Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers

<table>Micrograph of the cross-section of the typical PCF employed to build interferometers with LPGs. Diagrams of interferometers based on two LPGs in series, a misaligned point end together with an LPG, and an LPG together with a collapsed region in the PCF. The separation between the splitting gratings and recombining element is denoted by <svg height="12.4375" id="M22" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 13.4375 12.4375" width="13.4375" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Journal of Sensors

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Figure 3

Figure 3: Highly Sensitive Sensors Based on Photonic Crystal Fiber Modal Interferometers 