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The sources of an absorption band at∼ 5 eV observed in SiO 2: GeO 2 and GeO 2 glasses
have not been unambiguously identified. Results reported here are consistent with the …

Silica glass has excellent optical transparency, or very small optical loss, over a wide range
of wavelengths between the near infrared and the ultraviolet. Making intensive use of this …

Narrow-line, permanent Bragg reflection gratings have been created in Ge-doped silica-core
optical fibers by interfering beams of a single 20-ns pulse of KrF excimer laser light. Of the …

Recent advances in the application of glassy materials in planar and fiber‐based photonic
structures have led to novel devices and components that go beyond the original thinking of …

Photoinscriptions of Bragg gratings have been carried out within six germanosilicate fibres.
Real time measurements of the spectral transmission, of the fwhm bandwidth and of the …

Over the past ten years, a large amount of research has been done investigating materials,
both glasses and polymers, which exhibit large non-linear susceptibilities, χ3. The measured …

Second order diffraction has been observed from Bragg gratings written within
germanosilicate glass fibres. Experimental results are reported on the evolution of the first …

The amplitude of the 5 eV optical absorption band of oxygen-deficient germanium-doped
silica samples (3GeO2: 97SiO2) was varied by annealing in oxygen at 1000° C for different …

Correlations between optical absorptions in ultraviolet and vacuum ultraviolet regions and
Ge E'centers were examined using 9SiO 2· 1GeO 2 glasses irradiated with ArF excimer laser …