Fiber-optic modulation and switching based on the Raman effect

I. Torres Gomez, A. Martínez Rios, A. N. Starodymov, V. N. Filippov, V. Minkovich

Research output: Contribution to journalArticleScientificpeer-review


This paper discusses optically controlled pulsed switching and modulation of high-power radiation in optical fibers, based on induced Raman scattering. It presents the transfer function of an optical switch based on a fiber-optic Sagnac interferometer and the characteristics of a Raman modulator for high-power ytterbium fiber lasers as a function of the laser power and the germanium concentration in the fiber. Spectral-selective optical switching with contrast greater than 18 dB is experimentally demonstrated. The optimum GeO2 concentration for increasing the efficiency of a modulator based on the Raman effect is determined. Induced losses of less than 1 dB are expected at optical powers of 5-100 W. (C) 2002 Optical Society of America.

Original languageEnglish
Pages (from-to)302-307
Number of pages6
JournalJournal of Optical Technology
Issue number5
Publication statusPublished - May 2002
Externally publishedYes
Publication typeA1 Journal article-refereed




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