Optical serial-to-parallel converter

Details Optical serial-to-parallel converter Optical serial-to-parallel converter

1988-12-19

1991-07-16

LaRoche, Eugene R.

Boots, shoes, and leggings

350356, 350 9616, 364713, 364822, 364824, 370 1, 377 64, 377 70, G02B 628, G11C 1700, G11C 506, G06F 756

Patent

active

050320106

ABSTRACT:
An optical serial-to-parallel converter constructed from at least two optical shift registers connected in cascade, each optical shift register having a 1.times.2 optical switch connected to its output. Each optical shift register in the sequence is optically coupled to the next sequential optical shift register through one output of said 1.times.2 optical switch to the input port of the next sequential optical shift register. The input port of the first optical shift register serves as the input to the optical serial-to-parallel converter, receiving a series of optical pulses. The output ports of each of said third optical switches serve as the output ports of the optical serial-to-parallel converter. The optical shift registers are controlled by two clocks, operating at the same rate, but each out of phase with the other. Control signals are provided by a third clock to output said optical pulses simultaneously from said optical shift registers through said optical output switches to effect an optical serial-to-parallel conversion.

REFERENCES:
patent: 4620180 (1986-10-01), Carlton
patent: 4761060 (1988-08-01), Sawano
"An Ultrafast All-Optical Switch", Friberg et al., Springer Series in Electronics 25, Photonic Switching, 1988 pp. 92-94.
R. A. Thompson and P. P. Giordano, "An Experimental Photonic Time Slot Interchanger Using Optical Fibers as Reentrant Delay Line Memories," J. Lightwave Technology, vol. LT-5 pp. 154-162, Jan. 1987.
H. Goto, "Photonic Time-Division Switching Technology, Technology Digest", Topical Meeeting on Photonic Switching, pp. 132-134, Mar. 1987.

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