Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers

<table>Predicted period of the interferometers at 1550 nm as a function of the diameter of the micro tapers for different lengths of their waist. The inset shows the experimental transmission spectrum of a 5 <svg height="12.175" id="M53" style="vertical-align:-3.56265pt" version="1.1" viewbox="0 0 9.5625 12.175" width="9.5625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg>m-thick taper in which the average fringe separation is 1.4 nm and the width of the fringes is around 0.9 nm.</table>

Journal of Sensors

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Figure 5

Figure 5: Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers 