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http://inaoe.repositorioinstitucional.mx/jspui/handle/1009/1713| The On–Off Contrast in an All Optical Switch Based on Stimulated Raman Scattering in Optical Fibers¹ | |
| EVGENY KUZIN Baldemar Ibarra Escamilla | |
| Acceso Abierto | |
| Atribución-NoComercial-SinDerivadas | |
| Raman scattering Optical fibers | |
| We present the investigation of the ON–OFF contrast in an optical switch using stimulated Raman Scattering in optical fibers. The setup consists of a Raman circuit of two fiber stages connected in series with a spectral filter rejecting the signal inserted between them. The stage 1 works as saturated amplifier, in this stage the pump pulses are saturated when pump and signal are launched to the input or travel through the fiber without saturation when pump only is launched at the input. The stage 2 works as a Raman amplifier with amplification depending on the pump power entering from the first stage. When pump only is launched at the input enter to the second stage without saturation and amplifies the signal entering this stage, strong signal pulses appear at the output; when pump and signal are launched to the input the pump is saturated in the first stage and the filter rejected the amplified signal, so that only low power pump enters the second stage and no signal pulses appear at the output. We use 2 ns pump pulses at 1528 nm and continuous-wave signal at 1620 nm. In the first stage of Raman circuit, we use both fibers with normal and anomalous dispersion. In fibers with anomalous dispersion, pump saturation is affected by modulation instability. We find that the contrast may be improved using fibers with normal and anomalous dispersion connected in series in the first stage, provided there is appropriate selection of their lengths. The best achieved contrast was 15 dB at 6 W pump peak power. | |
| Laser Physics | |
| 09-07-2012 | |
| Artículo | |
| Inglés | |
| Estudiantes Investigadores Público en general | |
| Flores Rosas, A., et al., (2012), The On–Off Contrast in an All Optical Switch Based on Stimulated Raman Scattering in Optical Fibers¹, Laser Physics, Vol. 22(8):1340–1346. | |
| ÓPTICA | |
| Versión aceptada | |
| acceptedVersion - Versión aceptada | |
| Aparece en las colecciones: | Artículos de Óptica |
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