High-speed signal-routing holographic switching system

Serey Thai; David A. Garafalo

doi:10.1117/12.177321

3 June 1994 High-speed signal-routing holographic switching system

Serey Thai, David A. Garafalo

Proceedings Volume 2216, Photonics at the Air Force Photonics Center; (1994) https://doi.org/10.1117/12.177321
Event: SPIE's International Symposium on Optical Engineering and Photonics in Aerospace Sensing, 1994, Orlando, FL, United States

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.

Citation Download Citation

Serey Thai and David A. Garafalo "High-speed signal-routing holographic switching system", Proc. SPIE 2216, Photonics at the Air Force Photonics Center, (3 June 1994); https://doi.org/10.1117/12.177321

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