Fabrication of Arsenic Sulfide Optical Fiber with Low Hydrogen Impurities

Arsenic selenide glass optical fibers typically possess extrinsic absorption bands in the infrared wavelength region associated with residual hydrogen and oxygen related impurities, despite using purified precursors. We report a purification process based on the addition of 0.1 wt% tellurium tetrachloride (TeCl4) to the glass. During melting, the chlorine from TeCl4 reacts with the hydrogen impurities to produce volatile products (e.g., HCl) that can be removed by subsequent dynamic distillation. The processing conditions have been modified accordingly to give very low H–Se impurity content. Consequently, the H–Se absorption band centered at 4.57 μm has been reduced from tens of dB/m to 0.2 dB/m.

[1]  Ishwar D. Aggarwal,et al.  Chalcogenide fibers deliver high IR power , 1996 .

[2]  Ishwar D. Aggarwal,et al.  Fabrication of long lengths of low-loss IR transmitting As/sub 40/S/sub (60-x)/Se/sub x/ glass fibers , 1996 .

[3]  D. Lezal,et al.  The preparation of chalcogenide glasses in chlorine reactive atmosphere , 1996 .

[4]  Richard D. Driver,et al.  The Characterization of Infrared Transmitting Optical Fibers , 1989 .

[5]  F. M. Ernsberger,et al.  Molecular Water in Glass , 1977 .

[6]  P. B. Macedo,et al.  Intrinsic and impurity infrared absorption in As2Se3 glass , 1975 .

[7]  Jasbinder S. Sanghera,et al.  Active and passive chalcogenide glass optical fibers for IR applications: a review , 1999 .

[8]  Ishwar D. Aggarwal,et al.  Fabrication of low-loss IR-transmitting Ge/sub 30/As/sub 10/Se/sub 30/Te/sub 30/ glass fibers , 1994 .

[9]  Ishwar D. Aggarwal,et al.  Infrared Evanescent Absorption Spectroscopy of Toxic Chemicals Using Chalcogenide Glass Fibers , 1995 .

[10]  Leslie Brandon Shaw,et al.  Development and Infrared Applications of Chalcogenide Glass Optical Fibers , 2000 .

[11]  J. M. Chamberlain,et al.  Infrared structural studies of GeySe1−y glasses , 1978 .

[12]  John R. Gannon,et al.  Materials For Mid-Infrared Waveguides , 1981, Photonics West - Lasers and Applications in Science and Engineering.

[13]  J. Freitas,et al.  Structural investigation of chalcogenide and chalcohalide glasses using Raman spectroscopy , 1999 .

[14]  Jasbinder S. Sanghera,et al.  Fiber optic IR reflectance sensor for the cone penetrometer , 1995, Other Conferences.

[15]  Jasbinder S. Sanghera,et al.  Development of low-loss IR transmitting chalcogenide glass fibers , 1995, Photonics West.

[16]  Richard M. Martin,et al.  A molecular model for the vibrational modes in chalcogenide glasses , 1972 .