Method and device for the generation of ultrashort optical...

Details Method and device for the generation of ultrashort optical... Method and device for the generation of ultrashort optical...

H - Electricity

04

B

H04B 10/18 (2006.01) H04B 10/04 (2006.01)

Patent

CA 2209185

A method and apparatus for generating ultrashort optical pulses. The apparatus comprises a source for producing pulses in a first band, a compensating optical fibre, and a span of dispersion-shifted optical fibre. The compensating optical fibre receives the pulses generated by the source and has a minimum dispersion in a second band different from the first band and dispersion characteristics for compensating phase distortion due to chirp of the pulses. The dispersion-shifted optical fibre is coupled in series to the compensating optical fibre and has a dispersion minimum in the first band for adjusting the peak power level of the pulses emitted by the source to produce self-phase modulation in the dispersion-shifted fibre. Pulse peak power is selected so as to coincide with the vertex of the parabola plotting the square of the duration of the outgoing pulse versus the peak power of the incoming signal.

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