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Mode-locking characteristics and relative intensity noise reduction in hybrid soliton pulse source

Published online by Cambridge University Press:  21 January 2004

N. Dogru  and
S. Ozyazici
N. Dogru*
Affiliation:
Department of Electrical and Electronics Engineering, University of Gaziantep, 27310 Gaziantep, Turkey
S. Ozyazici
Affiliation:
Department of Electrical and Electronics Engineering, University of Gaziantep, 27310 Gaziantep, Turkey
*
dogru@gantep.edu.tr
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Abstract

The noise and mode-locking phenomena of a hybrid soliton pulse source (HSPS) utilizing different fiber Bragg gratings (FBG) with or without linear chirp are described. The HSPS is modeled by a time-domain solution of the coupled-mode equations including spontaneous emission noise, and relative intensity noise (RIN) is calculated using numerical solutions of these equations. It is found that transform-limited pulses over a wide tuning range around the fundamental mode-locking frequency are generated from mode-locked HSPS with linearly chirped uniform and Gaussian apodized FBGs. Mode-locked pulses that are not transform-limited are generated over a wide tuning range from HSPS with Gaussian apodized and uniform FBGs. These gratings can give transform-limited pulses only over a limited tuning range around the fundamental mode-locking frequency. It is also found that RIN reduction is possible for the mode-locked HSPS by selecting a suitable apodization function such as Gaussian and linear chirp rate.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 25 , Issue 3 , March 2004 , pp. 151 - 157
Copyright
© EDP Sciences, 2004

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