NDLI: Space-wavelength trade-off in the design of nonblocking directional-coupler-based networks under crosstalk constraint

Content Provider	IEEE Xplore Digital Library
Author	Mehdi Vaez, M. Chin-Tau Lea
Copyright Year	1998
Description	Author affiliation: AT&T Bell Labs., Middletown, NJ, USA (Mehdi Vaez, M.)
Abstract	Directional couplers are electro-optical switching devices that are capable of switching multiple wavelength signals. Once the state of a coupler is set up, optical signals can pass through the coupler with a rate of tera bits per second. A directional coupler-based photonic switching system however, suffers from the intrinsic crosstalk problem. This shortcoming has been the most limiting factor in building a large switching network of this kind. It has been shown that by using more hardware (couplers) we can reduce the number of crosstalk-generating couplers along the path of a connection in a Banyan-type switching system. We explore the wavelength approach to achieve this task. We show that if there are two wavelengths available, the number of couplers suffering the first-order crosstalk can be reduced to zero while the total number of couplers will remain the same as a network without any crosstalk constraint.
Starting Page	1526
Ending Page	1530
File Size	563950
Page Count	5
File Format	PDF
ISBN	0780347889
DOI	10.1109/ICC.1998.683079
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1998-06-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Intelligent networks Directional couplers Optical crosstalk Optical waveguides Optical coupling Optical sensors Switching systems Coupling circuits Stimulated emission Semiconductor optical amplifiers
Content Type	Text
Resource Type	Article

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