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Optical Engineering

Demonstration of a photonic space switch utilizing acousto-optic elements
Author(s): William E. Stephens; Paul C. Huang; Thomas C. Banwell; Leslie A. Reith; Steven S. Cheng
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Paper Abstract

A multicasting photonic space switch is proposed and demonstrated utilizing acousto-optic Bragg cells in a free-space active splitting, passive combining optical architecture. A 4 x 4 switch is demonstrated at optical wavelength ? = 0.83?m using Te02 Bragg cells. Fiber-to-fiber insertion loss of 15 dB, crosstalk of —20 dB, extinction ratio of >30 dB, and polarization sensitivity of 0.8 dB has been measured. Feasibility of switch operation at 1.3 ?m is also shown for TeO2. Although this design was fabricated as a 4x4, expansion to 14x 14 can be accommodated with modifications to the optical element design. Calculations indicate that a maximum switch size of 20 x 20 and an insertion loss of 11 dB is possible, with crosstalk and extinction ratios greater than 30 dB.

Paper Details

Date Published: 1 March 1990
PDF: 8 pages
Opt. Eng. 29(3) doi: 10.1117/12.55590
Published in: Optical Engineering Volume 29, Issue 3
Show Author Affiliations
William E. Stephens
Paul C. Huang, Bell Communications Research (United States)
Thomas C. Banwell, Bell Communications Research (United States)
Leslie A. Reith, Bell Communications Research (United States)
Steven S. Cheng, Industrial Technology Research Institute (Taiwan)

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