A 6 Gb/s Transceiver With a Nonlinear Electronic Dispersion Compensator for Directly Modulated Distributed-Feedback Lasers

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This paper presents the design of a 6 Gb/s transceiver with a nonlinear electronic dispersion compensator (EDC) for a directly modulated distributed-feedback (DM-DFB) laser. At the laser output, a DM-DFB laser induces power-dependent frequency chirp, which causes severe chromatic dispersion as well as pattern dependency on the received signal. Such time-varying nature of the dispersion increases the difficulty of compensation using conventional linear methods. The proposed EDC overcomes the chirp-induced dispersion via a nonlinear equalizer at the receiver and a pattern-dependent pre-compensator at the transmitter. The EDC achieves an optical SNR gain of 14.69 dB at a BER of 1 x10(-8) in a 75 km SMF-28 fiber. The test chip is fabricated in a 90 nm CMOS process, and the EDC consumes 68 mW from a 1 V supply at 6 Gb/s.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2015-02
Language
English
Article Type
Article
Citation

IEEE JOURNAL OF SOLID-STATE CIRCUITS, v.50, no.2, pp.503 - 514

ISSN
0018-9200
DOI
10.1109/JSSC.2014.2361354
URI
http://hdl.handle.net/10203/195525
Appears in Collection
EE-Journal Papers(저널논문)
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