Experimental demonstration of dynamic high-speed equalization of three WDM channels using acoustooptic modulators and a wavelength demultiplexer

Author

Jin-Xing Cai ; Kai-Ming Feng ; Xiaopeng Chen ; Willner, A.E. ; Smith, D.A. ; Chau-Han Lee ; Yung-Jui Chen

Author_Institution

Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA

Volume

9

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

678

Lastpage

680

Abstract

We have experimentally demonstrated the dynamic equalization of three WDM channels by using a polarization-independent passive wavelength demultiplexer, a parallel array of AO modulators, and a dynamic feedback control circuit. This module actively equalizes the power differential from >10 dB to within 1 dB of three channels spanning a range of 8 nm. This module can respond faster than 0.1 μs. After 1000 km of transmission within a recirculating fiber loop, three channels remain equalized by the dynamic module. This module can accommodate small or large channel spacings commensurate with the different channels allowable into the wavelength demultiplexer.

Keywords

acousto-optical modulation; demultiplexing; equalisers; optical feedback; optical fibre networks; wavelength division multiplexing; 0.1 mus; 1000 km; WDM; WDM channels; acoustooptic modulators; channels spanning; dynamic equalization; dynamic high-speed equalization; large channel spacings; parallel acousto optical modulator array; polarization-independent passive wavelength demultiplexer; power differential; recirculating fiber loop; three WDM channels; wavelength demultiplexer; Channel spacing; Erbium-doped fiber amplifier; Feedback circuits; Feedback control; Optical devices; Optical fiber communication; Optical fiber devices; Optical fiber polarization; Robustness; Wavelength division multiplexing;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.588203

Filename

588203