Cryogenic Temperature Response of Reflection-Based Phase-Shifted Long-Period Fiber Gratings

• Type: Article in International Scientific Journal
• Date: 2015

Authors

Martins, R (Author) Other; Caldas, P (Author) Other; Teixeira, B (Author) Other; Azevedo, J (Author) Other; Monteiro, J (Author) Other; Belo, JH (Author) Other; araujo, j. p. (Author) FCUP; Santos, JL (Author) FCUP; Rego, G (Author) FCUP

Journal

Title: Journal of Lightwave Technology

Vol. 33

Pages: 2511-2517

ISSN: 0733-8724

Publisher: Optical Society of America

Indexing

ISI Web of Knowledge - 22 Citations

Scopus - 22 Citations

Other information

Authenticus ID: P-00G-C5M

DOI: 10.1109/jlt.2014.2381236

Abstract (EN): In this study, we investigated the temperature behavior of phase-shifted long-period fiber gratings (PS-LPFGs) inscribed in two types of optical fiber: B/Ge and SMF28. The experiments were carried out from 5 to 305 K using a superconducting quantum interference device magnetometer. The average temperature sensitivity obtained of -0.43 nm/K for PS-LPFGs inscribed in the B/Ge fiber is one order of magnitude larger than for PS-LPFGs inscribed in the SMF28 fiber, in the 60-240 K range. Values ranging from -0.08 nm/K up to 0.2 nm/K were obtained in the 5-35 K temperature range, which are considerably better than previous results achieved for metal-coated FBGs and also for LPFGs inscribed in a similar B/Ge codoped fiber. Nevertheless, further work is required in order to correctly address sensor reliability.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 7