Sixteen-channel acousto-fiber-optic barrel shifter

Charles H. Chalfant; Robert F. Kalman; Joseph W. Goodman

doi:10.1117/12.212704

30 June 1995 Sixteen-channel acousto-fiber-optic barrel shifter

Charles H. Chalfant, Robert F. Kalman, Joseph W. Goodman

Proceedings Volume 2481, Photonic Device Engineering for Dual-Use Applications; (1995) https://doi.org/10.1117/12.212704
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

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.

Citation Download Citation

Charles H. Chalfant, Robert F. Kalman, and Joseph W. Goodman "Sixteen-channel acousto-fiber-optic barrel shifter", Proc. SPIE 2481, Photonic Device Engineering for Dual-Use Applications, (30 June 1995); https://doi.org/10.1117/12.212704

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KEYWORDS

Switches

Bragg cells

Acousto-optics

Receivers

Adaptive optics

Channel projecting optics

Diffraction

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