Interferometric determination of gamma radiation effects on optical parameters of a GRIN optical fibre

Characterization of Optical Fibers by Multiple-Beam Interferometry

“…[132] The fringes are used to determine optical properties of a monomode fiber and a GRIN optical waveguide. [133]- [136] By this method, a single interferogram of FECOs is enough to give all the needed information revealing the optical fiber parameters across the visible spectrum with sufficient accuracy.…”

The Formation of Fringes of Equal Chromatic Order across Double Clad Fiber in the Presence of High Power Lasers

“…Medhat et al used the FECO to measure the dispersion curve of optical fibers with single cladding [6] [7]. In addition, Medhat et al studied theoretically and experimentally the effect of the temperature and Gamma radiation on the dispersion curve of optical fibers with single cladding [8] [9].…”

Gamma-ray sensor based on microdisk whispering gallery modes

“…In the most cases, the effect of interaction of ionizing radiation (typically Gamma rays) with material establishes color centers. The creation of color centers cause optical absorption at some wavelengths [1], and therefore can extend the absorption band. It was found that the Gamma radiation increase the real part of refractive index of doped glasses, V-number, numerical aperture and number of modes [1].…”

“…The blue-shift of resonance frequency is observed when Gamma-ray irradiation on microdisk increases. The dependence of Ge-doped silica refractive index on wavelength and Gamma dose has been calculated as [1]: where λ is wavelength in micron, γ is Gamma dose in MGy, E is ionic absorption frequency that is kept constant as 2 100 m μ and A, B, C and D are Sellmeier coefficients obtained by fitting the following function on exponential data as…”