Share Email Print
cover

Proceedings Paper • new

Gamma-radiation-induced attenuation of light in polarization-maintaining pure-silica-core PANDA fibers
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Radiation-induced attenuation (RIA) of light is studied in a pure-silica-core Panda fiber under γ-irradiation in the dose range 1-106 Gy at the dose rates in the range 0.015-5 Gy/s. A 5-mW erbium fiber superluminescent source or a white-light lamp (integral power of <0.5 μW) are used as the probe light source. Both RIA dose dependences at separate wavelengths in the near-IR range and RIA spectra in the near-IR and visible ranges at fixed doses are investigated. The spectra are Gaussian deconvolved and analyzed. 1.55-μm light (500 μW) is found to produce photobleaching not only of the 0.95- and 1.12-eV RIA bands, the effect observed previously, but also of the 2.6- and 1.63-eV RIA bands associated with inherent and strain-assisted self-trapped holes (STHs), respectively. RIA at λ=1.55 μm is found not to depend on dose rate at those below 0.15 Gy/s, which opens up the possibility to simply estimate the upper bound of RIA gained by the end of space mission. In particular, the RIA upper bound at λ=1.55 μm of ~1.5 dB/km is predicted for a 1-kGy space mission. RIA at λ=1.55 μm in pure-silica-core Pandas is also found to cease to depend on dose rate and probe light power at high doses (~105 Gy). The reason is that all the short-lived RCCs sensitive to the former parameters completely disappear at high doses, whereas RIA at λ=1.55 μm becomes wholly determined by the long-wavelength RIA band peaking at λ<1.7 μm and known to be dose-rate-independent and photobleaching-insensitive.

Paper Details

Date Published: 16 April 2019
PDF: 8 pages
Proc. SPIE 11029, Micro-structured and Specialty Optical Fibres VI, 110290V (16 April 2019); doi: 10.1117/12.2520430
Show Author Affiliations
Pavel F. Kashaykin, Fiber Optics Research Ctr. (Russian Federation)
Alexander L. Tomashuk, Fiber Optics Research Ctr. (Russian Federation)
Irina S. Azanova, Fiber Optics Research Ctr. (Russian Federation)
Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Olga L. Vokhmyanina, Fiber Optics Research Ctr. (Russian Federation)
Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Tatiana V. Dimakova, Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Igor A. Maltsev, Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Yulia O. Sharonova, Fiber Optics Research Ctr. (Russian Federation)
Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Elena A. Pospelova, Perm Scientific-Industrial Instrument-Making Co. (Russian Federation)
Evgueni M. Dianov, Fiber Optics Research Ctr. (Russian Federation)


Published in SPIE Proceedings Vol. 11029:
Micro-structured and Specialty Optical Fibres VI
Kyriacos Kalli; Alexis Mendez; Pavel Peterka, Editor(s)

© SPIE. Terms of Use
Back to Top