Dual-wavelength source of high-repetition-rate,...

Details Dual-wavelength source of high-repetition-rate,... Dual-wavelength source of high-repetition-rate,...

H - Electricity

04

B

H04B 10/04 (2006.01)

Patent

CA 2140083

A method and apparatus for producing high quality optical pulse trains at a high repetition rate first phase modulates a cw optical signal with an external phase modulator. The central optical frequencies (i.e., the carrier frequency and at least one pair of sidebands) of the phase modulated signal are then removed from the signal. Each of the remaining side-bands that have not been removed independently form an optical pulse train of the desired transform-limited pulses.

L'invention est constituée par une méthode et appareil servant à produire des trains d'impulsions lumineuses de grande qualité à une fréquence de répétition élevée. Dans la méthode de l'invention, une onde lumineuse entretenue est modulée par un modulateur de phase externe. Les fréquences centrales (c.-à-d. la fréquence de la porteuse et celles d'une paire de bandes latérales) du signal à phase modulée sont ensuite extraites de ce signal. Chacune des bandes latérales résiduelles qui n'a pas été éliminée forme un train d'impulsions lumineuses ayant la forme désirée.

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