Optical memory

Details Optical memory Optical memory

1997-08-01

2000-03-07

Ngo, Hung N.

Optical waveguides

With optical coupler

Particular coupling function

385 24, G02B 628

Patent

active

060350814

ABSTRACT:
A regenerative optical memory comprising a number of concatenated non-linear switching elements coupled by an optical storage element has a transfer function arranged so that only optical data having a pulse amplitude above a predetermined threshold is stored and the amplitude of optical data stored is substantially equalised to at least one predetermined level after a number of circulations within the optical memory. In a preferred embodiment, the optical memory is provided with an optical switching element within the optical loop for selectively switching at least a portion of the data pattern out of the optical loop in response to the application of an optical signal to an input of the optical switching element to alter the contents of the memory.

REFERENCES:
patent: 5311347 (1994-05-01), Kubo et al.
patent: 5533154 (1996-07-01), Smith
patent: 5566261 (1996-10-01), Hall et al.
Manning et al, "All Optical Clock Division Using a Semiconductor Optical Amplifier Loop Mirror with Feedback", Electronics Letters, vol. 32, No. 6, Aug. 1996, Stevenage, GB, pp. 1504-1505.

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