Photonic time-slot interchangers using cascade-structured integr

Details Photonic time-slot interchangers using cascade-structured integr Photonic time-slot interchangers using cascade-structured integr

1989-10-16

1992-04-07

Coles, Sr., Edward L.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359138, H04J 1408

Patent

active

051033330

ABSTRACT:
A photonic time-slot interchanger with fiber-loop delay-line memories is provided with multistage, cascade-structured integrated optical switches in the write-in, store and circulate and read-out functions to provide improved signal-to-crosstalk ratios and control tolerances, and to increase significantly the number of time slots supported by the improved interchanger.

REFERENCES:
Lars Thylen, "Integrated Optics in LiNbO.sub.3 Recent Developments in Devices for Telecommunications", Journal of Lightwave Technology, Jun., 1988; pp. 847-861.
Rod C. Alferness, "Waveguide Electrooptic Modulators", IEEE Transactions on Microwave Theory and Techniques, Aug., 1982; pp. 1121-1137.
Tadashi Saitoh and Takaai, Mukai, "Recent Progress in Semiconductor Laser Amplifiers", Journal of Lightwave Technology, Nov. 1988; pp. 1656-1664.
R. A. Thompson & P. P. Giordano, "An Experimental Photonic Time-Slot Interchanger Using Optical Fiber as Reentrant Delay Line Memories", J. Lightwave Tech., Jan. 1987.
R. A. Thompson, "Architecture with Improved Signal-to-Noise Ratios in Photonic Systems with Fiber Loop Delay Lines", IEEE J. Selected Areas in Comm., Aug. 1988.

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