Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1994-06-17
1997-01-14
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359158, 359176, 359179, H04B 10155, H04B 1004
Patent
active
055945830
ABSTRACT:
Apparatus for reshaping a train of light pulses includes an electro-absorbent modulator to which the train of pulses is applied for the purpose of being resynchronized and reshaped. A periodic signal generator that is adjustable in phase and frequency applies a periodic signal to the modulator to voltage control said modulator. Servo-control means control said generator in phase and in frequency to minimize the mean photocurrent delivered by the modulator while it is both in its absorbent state and receiving a light pulse. The apparatus may also be used to recover a periodic signal that is synchronized on a train of modulated light pulses. The invention is applicable to long distance telecommunications by transmitting soliton pulses along optical fibers.
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France Telecom
Pascal Leslie
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