Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers

<table>The top micrographs are the cross-section of some PCFs employed to fabricate tapers and the lateral view of the expanding zone of a taper. The middle drawing is a diagram of interferometers built with tapered PCFs. <svg height="15.4" id="M32" style="vertical-align:-3.3907pt" version="1.1" viewbox="0 0 16.1625 15.4" width="16.1625" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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</svg> are, respectively, the length and width of the taper waist. The bottom drawing represents the transmission measuring setup.</table>

Journal of Sensors

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Figure 4

Figure 4: Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers 