Unit for generating signal pulses, transmitter comprising such a

Details Unit for generating signal pulses, transmitter comprising such a Unit for generating signal pulses, transmitter comprising such a

1995-06-28

1996-10-22

Boudreau, Leo

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359181, 359188, 359124, H04B 1004

Patent

active

055683037

ABSTRACT:
A unit for generating signal pulses. comprises a first, pulsed laser for supplying a pulse series having a pulse period T and a wavelength .lambda..sub.1, and a modulation unit comprising a second laser. The second laser has a wavelength band which is different from .lambda..sub.1 and can be modulated at a modulation period T in accordance with a data signal to be transported. The radiation from the second laser ) can be injected into the first laser at instants for which it holds that E(P.sub.m)>E(LP.sub.i), in which E(P.sub.m) is the radiation energy of the second laser injected into the first laser at the relevant instant and E(LP.sub.i) is the radiation energy built up in the first laser at the relevant instant. Moreover, the unit comprises a wavelength discriminator which selects the pulses of wavelength .lambda..sub.1 from the radiation emitted by the first laser after injection.

REFERENCES:
patent: 4635263 (1987-01-01), Mollenauer
patent: 4805235 (1989-02-01), Henmi
patent: 5212711 (1993-05-01), Harvey et al.
patent: 5311351 (1994-05-01), Chesnoy
patent: 5373383 (1994-12-01), LaGasse
"Monolithic Semiconductor Soliton Transmitter", P. B. Hansen et al, OFC '94 Technical Digest, pp. 74-75.

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