Phase-based Bragg intra-grating sensing of strain gradients

Myo Myint Ohn; Simon Sandgren; Shang Yuan Huang; Robert Maaskant; Raoul Stubbe; Bengt Sahlgren; Raymond M. Measures; Helge Storoy

doi:10.1117/12.207667

20 April 1995 Phase-based Bragg intra-grating sensing of strain gradients

Myo Myint Ohn, Simon Sandgren, Shang Yuan Huang, Robert Maaskant, Raoul Stubbe, Bengt Sahlgren, Raymond M. Measures, Helge Storoy

Author Affiliations +

Proceedings Volume 2444, Smart Structures and Materials 1995: Smart Sensing, Processing, and Instrumentation; (1995) https://doi.org/10.1117/12.207667
Event: Smart Structures and Materials '95, 1995, San Diego, CA, United States

Abstract

Light reflected from chirped fiber Bragg gratings possess both phase and amplitude information which is unique. In this paper we report for the first time the use of the relative phase to determine the strain-induced linear chirp. By measuring this intramodal (chromatic) dispersion induced on the incident wave, the wavelength dependent penetration depth and therefore the strain gradient can be found by using a closed-form approximation. Moreover, the error can be reduced by selecting the appropriate grating properties like the writing induced chirp and the index variation parameters.

Citation Download Citation

Myo Myint Ohn, Simon Sandgren, Shang Yuan Huang, Robert Maaskant, Raoul Stubbe, Bengt Sahlgren, Raymond M. Measures, and Helge Storoy "Phase-based Bragg intra-grating sensing of strain gradients", Proc. SPIE 2444, Smart Structures and Materials 1995: Smart Sensing, Processing, and Instrumentation, (20 April 1995); https://doi.org/10.1117/12.207667

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

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