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We demonstrate a tunable optical filter/sensor based on a microfluidic interferometer integrated onto a compact planar chip. The interaction of the beam with a water/air interface provides a tunable Mach-Zehnder response with 28 dB extinction ratio.
We demonstrate a tunable microfluidic optical interferometer integrated onto a single compact planar chip. The interaction of the beam with a water/air interface provides a Mach-Zehnder like response with a strong extinction ratio (~28dB).
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