Optical unit for multiplying the frequency of a clock signal

Details Optical unit for multiplying the frequency of a clock signal Optical unit for multiplying the frequency of a clock signal

1997-03-10

1999-02-02

Lee, John D.

Coherent light generators

Particular resonant cavity

Folded cavity

327119, 372 97, H01S 3083

Patent

active

058675205

ABSTRACT:
An optical unit for multiplying the frequency of a clock signal includes at least two series-arranged ring lasers. Each ring laser has a different resonance frequency f.sub.i. The unit has an input for receiving a signal, for example, a low-frequency electric signal for modulating one of the ring lasers. The repetition frequency of at least one of the ring lasers is variable by adapting the optical path length of the resonator.

REFERENCES:
patent: 5327448 (1994-07-01), Holonyak, Jr. et al.
patent: 5438300 (1995-08-01), Saban et al.
"Monolithic Passively Mode-Locked Semiconductor Lasers" R. Van Roijen et al, Proceedings of SPIE, Photonics West, Jan. 27, 1996, San Jose, CA, 10 pp.
"All Optical Clock Recovery from 5GB/S RZ Data Using a Self Pulsating 1.56 .mu.M Laser Diode" P.E. Barnsley, IEEE Photonics Technology Letters, vol. 3, No. 10, Oct. 1991, pp. 942-945.

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