title: High-visibility photonic crystal fiber interferometer as multifunctional sensor.
abstract: 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).
authors: Corning Cable Systems SA de CV Reynosa Plant, Cd. Reynosa, Tamaulipas 88730, Mexico. CardenasGA@corning.com
authors: G A
authors: GA
authors: Cárdenas-Sevilla
authors: Fernando C
authors: FC
authors: Fávero
authors: Joel
authors: J
authors: Villatoro
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