Active-mode-locking optical-fibre pulsed laser generator having a variable instantaneous frequency
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United States of America Patent
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Oct 29, 1996
Grant Date -
N/A
app pub date -
May 31, 1995
filing date -
Jun 27, 1994
priority date (Note) -
Expired
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Abstract
A high-transmission-speed optical connection comprising a pulse-generation laser source, optical-fibre transmission means and a receiver, in which said optical-fibre means forms an optical fibre path, such that a pulsed signal of the soliton type is subjected to a broadening in time greater than 50% by effect of the chromatic dispersion, in which said laser source comprises an active and harmonic mode-locking optical-fibre laser wherein the fibre length, filter pass-band and power in the cavity are selected for emitting pulses of a Gaussian temporal profile having such a duration and bandwidth that, at the receiver, the duration of the pulses themselves is not more than 15% higher than the duration at the emission.
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