Dynamic birefringence of the linear optical amplifier and application in optical regeneration

Author

Zhao, Mingshan ; De Merlier, Jan ; Morthier, Geert ; Baets, Roel G.

Author_Institution

Dept. of Inf. Technol., Ghent Univ. IMEC, Gent, Belgium

Volume

8

Issue

6

fYear

2002

Firstpage

1399

Lastpage

1404

Abstract

Dynamic birefringence of the linear optical amplifier (LOA) is theoretically and experimentally investigated. Significant nonlinear variations of the state of polarization with the input power and bias current of the LOA have been found. Based on this nonlinear change of the state of polarization, an all-optical 2R regenerator is demonstrated. Under static operation, an extinction ratio (ER) improvement of 15 dB has been obtained for an input ER of 5 dB. With a degraded input signal, a receiver sensitivity improvement of over 3 dB at a bit-error rate (BER) of 10^-9 has been found for 2.5 Gb/s. For 10 Gb/s, zero power penalty is observed. Significant improvements of ER for both 2.5 and 10 Gb/s are obtained.

Keywords

birefringence; light polarisation; optical receivers; optical repeaters; semiconductor optical amplifiers; sensitivity; 10 Gbit/s; 2.5 Gbit/s; all-optical 2R regenerator; bias current; bit-error rate; degraded input signal; dynamic birefringence; linear amplification; linear optical amplifier; nonlinear change; nonlinear variations; optical regeneration; receiver sensitivity; semiconductor optical amplifier; state of polarization; zero power penalty; Birefringence; Erbium; Nonlinear optics; Optical amplifiers; Optical polarization; Optical receivers; Optical sensors; Repeaters; Semiconductor optical amplifiers; Stimulated emission;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2002.806694

Filename

1176685