Multimodal Interference Based on Large-Core Air-Clad Photonic Crystal fibres for Simultaneous Measurement of Multiparameters

• Type: Article in International Conference Proceedings Book
• Date: 2011

Authors

Susana Silva (Author) FCUP; Santos, JL (Author) FCUP; Malcata, FX (Author) Other; Jens Kobelke (Author) Other; Kay Schuster (Author) Other; Frazao, O (Author) FCUP

Conference proceedings International

Title: 21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS

21st International Conference on Optical Fiber Sensors

Ottawa, CANADA, MAY 15-19, 2011

Indexing

ISI Web of Knowledge - 0 Citations

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Scientific classification

FOS: Engineering and technology > Other engineering and technologies

Other information

Authenticus ID: P-002-XBA

DOI: 10.1117/12.885999

Abstract (EN): This work describes a large-core air-clad photonic crystal fibre-based sensing structure that is sensitive to refractive index, temperature and strain. The sensing head is based on multimodal interference, and relies on a single mode - large-core air-clad photonic crystal fibre - single mode fibre configuration. Using two distinct large-core air-clad PCF geometries it is possible to obtain an optical spectrum with two dominant loss bands, at wavelengths that have different sensitivities to physical parameters. This characteristic is explored to demonstrate a sensing head that permits the strain-temperature discrimination functionality. It is also shown the large-core air-clad photonic crystal fibre can be applied to implement a sensing head sensitive to the water refractive index changes induced by temperature variations.

Language: English

Type (Professor's evaluation): Scientific