Bandwidth efficient modulation over fiber optics

Author

Azadet, Kamran ; Saibi, Fadi

Author_Institution

Dept. of PHY Archit. & IP Dev., Agere Syst., Inc., Allentown, PA, USA

fYear

2005

fDate

30 Oct.-2 Nov. 2005

Abstract

In this paper we study a 40Gb/s electrical transmission scheme used in an optical system based on sub-carrier multiplexing (SCM). The proposed bandwidth efficient modulation reduces the signal bandwidth to 14GHz. This enables implementation in lower cost silicon technology and allows the use of optical components developed for 10Gbps digital transmission. We present digital signal processing techniques and architectures that relax analog specifications and alleviate linear channel impairments. We also present the implementation of a test-chip in standard 0.14μm CMOS process, validating the most challenging circuits.

Keywords

CMOS integrated circuits; digital communication; optical fibres; quadrature amplitude modulation; signal processing; subcarrier multiplexing; 10 Gbit/s; 14 GHz; 40 Gbit/s; CMOS process; bandwidth efficient modulation; digital signal processing; digital transmission; fiber optics; linear channel impairments; multicarrier QAM modulation; subcarrier multiplexing; Bandwidth; CMOS technology; Circuit testing; Costs; Digital signal processing; Optical devices; Optical fibers; Optical modulation; Optical signal processing; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Compound Semiconductor Integrated Circuit Symposium, 2005. CSIC '05. IEEE

Print_ISBN

0-7803-9250-7

Type

conf

DOI

10.1109/CSICS.2005.1531806

Filename

1531806