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Chin. Opt. Lett.
 Home  List of Issues    Issue 09 , Vol. 16 , 2018    10.3788/COL201816.091401


Transmission of 20 Gb/s PAM-4 signal over 20 km optical fiber using a directly modulated tunable DBR laser
Daibing Zhou, Dan Lu, Song Liang, Lingjuan Zhao, and Wei Wang
Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, [Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices], Beijing 100083, China

Chin. Opt. Lett., 2018, 16(09): pp.091401

DOI:10.3788/COL201816.091401
Topic:Lasers and laser optics
Keywords(OCIS Code): 140.5960  250.5300  140.3600  060.4510  

Abstract
We report 20 Gb/s transmission of four-level pulse amplitude modulation (PAM) signal using a directly modulated tunable distributed Bragg reflector (DBR) laser. Transmission distance over 20 km was achieved without using optical amplifiers and optical dispersion compensation modules. A wavelength tuning range of 11.5 nm and a 3 dB bandwidth greater than 10 GHz over the entire wavelength tuning range were obtained.

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Received:2018/6/11
Accepted:2018/7/18
Posted online:2018/8/28

Get Citation: Daibing Zhou, Dan Lu, Song Liang, Lingjuan Zhao, and Wei Wang, "Transmission of 20 Gb/s PAM-4 signal over 20 km optical fiber using a directly modulated tunable DBR laser," Chin. Opt. Lett. 16(09), 091401(2018)

Note: The work was supported by the National Key Research and Development Program of China (Nos. 2016YFB0402301 and 2017YFF0206103) and the National Natural Science Foundation of China (Nos. 61320106013, 61635010, 61474112, 61574137, and 61504170). The authors thank Prof. Yan Li and Dr. Honghang Zhou from Beijing University Posts and Communications for their help in BER measurement.



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