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Proceedings Paper

High-speed signal-routing holographic switching system
Author(s): Serey Thai; David A. Garafalo
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Paper Abstract

A novel concept for a high-speed signal routing holographic switching system for long-haul communications is proposed. A 1 X 2 optical switch is used to split transmitting optical signals so that part of it can be used to control the state of the photonic switches after it had been converted to the electrical domain. The routing controller then matches a given address to a specific frequency that is used to modulate a spatial light modulator (SLM). As a result, a reference beam is produced that in turn is used to write a grating on a transmission volume hologram. Meanwhile the information remains in the optical domain where it travels through the optical delay line and priority sorter. The delay time is equivalent to the total processing time of the holographic grating. The grating is changed by changing wavelengths. This wavelength tunability provides a method for free-space reconfigurable optical interconnections with high connection density.

Paper Details

Date Published: 3 June 1994
PDF: 8 pages
Proc. SPIE 2216, Photonics at the Air Force Photonics Center, (3 June 1994); doi: 10.1117/12.177321
Show Author Affiliations
Serey Thai, Air Force Photonics Ctr./Rome Lab. (United States)
David A. Garafalo, Air Force Photonics Ctr./Rome Lab. (United States)

Published in SPIE Proceedings Vol. 2216:
Photonics at the Air Force Photonics Center
Andrew R. Pirich; Paul Sierak, Editor(s)

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