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A diaphragm based Michelson interferometric fiber-optic acoustic sensor based on symmetric 3×3 coupler is demonstrated in this paper. An ellipse fitting differential cross multiplication algorithm is proposed for signal interrogating. Experimental results show that a minimum detectable pressure (MDP) level of ∼500 μPa/Hz1/2 is obtained.
We introduce physical-layer network coding for a passive optical interconnect architecture in datacenter networks. Results reveal that half of the wavelengths can be saved to obtain latency in the magnitude of microseconds.
A novel PhC-like metamaterial structure with low fabricating accuracy requirements is proposed. We design and fabricate a 2.6μm×2.6μm coupler employing such structure. The measured excess loss of each port is less than 1dB over 60nm.
An optical fiber acoustic sensor based on nonstandard fused coupler and aluminum foil is proposed and experimentally demonstrated. Acoustic vibration is measured by detecting the insertion loss of the nonstandard fused coupler. As the number of the coupling cycle increases, sensitivity of the multicycle fused coupler-based sensors to acoustic vibration could be improved. Under the same experimental...
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