Interferometric Noise Characterization and Suppression in Optical CDMA Networks

Author

Deng, Yanhua ; Thompson, Katherine ; Fok, Mable P. ; Prucnal, PAul R.

Author_Institution

Dept. of Electr. Eng., Princeton Univ., Princeton, NJ, USA

Volume

21

Issue

14

fYear

2009

fDate

7/15/2009 12:00:00 AM

Firstpage

981

Lastpage

983

Abstract

A solution for suppressing multiple-access interference and incoherent interferometric noise in 2-D optical code-division multiple access (CDMA) networks is demonstrated using a dispersion-imbalanced loop mirror containing a 15-m heavily GeO₂-doped fiber. From the experimental study of the degradation caused by noise, bit-error-rate (BER) measurements in a two-user system having coherent, partially coherent, and incoherent interferometric noise without the dispersion-imbalanced loop mirror exhibit error floors above BER = 10^-6. Including the dispersion-imbalanced loop mirror before the receiver allows error-free transmission, and reduces the power penalty from the noise by 7 dB. The solution presented increases the receiver sensitivity and accentuates the flexibility of the optical CDMA networks.

Keywords

code division multiple access; error statistics; germanium compounds; interference suppression; light interferometry; mirrors; optical fibre dispersion; optical fibre networks; optical noise; optical receivers; 2D optical code-division multiple access network; BER measurement; JkJk:GeO₂; bit-error-rate; dispersion-imbalanced loop mirror; error-free transmission; incoherent interferometric noise suppression; multiple-access interference suppression; optical CDMA network; optical receiver sensitivity; power penalty; size 15 m; Dispersion-imbalanced loop mirror; heavily $hbox{GeO}_ 2$ -doped nonlinear fiber; interferometric noise; optical code-division multiple access (CDMA);

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2009.2021276

Filename

4912315