Optical fibre Bragg grating cladding mode sensors

M. D. Baiad; M. Gagné; E. de Montigny; W.-J. Madore; N. Godbout; C. Boudoux; R. Kashyap

doi:10.1117/12.2026073

20 May 2013 Optical fibre Bragg grating cladding mode sensors

M. D. Baiad, M. Gagné, E. de Montigny, W.-J. Madore, N. Godbout, C. Boudoux, R. Kashyap

Author Affiliations +

Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87941H (2013) https://doi.org/10.1117/12.2026073
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

In this paper we propose and demonstrate two forms of a device for sensing cladding modes efficiently. The cladding modes, generated by an untilted and tilted fibre Bragg grating (TFBG) written in SMF28 fibre are captured by splicing it to an in-line double-clad fibre coupler (DCFC). A comaprison is made of the capture efficiency of the cladding modes in two configurations; one in which the TFBG is taper spliced to the DCF, or in the other in which an FBG in an SMF28 is etched down to match the outer core of the DCF. In both cases the cladding modes are captured efficiently, but with significantly improved results for the former configuration. We demonstrate surrounding refractive index sensing using a new signal analysis scheme based on the extinction of each cladding mode resolved over a bandwidth of over ~60nm. This robust device has the advantage of faithfully transmitting the cladding modes over a long distance and is therefore suitable for remote sensing over long distances. The sensitivity of the device is discussed. This device may be used in a variety of applications such as for bend, strain, temperature and surrounding refractive index sensing.

Citation Download Citation

M. D. Baiad, M. D. Baiad, M. Gagné, M. Gagné, E. de Montigny, E. de Montigny, W.-J. Madore, W.-J. Madore, N. Godbout, N. Godbout, C. Boudoux, C. Boudoux, R. Kashyap, R. Kashyap, "Optical fibre Bragg grating cladding mode sensors", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87941H (20 May 2013); doi: 10.1117/12.2026073; https://doi.org/10.1117/12.2026073

ACCESS THE FULL ARTICLE

PERSONAL SIGN IN
Full access may be available with your subscription

Email or Username Forgot your username?

Password Forgot your password?

Show

Remember Email/Username on this computer

Remember Password

No SPIE account? Create an account
or Institutional Sign In via Shibboleth

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $14.40

Non-members: $18.00 ADD TO CART

Show All Keywords

Keywords/Phrases

Search In:

Publication Years