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Optical Engineering

Wavelength division multiplexers/demultiplexers for optical interconnects in massively parallel processing
Author(s): Feng Zhao; Yun Zhang; Jizuo Zou; Zhong Shi; Bipin Bihari; Xuegong Deng; Jie Qiao; Zan Shi; Ray T. Chen
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Paper Abstract

Communication between computing systems is recognized as the main limitation to increase the speed of all-electronic systems beyond levels currently achieved in existing supercomputers. Optical interconnects hold great promise in eliminating current communication bottlenecks because of properties that stem from optics inherent parallelism. Wavelength-division multiplexing (WDM) technology, by which multiple optical channels can be simultaneously transmitted at different wavelengths through a single optical transmission medium, is a useful means of making full use of optics parallelism in an application of interconnects for massive parallel processing. We first briefly review the bottlenecks of electrical interconnects in massively parallel processing. Then we discuss the advantages of optical interconnects and present our approach of optoelectronic interconnects in massively parallel processing by WDM technology. We then review the working principles of wavelength division (de) multiplexers [WD(D)M] for optical interconnects in massively parallel processing and address the optical design issues of WD(D)Ms. Finally, we report experimental data of WD(D)Ms for this application. The devices exhibit low insertion loss, high reliability, and low cost.

Paper Details

Date Published: 1 January 2003
PDF: 8 pages
Opt. Eng. 42(1) doi: 10.1117/1.1526470
Published in: Optical Engineering Volume 42, Issue 1
Show Author Affiliations
Feng Zhao, Univ. of Texas/Austin (United States)
Yun Zhang, Radiant Photonics, Inc. (United States)
Jizuo Zou, Univ. of Texas/Austin (United States)
Zhong Shi, Univ. of Texas/Austin (United States)
Bipin Bihari, Radiant Photonics, Inc. (United States)
Xuegong Deng, Univ. of Texas/Austin (United States)
Jie Qiao, Univ. of Texas/Austin (United States)
Zan Shi, Univ. of Texas/Austin (United States)
Ray T. Chen, Univ. of Texas/Austin (United States)


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