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(a) Schematic diagram of the liquid/liquid waveguide sensor. (b) Cross section view of the transparent window, . (c) Intensity profile change with the change in the refractive index.
Example of modal power distribution with different concentrations, from left to right: , (b) , and (c) .
Measured light intensity distribution at the same position with different concentrations. The right side is the sample area, and the left is the de-ionized water area.
Measurement of the light intensity area with different concentrations. The inset figure shows the relationship between the concentration and the refractive index of the solution.
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