A Silicon Photonic Integrated Packaged Coherent Receiver Front-End For Soft-Decision Decoding

Author

Sakib, Muhammad N. ; Hai, Mohammed Shafiqul ; Liboiron-Ladouceur, O.

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada

Volume

32

Issue

24

fYear

2014

fDate

Dec.15, 15 2014

Firstpage

4753

Lastpage

4758

Abstract

In this paper, a packaged integrated coherent receiver and optical front-end for soft decision based on 25 Gbaud/s quadrature phase-shift keying (QPSK) is investigated for on-chip applications. The front-end consists of a 90° hybrid, balanced photodetectors, and unbalanced couplers monolithically integrated in a CMOS compatible silicon-on-insulator technology. The silicon photonic device is packaged onto a ceramic substrate with RF and dc connectors. The proposed front-end is an example of integration of system on chip. The integrated solution is able to provide 6.2 dB performance improvements over uncoded system without error correction. The front-end outperforms optical system with hard-decision forward error correction by 2.2 dB at the BER of 10^-7.

Keywords

CMOS integrated circuits; decoding; error statistics; integrated optics; integrated optoelectronics; optical fibre communication; optical fibre couplers; optical receivers; photodetectors; quadrature phase shift keying; silicon; silicon-on-insulator; system-on-chip; BER; CMOS compatible silicon-on-insulator technology; QPSK; RF; ceramic substrate; dc connectors; gain 6.2 dB; hard-decision forward error correction; hybrid balanced photodetectors; integrated solution; monolithic integration; on-chip applications; optical front-end; optical system; packaged integrated coherent receiver; performance improvements; quadrature phase-shift keying; silicon photonic device; silicon photonic integrated packaged coherent receiver front-end; soft-decision decoding; system on chip integration; unbalanced couplers; uncoded system; Optical amplifiers; Optical coupling; Optical fibers; Optical polarization; Optical receivers; Data communication; Error correction coding; Optical fiber communication; Si-photonics; error correction coding; optical fiber communication;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2014.2364987

Filename

6937063