Temperature independent Refractive Index measurement using White Light Interferometry

• Type: Article in International Conference Proceedings Book
• Date: 2012

Authors

gouveia, c (Author) Other; zibaii, m (Author) Other; latifi, h (Author) Other; marques, mj (Author) FCUP; baptista, jm (Author) Other; jorge, pas (Author) FCUP

Conference proceedings International

Title: 22ND INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS, PTS 1-3

22nd International Conference on Optical Fiber Sensors (OFS)

Beijing, PEOPLES R CHINA, OCT 15-19, 2012

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 2 Citations

Other information

Authenticus ID: P-002-EEJ

DOI: 10.1117/12.975650

Abstract (EN): In this work a fiber optic interferometric system for differential refractive index measurement is described. The system is based on a white light Mach-Zehnder configuration, with serrodyne phase modulation, to interrogate two similar non-adiabatic tapered optical fiber sensors in a differential scheme. In this situation it is possible to measure the refractive index independent of temperature. Signal processing with low cost digital instrumentation developed in Labview environment allows a detectable change in refractive index of Delta n approximate to 2x10(-6), which is, from the best of our knowledge the highest resolution achieved using a fiber taper device. The results demonstrate the potential of the proposed scheme to operate as chemical and biological sensing platform.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4