Long period grating response to gamma radiation

Dan Sporea; Andrei Stӑncalie; Daniel Neguţ; Sylvie Delepine-Lesoille; Laurent Lablonde

doi:10.1117/12.2230233

27 April 2016 Long period grating response to gamma radiation

Dan Sporea, Andrei Stӑncalie, Daniel Neguţ, Sylvie Delepine-Lesoille, Laurent Lablonde

Proceedings Volume 9886, Micro-Structured and Specialty Optical Fibres IV; 98861P (2016) https://doi.org/10.1117/12.2230233
Event: SPIE Photonics Europe, 2016, Brussels, Belgium

Abstract

We report the evaluation of one long period grating (LPG) and one fiber Bragg grating (FBG) under gamma irradiation. The LPG was produced by the melting-drawing method based on CO2 laser assisted by a micro-flame and was engraved in a commercial single mode fiber SMF28 from Corning, grating length 25 mm, grating pitch of 720 μm. After the manufacturing of the grating, the fiber was re-coated with Acrylate and the grating was inserted into special ceramic case transparent to gamma radiation. The FBG is commercialized by Technica SA, and it is written in SMF-28 optical fiber (λ= 1546 nm; grating length of 12 mm; reflectivity > 80 %; bandwidth – BW @3 dB < 0.3 nm; side lobe suppress ratio – SLSR >15 dB; Acrylate recoating). By on-line monitoring of the LPG wavelength deep with an optical fiber interrogator during the irradiation exposure and pauses, both the irradiation induced shift (maximum 1.45 nm) and the recovery (in the range of 200 pm) phenomena were observed. Temperature sensitivity of the LPS was not affected by gamma irradiation.

Citation Download Citation

Dan Sporea, Andrei Stӑncalie, Daniel Neguţ, Sylvie Delepine-Lesoille, and Laurent Lablonde "Long period grating response to gamma radiation", Proc. SPIE 9886, Micro-Structured and Specialty Optical Fibres IV, 98861P (27 April 2016); https://doi.org/10.1117/12.2230233

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