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An MLSE Receiver for Electronic Dispersion Compensation of OC-192 Fiber Links

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6 Author(s)
Hyeon-Min Bae ; Intersymbol Commun. Inc, Champaign, IL ; Ashbrook, J.B. ; Jinki Park ; Shanbhag, N.R.
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A maximum-likelihood sequence estimation (MLSE) receiver is fabricated to combat dispersion/intersymbol interference (chromatic and polarization mode), noise (optical and electrical), and nonlinearities (e.g., fiber, receiver photodiode, or laser) in OC-192 metro and long-haul links. The MLSE receiver includes a variable gain amplifier with 40-dB gain range and 7.5-GHz 3-dB bandwidth, a 12.5-Gb/s 4-bit analog-to-digital converter, a dispersion-tolerant phase-locked loop, a 1:8 demultiplexer, and a digital equalizer implementing the MLSE algorithm. The MLSE receiver achieves more than 50% reach extension at signal-to-noise levels of interest as compared to conventional clock data recovery systems

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:41 ,  Issue: 11 )