Abstract
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 language | English |
|---|---|
| Pages (from-to) | 302-307 |
| Number of pages | 6 |
| Journal | Journal of Optical Technology (A Translation of Opticheskii Zhurnal) |
| Volume | 69 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - May 2002 |
| Externally published | Yes |
| Publication type | A1 Journal article-refereed |
Keywords
- LOOP MIRROR
- LASERS
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