Method and device for the generation of ultrashort optical pulse

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

1997-06-05

1998-12-22

Palmer, Phan T. H.

Optical waveguides

Optical fiber waveguide with cladding

385147, 372 25, G02B 602

Patent

active

058527001

ABSTRACT:
Transform-limited ultrashort optical pulses are obtained by sending into a dispersion-shifted optical fibre pulses of such duration and intensity as to produce self-phase modulation. The pulses are also made to travel through a conventional fibre with suitable dispersion and are subjected to optical filtering, so as to compensate, for a particular peak power, the phase effect due to the chirp. 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.

REFERENCES:
patent: 4972423 (1990-11-01), Alfano et al.
patent: 5400350 (1995-03-01), Galvanauska
"Ultrashort Pulses from a Gain-Switched DFB Laser by Fiber Compensation of the Chirp and Thermal Tuning of the Cavity"; R. Calvani et al, Optical Fiber Technology, No. 1(1995) pp. 346-350.

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