**Radiation Effects in Optical Materials and Photonic Devices**

[66] Dianov EM, Mashinsky VM, Neustruev VB, Sazhin OD, Brazhkin VV, Sidorov VA. Optical absorption and luminescence of germanium oxygen-deficient centers in

[67] Kir'yanov AV, Dvoyrin VV, Mashinsky VM, Il'ichev NN, Kozlova NS, Dianov EM. Influence of electron irradiation on optical properties of bismuth doped silica fibers.

[68] Razdobreev I, El Hamzaoui H, Ivanov VY, Kustov EF, Capoen B, Bouazaoui M. Optical spectroscopy of bismuth-doped pure silica fiber preform. Opt. Lett. 2010; 35: 1341–1343.

[69] Bufetov IA, Semenov SL, Vel'miskin VV, Firstov SV, Bufetova GA, Dianov EM. Optical properties of active bismuth centres in silica fibres containing no other dopants.

[70] Skuja LN, Trukhin AN, Plaudis AE. Luminescence in germanium-doped glassy SiO2.

[71] Griscom DL. Self-trapped holes in pure-silica glass: A history of their discovery and characterization and an example of their critical significance to industry. J. Non-Cryst.

[72] Watanabe Y, Kawazoe H, Shibuya K, Muta K. Structure and mechanism of formation of drawing- or radiation-induced defects in SiO2:GeO2 optical fiber. Jpn. J. Appl. Phys.

[73] Friebele EJ, Griscom DL, Sigel, Jr. GH. Defect centers in a germanium-doped silica-core

[74] Trukhin AN, Sharakovski A, Grube J, Griscom DL. Sub-band-gap-excited lumines‐ cence of localized states in SiO2–Si and SiO2–Al glasses. J. Non-Cryst. Sol. 2010; 356:

[75] Kir'yanov AV, Ghosh S, Paul MC, Barmenkov YO, Aboites V, Kozlova NS. Ce-doped and Ce/Au-codoped alumino-phospho-silicate fibers: Spectral attenuation trends at high-energy electron irradiation and posterior low-power optical bleaching. Opt.

[76] Kir'yanov AV. Electron-irradiation and photo-excitation darkening and bleaching of

Yb doped silica fibers: comparison. Opt. Photon. J. 2011; 1: 155–166.

densified germanosilicate glass. Opt. Lett. 1997; 22: 1089–1091.

Opt. Expr. 2011; 19: 6599-6608.

36 Radiation Effects in Materials

Quantum Electron. 2010; 40: 639–641.

Sol. 2006; 352: 2601–2617.

Mater. Expr. 2014; 4: 434–448.

1986; 25: 425–431.

982–986.

Phys. Status Solidi A. 1984; 84: K153–K157.

optical fiber. J. Appl. Phys. 1974; 45: 3424–3428.

Dan Sporea and Adelina Sporea

Additional information is available at the end of the chapter

http://dx.doi.org/10.5772/62547

#### **Abstract**

The chapter continues previous reviews on radiation effects in optical fibers and on the use of optical fibers/optical fiber sensors in radiation monitoring, published by InTech in 2010 and 2012, by referring to radiation effects in optical materials, with an empha‐ sis on those operating from visible to mid-IR, and on some photonic devices such as optical fibers for amplifiers, fiber Bragg gratings and long period gratings. The focus is on optical materials and fiber-based devices designed for both terrestrial and space‐ borne applications. For the presented subjects, an overview of available data on Xrays or gamma rays, electron beams, alpha particles, neutrons, and protons effects is provided. In addition, comments on dose rate, dose, and/or temperature effects on materials and devices degradation under irradiation are mentioned, where appropri‐ ate. The optical materials and photonic devices reliability under ionizing radiation exposure is discussed as well, as the opportunities to use them in developing radia‐ tion sensors or dosimeters. The chapter includes an extensive bibliography and references to last published results in the field. Novel proposed applications of photonic devices in charged particle beam diagnostics, quasi-distributed radiation field mapping and the evaluation of radiation effects in materials for mid-IR spectroscopy are briefly introduced to the reader.

**Keywords:** radiation effects, optical materials, optical fibers, fiber Bragg grating, long period grating
