Observation of prolonged power transients in a reconfigurable multiwavelength network and their suppression by gain-clamping of optical amplifiers

Author

Yoo, S.J.B. ; Xin, Wei ; Garratt, L.D. ; Young, J.C. ; Ellinas, G. ; Chiao, J.C. ; Rauch, Mike ; Baran, Jane E. ; Meagher, Brian ; LeBlanc, Herve ; Chang, Gee-Kung

Author_Institution

Bellcore, Red Bank, NJ, USA

Volume

10

Issue

11

fYear

1998

Firstpage

1659

Lastpage

1661

Abstract

We observe channel power transients lasting several seconds in a reconfigurable multiwavelength network, which includes cascaded automatic channel power equalizers and fiber amplifiers in 1018- and 1898-km fiber links. Such prolonged power transients occur upon reconfiguration of the network due to coupling between the feedback control loops of the channel power equalizers and their interaction with the delay through the fiber link. Experiments performed under numerous conditions support this hypothesis. In particular, we experimentally demonstrate that gain-clamping of the amplifiers in the network significantly suppresses the power transients.

Keywords

delays; equalisers; fibre lasers; laser feedback; optical fibre networks; transients; wavelength division multiplexing; 1018 km; 1898 km; cascaded automatic channel power equalizers; channel power equalizers; channel power transients; feedback control loops; fiber amplifiers; gain-clamping; optical amplifiers; prolonged power transients; reconfigurable multiwavelength network; All-optical networks; Equalizers; Feedback loop; Intelligent networks; Optical amplifiers; Optical feedback; Optical fiber amplifiers; Optical fiber networks; Power amplifiers; Stimulated emission;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.726782

Filename

726782