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A single mode fiber acousto optic (AO) switch based on a null coupler at wavelength of 1 55 μm is reported. According to the coupled mode theory, power distribution of the null coupler with the acoustic wave is formulated for general case. Excess loss of 0.1 dB and the schematic graph of throughput and coupled power are obtained experimentally.
A single mode fiber acousto optic (AO) switch based on a null coupler at wavelength of 1 55 μm is reported. According to the coupled mode theory, power distribution of the null coupler with the acoustic wave is formulated for general case. Excess loss of 0.1 dB and the schematic graph of throughput and coupled power are obtained experimentally.