High-Visibility Photonic Crystal Fiber Interferometer as Multifunctional Sensor

High-Visibility Photonic Crystal Fiber Interferometer as Multifunctional Sensor

A photonic crystal fiber (PCF) interferometer that exhibits record fringe contrast (~40 dB) is demonstrated along with its sensing applications. The device operates in reflection mode and consists of a centimeter-long segment of properly selected PCF fusion spliced to single mode optical fibers. Two...

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Bibliographic Details
Main Authors: Joel Villatoro, Fernando C. Fávero, G. A. Cárdenas-Sevilla
Format: Article
Language:English
Published: MDPI AG 2013-02-01
Series:Sensors
Subjects:
interferometry
modal interference
photonic crystal fibers
refractive index sensors
liquid level sensors
Online Access:http://www.mdpi.com/1424-8220/13/2/2349
Description
Summary:A photonic crystal fiber (PCF) interferometer that exhibits record fringe contrast (~40 dB) is demonstrated along with its sensing applications. The device operates in reflection mode and consists of a centimeter-long segment of properly selected PCF fusion spliced to single mode optical fibers. Two identical collapsed zones in the PCF combined with its modal properties allow high-visibility interference patterns. The interferometer is suitable for refractometric and liquid level sensing. The measuring refractive index range goes from 1.33 to 1.43 and the maximum resolution is ~1.6 × 10−5.
ISSN:1424-8220

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