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Improvement of Switching Speed in Acoustooptic Switches for Multiple Optical Wavelength using Gigahertz Surface Acoustic Waves
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Collinear acoustooptic (AO) devices have unique wavelength-selective switching characteristics and are applicable to wavelength-division-multiplexing photonic switching systems. However, conventional AO devices require a switching time of a few µs. In this paper an improvement of the optical switching speed is discussed. In order to increase the switching rise-time to less than a few hundred ns, gigahertz surface acoustic waves (SAWs) are used to induce mode conversion with a short AO interaction length. The optical switching characteristics of the proposed device are theoretically discussed. Crosstalk between wavelength channels, which is accompanied by switching, is also discussed.
Title: Improvement of Switching Speed in Acoustooptic Switches for Multiple Optical Wavelength using Gigahertz Surface Acoustic Waves
Description:
Collinear acoustooptic (AO) devices have unique wavelength-selective switching characteristics and are applicable to wavelength-division-multiplexing photonic switching systems.
However, conventional AO devices require a switching time of a few µs.
In this paper an improvement of the optical switching speed is discussed.
In order to increase the switching rise-time to less than a few hundred ns, gigahertz surface acoustic waves (SAWs) are used to induce mode conversion with a short AO interaction length.
The optical switching characteristics of the proposed device are theoretically discussed.
Crosstalk between wavelength channels, which is accompanied by switching, is also discussed.
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