Optical signal-regenerating unit and transmission system compris

Details Optical signal-regenerating unit and transmission system compris Optical signal-regenerating unit and transmission system compris

1995-03-20

1996-07-02

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359161, H04B 1002, H04B 1000

Patent

active

055328636

ABSTRACT:
An optical signal-regenerating unit for a received optical signal pulse series (S.sub.1) having a modulation period T and a wavelength .lambda..sub.d. The optical unit includes a pulsed laser for producing a regenerated pulse series S.sub.2 having a pulse period equal to the modulation period T. Pulses of the received pulse series S.sub.1 are injected into the pulsed laser at instants at which the energy of the injected pulse exceeds the energy of a pulse then being built up in the laser. By maintaining that relationship, the multimode spectrum of the pulse laser is converted into a single mode spectrum having a wavelength equal to the wavelength .lambda..sub.d of the received radiation.

REFERENCES:
patent: 5369520 (1994-11-01), Avramopoulos et al.
"All-Optical Regenerator Based on Nonlinear Fiber Sagnac Interferometer", by M. Jinno et al, Electronics Letters, 2nd, Jul. 1992, vol. 28, No. 14, pp. 1350-1352.

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