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Sub-100 fs Higher Order Soliton Compression in Dispersion-Flattened Fibers

Masahiro TSUCHIYA, Koji IGARASHI, Satoshi SAITO, Masato KISHI

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Summary :

We review recent progresses in our studies on the fiber-optic soliton compression and related subjects with special emphasis on dispersion-flattened fibers (DFFs). As for the ultimately short pulse generation, it has been demonstrated to compress 5 ps laser diode pulses down to 20 fs with a 15.1 m-long single-stage step-like dispersion profiled fiber employed. The compression was brought about through a series of the higher order soliton processes in conjunction with a single and ordinary erbium-doped fiber preamplifier, and DFFs contained at its end played a major role. We have performed intensive investigations on the DFF compression mechanisms in the 100-20 fs range. A fairly reliable model was developed for the higher order soliton propagation along a DFF in the temporal range from 100 down to 30 fs by taking into consideration the higher order nonlinear and dispersion effects as well as incident pulse shape dependence. Through the simulation, parametric spectrum generation originating from the modulation instability gain was pointed out at frequencies apart from the pump wave frequency, which agrees with the experimental observation. Its possible application is also discussed.

Publication
IEICE TRANSACTIONS on Electronics Vol.E85-C No.1 pp.141-149
Publication Date
2002/01/01
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section INVITED PAPER (Special Issue on Ultrafast Optical Signal Processing and Its Application)
Category
Optical Pulse Compression, Control and Monitoring

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