Unbalance of the Sagnac interferometer through nonlinear asymmetry
| Autor: | A. C. Ferreira, J. W. M. Menezes, H. A. Pinho, W. B. Fraga, G. F. Guimarães, D. N. S. Cavalcante, F. T. C. B. Magalhães |
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| Rok vydání: | 2016 |
| Předmět: |
Physics
business.industry General Physics and Astronomy 02 engineering and technology 01 natural sciences Signal Electronic Optical and Magnetic Materials 010309 optics symbols.namesake Nonlinear system Interferometry 020210 optoelectronics & photonics Optics Transmission (telecommunications) Modulation 0103 physical sciences 0202 electrical engineering electronic engineering information engineering symbols Coherent anti-Stokes Raman spectroscopy Electrical and Electronic Engineering business Raman spectroscopy Raman scattering |
| Zdroj: | Journal of Electromagnetic Waves and Applications. 30:1227-1239 |
| ISSN: | 1569-3937 0920-5071 |
| DOI: | 10.1080/09205071.2016.1193451 |
| Popis: | In this work, we studied the behavior of Sagnac interferometer powered by a CW signal and under the nonlinear effects of self-phase modulation, cross-phase modulation, and Raman, in two configurations (balanced and unbalanced) and five scenarios (by varying the value of the Raman fraction). In the balanced configuration, we observed that the presence of Raman effect in the loop changes the curves of transmissivity and reflectivity of the device, but only the components generated by the Raman effect (Stokes waves) are switched to the transmitted port. In the unbalanced configuration, we obtained an oscillating behavior as for transmissivity and reflectivity, which breaks the characteristic of nonlinear fiber mirror, thus enabling the transmission of the pumping wave for certain combinations of values of input power and Raman fraction. |
| Databáze: | OpenAIRE |
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