Fiber Bragg gratings in microstructured optical fibers for stress monitoring

Thomas Geernaert; Geert Luyckx; Eli Voet; Tomasz Nasilowski; Karima Chah; Martin Becker; Hartmut Bartelt; Waclaw Urbanczyk; Jan Wójcik; Wim De Waele; Joris Degrieck; Francis Berghmans; Hugo Thienpont

doi:10.1117/12.820441

19 May 2009 Fiber Bragg gratings in microstructured optical fibers for stress monitoring

Thomas Geernaert, Geert Luyckx, Eli Voet, Tomasz Nasilowski, Karima Chah, Martin Becker, Hartmut Bartelt, Waclaw Urbanczyk, Jan Wójcik, Wim De Waele, Joris Degrieck, Francis Berghmans, Hugo Thienpont

Author Affiliations +

Proceedings Volume 7357, Photonic Crystal Fibers III; 73570I (2009) https://doi.org/10.1117/12.820441
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

Combining the functionalities of fiber Bragg gratings (FBGs) and microstructured optical fibers (MOFs) offers promising technological perspectives in the field of optical fiber sensors. Indeed, MOFs could overcome some of the limitations of FBGs in conventional fibers for sensor applications. The added value of MOFs stems from the ability to design an optical fiber in which an FBG acts as a sensor with a selective sensitivity, e.g. a sensor that is sensitive to directional strain but not to temperature. For this purpose we use a MOF with a phase modal birefringence on the order of 8×10^-3. A FBG in this MOF yields two Bragg peak wavelengths, with a wavelength separation that depends on the phase modal birefringence of the MOF. We characterize these FBGs for transversal loads on a bare fiber and compare the results with simulated sensitivities. Then, we embed the sensor in a composite coupon and measure the response of the Bragg peak wavelengths as a function of the applied transversal pressure on the composite material. This allows drawing conclusions on the advantages of FBGs in MOFs for sensing applications.

Citation Download Citation

Thomas Geernaert, Geert Luyckx, Eli Voet, Tomasz Nasilowski, Karima Chah, Martin Becker, Hartmut Bartelt, Waclaw Urbanczyk, Jan Wójcik, Wim De Waele, Joris Degrieck, Francis Berghmans, and Hugo Thienpont "Fiber Bragg gratings in microstructured optical fibers for stress monitoring", Proc. SPIE 7357, Photonic Crystal Fibers III, 73570I (19 May 2009); https://doi.org/10.1117/12.820441

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