Titlebook: Defects in SiO2 and Related Dielectrics: Science and Technology; G. Pacchioni,L. Skuja,D. L. Griscom Book 2000 Springer Science+Business M

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BULK SILICAS PREPARED BY LOW PRESSURE PLASMA CVD: FORMATION OF STRUCTURE AND POINT DEFECTSoptic telecommunications. Optical loss in modern telecom silica fibers does not exceed 0.2 dB/km at the wavelength of 1.55 micrometers. Such a loss level is achievable in the so-called telecom spectral window, in which a compromise between the absorption tail of the infrared fundamental vibration of O-Si-0 and Rayleigh scattering takes place.

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ONE- AND TWO-QUANTUM UV PHOTO-REACTIONS IN PURE AND DOPED SILICA GLASSES. 2. GERMANIUM OXYGEN DEFICIUV absorption band of GODC at 242 nm corresponds to the S.—S. transition (Fig. 1). Concentration of GODC is controlled by glass and fiber fabrication conditions [.], and may amount to as much as N. = 10. cm..

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PHOTOINDUCED REFRACTIVE INDEX CHANGE AND SECOND HARMONIC GENERATION IN MCVD GERMANOSILICATE CORE FIBium oxygen-deficient centres. Besides, nitrogen appears to enter into the glass network in a sufficient concentration to modify the glass network and to additionally increase photosensitivity of the fibres.

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Defect-Free Vitreous Networks: The Idealised Structure of SiO2 and Related Glassesgral part of that structure. It should also be noted that, since the ideal structure is disordered, departures from normality can occur in the direction of both decreased and increased order, the former leading to what are commonly known as defects.

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