Effects of color centers absorption on the spectrum of the temperature-dependent radiation-induced attenuation in fiber

Abstract

Spectra ranging from 800 to 1650 nm of the temperature-dependent radiation-induced attenuation (RIA) in the irradiated and sufficiently annealed fiber with germanium and phosphorous dopant has been measured. These RIA spectra were investigated based on the mechanism of color centers absorption. With the configurational coordinate model, these RIA spectra were decomposed by the absorption bands of three kinds of color centers. The effects of color centers absorption on the spectrum of temperature-dependent RIA is discussed by comparing the absorption intensity of different color centers at a same wavelength. Moreover, the temperature-dependent RIA of the fiber has been measured separately at 850, 1310, and 1550 nm. The measured results agreed well with the analysis of RIA spectra.

Effect of radiation-induced color centers absorption in optical fibers on fiber optic gyroscope for space application

“…The RIA spectrum decomposition is to be addressed as the superposition of several corresponding color centers. Therefore, the RIA spectra are fitted by Gaussian functions [18] as widely assumed for defects in fibers. The fitting formula is expressed as…”

A radiation–temperature coupling model of the optical fiber attenuation spectrum in the Ge/P co-doped fiber

“…[4,5] The RIA in optical fibers has been extensively studied. [6][7][8][9][10][11] During the past decades and a number of papers have treated the modeling of RIA with the irradiation dose at a single wavelength during irradiation and recovery after irradiation. The power-law model, the stretched saturating exponential model, and the saturating exponentials model have been proposed by different authors.…”