Optical properties of GeO2 glass and optical fibers.

The optical properties of GeO(2) glass were investigated to clarify its potentiality as an optical fiber material. Glass samples were prepared by the flame hydrolysis and the melting techniques, and their Rayleigh scattering and infrared absorption properties were examined. Optical fibers composed of a pure GeO(2) core and an F-doped GeO(2) cladding were drawn to clarify the scattering loss characteristics. The Rayleigh-scattering intensity obtained from spectral loss measurements on the fibers agreed with that measured in bulk samples, and the intensity relative to that of SiO(2) glass was found to be approximately 3. These results suggest that a minimum loss of 0.15 dB/km is expected at a wavelength of 2 microm.

[1]  S. Sakaguchi,et al.  Refractive Index Dispersion in Ternary Germanate Glasses , 1995 .

[2]  T. Miyashita,et al.  Infrared optical fibers , 1982 .

[3]  G. G. Devyatykh,et al.  BRIEF COMMUNICATIONS: Material dispersion and Rayleigh scattering in glassy germanium dioxide, a substance with promising applications in low-loss optical fiber waveguides , 1980 .

[4]  S. H. Wemple,et al.  ZnCl2 glass: A potential ultralow‐loss optical fiber material , 1978 .

[5]  Masaharu Ohashi,et al.  Optical properties of sodium alminosilicate glass , 1992 .

[6]  高橋 健太郎,et al.  SiO2-PO5/2, GeO2-PO5/2系ガラスの物性と構造 , 1976 .

[7]  P. B. Macedo,et al.  Rayleigh and Brillouin Scattering in K2O–SiO2 Glasses , 1973 .

[8]  H. Takahashi,et al.  A germanium-oxide glass optical fiber prepared by a VAD method , 1984, Journal of Lightwave Technology.

[9]  Yasuo Asano,et al.  Transmission characteristics and reliability of pure-silica-core single-mode fibers , 1986 .

[10]  F. W. Ostermayer,et al.  Fundamental optical attenuation limits in the liquid and glassy state with application to fiber optical waveguide materials , 1973 .

[11]  Lyons,et al.  High-temperature light scattering and the glass transition in vitreous silica. , 1986, Physical review. B, Condensed matter.

[12]  S. Sakaguchi,et al.  Drawing‐induced 1.53‐μm wavelength optical loss in single‐mode fibers drawn at high speeds , 1985 .

[13]  M. E. Lines,et al.  Scattering losses in optic fiber materials. I. A new parametrization , 1984 .

[14]  K. Inada,et al.  A new graphical method relating to optical fiber attenuation , 1976 .

[15]  M. Lines.  Absolute Raman intensities in glasses: I. Theory , 1987 .

[16]  Shin-ichi Todoroki,et al.  Rayleigh Scattering in Silica Glasses , 1996 .

[17]  S. H. Wemple.  Material dispersion in optical fibers. , 1979, Applied optics.

[18]  J. C. Mikkelsen,et al.  The relative Raman cross sections of vitreous SiO2, GeO2, B2O3, and P2O5 , 1978 .

[19]  N. Shibata,et al.  Optical attenuation in pure and doped fused silica in the ir wavelength region , 1977 .