Optical time slot interchanger apparatus and method of operation

Details Optical time slot interchanger apparatus and method of operation Optical time slot interchanger apparatus and method of operation

1994-03-31

1995-03-28

Chilcot, Jr., Richard F.

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359139, H04S 1408

Patent

active

054022568

ABSTRACT:
An Optical Time Slot Interchange (OTSI) Apparatus that has relatively low optical fiber requirements and good attenuation and signal-to-noise characteristics. This OTSI uses parallel feedback (PFB) to provide the delays. This PFB OTSI can be implemented with an n.times.n optical crossbar switch. The PFB OTSI is conditionally, i.e., rearrangeably, non-blocking for 16.times.16 crossbar switch implementations if a controller using the control method of the invention is also included.

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R. A. Thompson et al., "An Experimental Photonic Time-Slot Interchanger Using Optical Fibers as Reentrant Delay-Line Memories", Journal of Lightwave Technology, vol. LT-5, No. 1, Jan. 1987, pp. 154-162.
R. A. Thompson, "Architectures with Improved Signal-to-Noise Ratio in Photonic Systems with Fiber-Loop Delay Lines", IEEE Journal on Selected Areas in Communications, vol. 6, No. 7, Aug. 1988, pp. 1096-1106.

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