Range-resolved signal processing for fibre segment interferometry applied to dynamic long-gauge length strain sensing

Date published

2015-11

Free to read from

Supervisor/s

Journal Title

Journal ISSN

Volume Title

Publisher

SPIE

Department

Type

Article

ISSN

Format

Citation

Thomas Kissinger ; Ricardo Correia ; Thomas O. H. Charrett ; Stephen W. James and Ralph P. Tatam. Range-resolved signal processing for fibre segment interferometry applied to dynamic long-gauge length strain sensing. Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96341Q, September 28, 2015.

Abstract

A range-resolved interferometric signal processing technique using sinusoidal optical frequency modulation is applied to fibre segment interferometry. Here, six optical fibre segments of gauge length 12.5 cm are used as interferometric strain sensors and are formed between seven weak, broadband fibre Bragg gratings, acting as in-fibre partial reflectors. In a very simple and cost-effective optical setup using injection current modulation of a laser diode source, interferometric measurement of acoustic wave propagation in a metal rod is used to demonstrate the capabilities of the technique.

Description

Software Description

Software Language

Github

Keywords

Interferometry, Fibre Strain Sensing, Signal Processing, Fibre Segment Interferometry

DOI

Rights

Relationships

Relationships

Supplements

Funder/s