This article is cited in 7 papers

Nonlinear optical phenomena

Frequency modulation and compression of optical pulses in an optical fibre with a travelling refractive-index wave

I. O. Zolotovskii, V. A. Lapin, D. I. Sementsov

Ulyanovsk State University

Abstract: We have studied the conditions for spectral broadening, frequency modulation and compression (both temporal and spectral) of Gaussian pulses propagating in a fibre with a travelling refractive-index wave. Analytical expressions have been derived for the dependences of pulse duration, chirp and spectral width on the distance travelled through the fibre, parameters of the fibre and radiation launched into it. Based on the numerical analysis we have studied the behaviour of these characteristics by changing the coefficient of the refractive-index modulation and other parameters of the travelling refractive-index wave.

Keywords: frequency modulation, compression of optical pulses, travelling refractive-index wave.

Received: 28.07.2015
Revised: 11.11.2015

 English version: Quantum Electronics, 2016, 46:1, 39–44

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