Response of long period gratings to gamma and neutron-gamma radiations

Flavio Esposito; Andrei Stăncălie; Daniel Neguţ; Agostino Iadicicco; Dan Sporea; Stefania Campopiano

doi:10.1117/12.2539791

28 August 2019 Response of long period gratings to gamma and neutron-gamma radiations

Flavio Esposito, Andrei Stăncălie, Daniel Neguţ, Agostino Iadicicco, Dan Sporea, Stefania Campopiano

Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 111990B (2019) https://doi.org/10.1117/12.2539791
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus

Abstract

Here, we report a comparative experimental investigation about the radiation sensitivity of Long Period Gratings (LPGs), fabricated in several optical fibers (from standard to radiation hardened ones) by electric arc discharge technique. For the purpose, similar set of gratings were tested under two different conditions. One is gamma radiation produced by a ⁶⁰Co source using a 0.2 kGy/h dose rate and up to 25-35 kGy total doses. The other is mixed neutron-gamma exposure in a nuclear reactor at 9 Gy/s gamma-rate and 1.25∙10¹² n/(cm² ∙s) neutron flux, reaching a total gamma dose of about 65 kGy and neutron fluence of 9.18∙10¹⁵ n/cm² . The analysis was focused on the real-time radiation-induced wavelength shift exhibited by the gratings. As an outcome, the responses of the LPGs subjected to the different radiations were compared and correlated with fiber compositions.

Citation Download Citation

Flavio Esposito, Andrei Stăncălie, Daniel Neguţ, Agostino Iadicicco, Dan Sporea, and Stefania Campopiano "Response of long period gratings to gamma and neutron-gamma radiations", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 111990B (28 August 2019); https://doi.org/10.1117/12.2539791

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