Digitally tunable optical filters using arrayed-waveguide grating (AWG) multiplexers and optical switches

Author

Ishida, Osamu ; Takahashi, Hiroshi ; Inoue, Yasuyuki

Author_Institution

NTT Optical Network Syst. Labs., Kanagawa, Japan

Volume

15

Issue

2

fYear

1997

fDate

2/1/1997 12:00:00 AM

Firstpage

321

Lastpage

327

Abstract

Two novel configurations for digitally tunable optical filters based on arrayed-waveguide grating (AWG) multiplexers are described in detail with emphasis on the connection of the AWG multiplexer and optical switches. Performance comparisons show that conventional configurations are disadvantaged by the switch size required and loss imbalance among the optical frequency-division-multiplexed (FDM) channels; the proposed configurations require only O(√(N)) switch elements to select one of N FDM channels, and the loss imbalance is lower by up to 75% in decibel

Keywords

electro-optical filters; electro-optical switches; frequency division multiplexing; integrated optics; optical communication equipment; optical fibre losses; optical losses; optical waveguides; wavelength division multiplexing; AWG multiplexer; FDM; arrayed-waveguide grating multiplexers; digitally tunable optical filters; loss imbalance; optical frequency-division-multiplexed channels; optical switches; switch size; Arrayed waveguide gratings; Frequency division multiplexing; Optical arrays; Optical feedback; Optical fiber filters; Optical filters; Optical interferometry; Optical switches; Optical waveguides; Tunable circuits and devices;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.554384

Filename

554384