Inproceedings,

Ultrafast optical switching in a nonlinear loop mirror (NOLM) constructed from dispersion decreasing fiber (DDF)

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1999 SBMO/IEEE MTT-S INTERNATIONAL MICROWAVE AND OPTOELECTRONICS CONFERENCE, PROCEEDINGS, VOLS 1 & 2: WIRELESS AND PHOTONICS BUILDING THE GLOBAL INFOWAYS, page 222-224. 345 E 47TH ST, NEW YORK, NY 10017 USA, Soc Brasileira Microondas & Optoelectr; IEEE, IEEE, (1999)1999 SMBO/IEEE MTT-S International Microwave and Optoelectronics Conference, RIO JANEIRO, BRAZIL, AUG 09-12, 1999.

Abstract

The performance of a nonlinear optical loop mirror (NOLM) device constructed with a dispersion decreasing fiber (DDF) operating in the soliton and quasi-soliton regime is investigated numerically. Results showed that the soliton regime present best behavior when compared with the quasi-soliton regime. In the quasi-soliton regime, the transmitted pulse present strong shaping effects (compression). However in the soliton regime, the transmitted pulses present fewer fluctuations in the time duration with pump power. Our simulations considering four different profiles, linear, hyperbolic, exponential and Gaussian conclude that, in average, the hyperbolic profile gives the lowest pump power for the first, second and third transmission peaks of transmission comparing with the other profiles. The Gaussian profile presents the worse behavior. It was also observed that with a proper choice of the dispersion profile we could have a transmitted pulse with no distortion in the soliton regime. For the quasi-soliton regime, strong compression was observed.

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