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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 33, Iss. 8 — Mar. 10, 1994
  • pp: 1601–1618

Five-stage free-space optical switching network with field-effect transistor self-electro-optic-effect-device smart-pixel arrays

Frederick B. McCormick, Tom J. Cloonan, Anthony L. Lentine, Jose M. Sasian, Rick L. Morrison, Martin G. Beckman, Sonya L. Walker, Mike J. Wojcik, Steve J. Hinterlong, Randy J. Crisci, Robert A. Novotny, and H. Scott Hinton  »View Author Affiliations


Applied Optics, Vol. 33, Issue 8, pp. 1601-1618 (1994)
http://dx.doi.org/10.1364/AO.33.001601


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Abstract

The design, construction, and operational testing of a five-stage, fully interconnected 32 × 16 switching fabric by the use of smart-pixel (2, 1, 1) switching nodes are described. The arrays of switching nodes use monolithically integrated GaAs field-effect transistors, multiple-quantum-well p-i-n detectors, and self-electro-optic-device modulators. Each switching node incorporates 25 field-effect transistors and 17 diodes to realize two differential optical receivers, the 2 × 1 node switching logic, a single-bit node p-i-n control memory, and one differential optical transmitter. The five stages of node arrays are interconnected to form a two-dimensional banyan network by the use of Fourier-plane computer-generated holograms. System input and output are made by two-dimensional fiber-bundle matrices, and the system optical hardware design incorporates frequency-stabilized lasers, pupil-division beam combination, and a hybrid micro-macro lens for fiber-bundle imaging. Optomechanical packaging of the system utilizes modular kinematic component positioning and active thermal control to enable simple rapid assembly. Two preliminary operational experiments are completed. In the first experiment, five stages are operated at 50 Mbits/s with 15 active inputs and outputs. The second experiment attempts to operate two stages of second-generation node arrays at 155 Mbits/s, with eight of the 15 active nodes functioning correctly along the straight switch-routing paths.

© 1994 Optical Society of America

History
Original Manuscript: June 9, 1993
Revised Manuscript: September 20, 1993
Published: March 10, 1994

Citation
Frederick B. McCormick, Tom J. Cloonan, Anthony L. Lentine, Jose M. Sasian, Rick L. Morrison, Martin G. Beckman, Sonya L. Walker, Mike J. Wojcik, Steve J. Hinterlong, Randy J. Crisci, Robert A. Novotny, and H. Scott Hinton, "Five-stage free-space optical switching network with field-effect transistor self-electro-optic-effect-device smart-pixel arrays," Appl. Opt. 33, 1601-1618 (1994)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-33-8-1601

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