Controlling the sensitivity of a Non-adiabatic tapered optical fiber for measuring the refractive index using all fiber Sagnac loop Interferometer

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

Authors

Zibaii, MI (Author) Other; Jorge, PAS (Author) FCUP; Frazao, O (Author) FCUP; Latifi, H (Author) Other

Conference proceedings International

Title: International Conference on Applications of Optics and Photonics

International Conference on Applications of Optics and Photonics

Braga, Portugal, 3 a 7 de Maio de 2011

Indexing

ISI Web of Knowledge - 1 Citation

Scopus - 0 Citations

Other information

Authenticus ID: P-002-X9C

DOI: 10.1117/12.892102

Abstract (EN): A single-mode non-adiabatic tapered optical fiber (NATOF) sensor was inserted into a Sagnac loop interferometer allowing tuning its sensitivity to refractive index (RI) by use of polarization control. By adjusting any polarization controllers inserted in the Sagnac loop interferometer, various cladding modes are selectively excited in each arm of the interferometric taper resulting into different phase changes for the clockwise and counterclockwise beams. By this method, sensitivity of the sensor for RI in the range from 1.3380 to 1.3510 was tuned between 876.24 RIU/nm to 1233.07 RIU/nm.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 6