Optical Inclinometer Based on a Phase-Shifted Bragg Grating in a Taper Configuration

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Joao P Moura (Author) Other; Susana O Silva (Author) FCUP; Martin Becker (Author) Other; Rothhardt, M (Author) Other; Hartmut Bartelt (Author) Other; Jose Luis Santos (Author) FCUP; Orlando Frazao (Author) FCUP

Journal

Title: IEEE Photonics Technology Letters

Vol. 26

Pages: 405-407

ISSN: 1041-1135

Publisher: IEEE

Indexing

ISI Web of Knowledge - 14 Citations

Scopus - 14 Citations

Other information

Authenticus ID: P-009-5CX

DOI: 10.1109/lpt.2013.2295323

Abstract (EN): A simple optical inclinometer based on a phase-shifted Bragg grating in a taper configuration is proposed. Two phase-shifted fiber Bragg gratings were fabricated using a DUV femtosecond laser technique in the taper region, with taper waist diameters of 30 mu m and 50 mu m. Both sensing heads were compared based on their response to angle and strain. Whereas the higher diameter sensor yielded a higher sensitivity to curvature (23.8 +/- 0.3 pm/degree), the lower diameter one was more sensitive to strain (8.94 +/- 0.04 pm/mu epsilon).

Language: English

Type (Professor's evaluation): Scientific