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Optical Bistability in an Acousto-Optic Tunable Filter (AOTF) Operating with Short Optical Pulses

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DOI: 10.4236/jemaa.2012.43015    3,599 Downloads   6,104 Views   Citations

ABSTRACT

In this paper we report for the first time the presence of bistability in an acoustic-optic tunable filter (AOTF) operating with ultrashort (2 ps) optical light pulses. The results for the study of bistability has shown the dependence of the hysteresis curve with the product of the coupling constant (κ) by the length of the device (ξL) and the conversion power-coupling constant factor (G). The range of bistability varies significantly with both G and with κξL parameters. The variation of κξL directly increases the size of the range of bistability hysteresis while the increase in G causes the bistability to occur at low powers. The phenomenon of optical bistability (OB) is the object of increasing interest due to its possibilities for important device applications. A bistable device is a device with a capability to generate two different outputs for a given input and the physical requirements for this are an intensity-dependence refractive index and an optical feedback mechanism.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

K. Sabóia, A. Queiroz, F. Lima, C. Sobrinho, J. Menezes and A. Sombra, "Optical Bistability in an Acousto-Optic Tunable Filter (AOTF) Operating with Short Optical Pulses," Journal of Electromagnetic Analysis and Applications, Vol. 4 No. 3, 2012, pp. 112-117. doi: 10.4236/jemaa.2012.43015.

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