An 11.1 Gbps Analog PRML Receiver for Electronic Dispersion Compensation of Fiber Optic Communications

Author

Elahmadi, Salam ; Bussmann, Matthias ; Baranauskas, Dalius ; Zelenin, Denis ; Edwards, Jomo ; Tran, Kelvin ; Linder, Lloyd F. ; Gill, Christopher ; Tan, Harry ; Ng, Devin ; El-Ahmadi, Siraj

Author_Institution

Menara Networks Inc., Dallas, TX, USA

Volume

45

Issue

7

fYear

2010

fDate

7/1/2010 12:00:00 AM

Firstpage

1330

Lastpage

1344

Abstract

A dispersion tolerant receiver for fiber-optic links, in 0.18 μm SiGe BiCMOS, implements a Class-2 partial response maximum likelihood (PRML) equalization entirely in the analog domain. Post-FEC error free operation is achieved with data received from over 400 Km of uncompensated single mode fiber (SMF). The 4.5 W ASIC operates at up to 11.1 Gb/s and includes a variable gain amplifier (VGA) with automatic gain control (AGC), a 1.5-3.5 GHz programmable continuous-time filter (CTF), a 5-tap sampled-time finite-impulse response (FIR) filter, a decision directed timing recovery, and a 4-state analog Viterbi detector implementation. The receiver is compliant with XFI jitter specifications for Telecom applications (SONET OC-192 and G.709 “OTU-2”).

Keywords

BiCMOS integrated circuits; Ge-Si alloys; equalisers; forward error correction; integrated optoelectronics; optical fibre dispersion; optical links; optical receivers; semiconductor materials; 4-state analog Viterbi detector; ASIC; BiCMOS; FEC; FIR filter; SiGe; XFI jitter specifications; analog PRML receiver; automatic gain control; bit rate 11.1 Gbit/s; class-2 partial response maximum likelihood equalization; decision directed timing recovery; dispersion tolerant receiver; distance 400 km; electronic dispersion compensation; fiber optic communications; fiber-optic links; frequency 1.5 GHz to 3.5 GHz; power 4.5 W; programmable continuous-time filter; sampled-time finite-impulse response filter; size 0.18 mum; uncompensated single mode fiber; variable gain amplifier; Application specific integrated circuits; BiCMOS integrated circuits; Error-free operation; Finite impulse response filter; Gain; Germanium silicon alloys; Maximum likelihood detection; Optical fiber communication; Optical receivers; Silicon germanium; Continuous-time filter; FIR; OTN; VGA; Viterbi; WDM; electronic dispersion compensation; fiber optic; maximum likelihood detection; partial response; timing recovery;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2010.2049460

Filename

5492309