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Proceedings Paper

Sixteen-channel acousto-fiber-optic barrel shifter
Author(s): Charles H. Chalfant; Robert F. Kalman; Joseph W. Goodman
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Paper Abstract

We have designed, built, and tested a sixteen channel fiber optic switching system based on the use of a bulk acousto-optic (AO) Bragg cell. The operational configuration known as a 'barrel shift' was developed specifically for fiber optic data acquisition system upgrades for the Collider Detector at Fermilab (CDF) in Batavia, Illinois. The prototype switch was delivered to CDF and is planned for tests targeting CDF upgrades in the next few years. Its use is intended for switching systems that specifically route time division multiplexed data channels. The acousto-optic barrel shifter (AOBS) simultaneously switches 16 parallel input optical fibers through a sequence of 16 separate states; after a complete cycle, all input channels have been routed to all output fibers for a total of 256 separate connections. The performance of the switch was demonstrated by switching transition times of 1 microsecond(s) ec, bit-error-rates (BERs) less than 10-12 at 1.2 Gbits/sec, operation over a range of optical wavelengths from 1285 nm to 1320 nm, and low dependence on optical polarization. The optics package was contained in a portable enclosure 12 inches wide, 6 inches in height, and 16 inches in length.

Paper Details

Date Published: 30 June 1995
PDF: 10 pages
Proc. SPIE 2481, Photonic Device Engineering for Dual-Use Applications, (30 June 1995); doi: 10.1117/12.212704
Show Author Affiliations
Charles H. Chalfant, Optivision, Inc. (United States)
Robert F. Kalman, Optivision, Inc. (United States)
Joseph W. Goodman, Optivision, Inc. (United States)

Published in SPIE Proceedings Vol. 2481:
Photonic Device Engineering for Dual-Use Applications
Andrew R. Pirich, Editor(s)

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