Jiang Wei, Wang, Bao Jun, Liu, Yu, Wang, Xin, Yuan, Hai Qing, Zhao, Ling Juan, Zhu, Hong Liang, Zhu, Ning Hua, Wang, Wei
Format: Article
Language:English
Subjects:
Distributed feedback devices
Distributed-feedback (DFB) laser module
high bandwidth
high linearity
Laser noise
Laser transitions
Linearity
Masers
Measurement by laser beam
packaging
ridge-waveguide
Semiconductor lasers
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Summary:A directly-modulated distributed-feedback laser module has been achieved with a ridge-waveguide laser chip in our laboratory. It is packaged in butterfly housing with a K connector, and the bandwidth of the laser module is up to 24 GHz with in-band flatness of ±3 dB. It shows a high linearity with input 1-dB compression point of higher than 23 dBm and third-order intercept of 32.2 dBm at 24 GHz. Meanwhile, the packaged DFB laser module gives rather low relative intensity noise of less than -150 dB/Hz when the bias current is 75 mA and it can show a great performance in analog optical communication systems.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2011.2179026