Optical circulating shift register

Details Optical circulating shift register Optical circulating shift register

1991-11-05

1992-10-13

Healy, Brian

Optical waveguides

With optical coupler

Plural

385 31, 385122, 385 42, 356345, 377 54, 377 64, 377 72, 377 76, 365 64, 365 76, 365 77, 36471501, 36471508, 364822, 364824, 359107, 359341, G02B 628, G01B 902, G11C 1900, G11C 506

Patent

active

051557797

ABSTRACT:
An all-optical circulating shift register encodes a received optical clock signal with a value derived from an encoded optical signal received at a control port thereof. A data input to the shift register is used to modify an encoded optical signal. The resulting encoded clock signal, appearing at an output port, is coupled back to the control port. The shift register uses the encoded clock signal at the control port to encode a subsequently-received clock signal. In one embodiment, the optical shift register is implemented using a Sagnac switch having a feedback path coupled between an output port and a control port of the Sagnac switch.

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