Title

Digitally controlled fault-tolerant multiwavelength programmable fiber-optic attenuator using a two-dimensional digital micromirror device

Authors

Authors

N. A. Riza;S. Sumriddetchkajorn

Comments

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Abbreviated Journal Title

Opt. Lett.

Keywords

GAIN EQUALIZATION; AMPLIFIERS; Optics

Abstract

A digitally controlled multiwavelength variable fiber-optic attenuator using a two-dimensional digital micromirror device (DMD) is introduced. The results from an experimental four-wavelength (i.e., 1546.92, 1548.52, 1550.12, and 1551.72 nm) proof-of-concept attenuator indicate a 26-dB dynamic range and 11-bit resolution. The measured attenuator average coherent optical cross talk per wavelength channel is -38 dB, limited by the additive noise resulting from the nonideal isolation of the optical circulator and the attenuator module. The average optical loss for our experimental attenuator is 15 dB and is limited mainly by the visible-mode DMD that is used as a 1550-nm infrared window device. Our theoretical estimate of a <8-dB loss optimized attenuator can be used for equalization in multiwavelength fiber-optic communications with as many as 108 wavelengths. (C) 1999 Optical Society of America.

Journal Title

Optics Letters

Volume

24

Issue/Number

5

Publication Date

1-1-1999

Document Type

Article

Language

English

First Page

282

Last Page

284

WOS Identifier

WOS:000078973600004

ISSN

0146-9592

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