Behavior of Bragg gratings, written in germanosilicate fibers, against [gamma]-ray exposure at low dose rate

Journal Article · Tue Nov 01 04:00:00 EST 1994 · IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/68.334836· OSTI ID:6795747

Niay, P; Bernage, P; Douay, M; Fertein, E; Lahoreau, F ^[1]; Bayon, J F; Georges, T; Monerie, M ^[2]; Ferdinand, P; Rougeault, S; Cetier, P ^[3]

---

1. Univ. des Sciences et Technologies de Lille, Villeneuve d'Ascq (France). Lab. de Dynamique Moleculaire et Photonique
2. CNET, Lannion (France)
3. CE/Saclay, Gif-sur-Yvette (France)

Bragg gratings have been written within four germanosilicate fibers either by a pulsed or by a continuous-wave exposure of each fiber to a coherent UV two-beam interference pattern. These gratings have been exposed under steady state conditions to [gamma]-ray doses as high as 10[sup 4] Grays. The dose rates ranged between 10 Gy/h and 1.3 [times] 10[sup 2] Gy/h. The transmission spectra of the fibers have been recorded during and after the [sup 60]Co irradiation, near the grating Bragg wavelengths. Whereas the induced loss reached 600 dB/km near 1.3 [mu]m, no significant change in the spectral characteristics of the gratings could be detected within the experimental accuracy, enabling their future use in a nuclear environment.

• OSTI ID: 6795747
• Journal Information: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Photonics Technology Letters (Institute of Electrical and Electronics Engineers); (United States) Vol. 6:11; ISSN 1041-1135; ISSN IPTLEL
• Country of Publication: United States
• Language: English

Related Subjects

22 GENERAL STUDIES OF NUCLEAR REACTORS
220400 -- Nuclear Reactor Technology-- Control Systems
440200* -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
COBALT 60
COBALT ISOTOPES
DATA
DIFFRACTION GRATINGS
ELECTROMAGNETIC RADIATION
EXPERIMENTAL DATA
FIBERS
GAMMA RADIATION
GRATINGS
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR FACILITIES
NUCLEAR POWER PLANTS
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
OPTICAL FIBERS
PHYSICAL RADIATION EFFECTS
POWER PLANTS
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
REACTOR INSTRUMENTATION
THERMAL POWER PLANTS
YEARS LIVING RADIOISOT