By J. Lucas (auth.), Prof. Rui M. Almeida (eds.)
ISBN-10: 9400935617
ISBN-13: 9789400935617
ISBN-10: 9401080933
ISBN-13: 9789401080934
The box of heavy steel halide glasses (namely fluorides) is barely ten years previous now, however it has built quickly because the discovery of fluorozirconate glasses through the crowd on the college of Rennes (France). the most cause of this used to be the early demonstration of the big strength of such glasses to be used as long-haul ultra-low loss center infrared waveguide fabrics, aided partially by way of the clinical curiosity held through their strange brief variety constructions. for that reason, major learn efforts have been initiated within the educational, govt and business sectors in Europe, the USA and Japan. although, the hunt for a complete product has consistent with haps ended in a partial overlooking of a few of the extra funda psychological features by means of the medical neighborhood. After the preliminary pleasure, the staff during this box are maybe at a crossroads the place attenuations below 1 dB/Km must be acquired for lengthy lengths of fiber of excellent chemical and thermal balance, with a purpose to warrantly continuous R&D sUE ports. for this reason, there's a powerful want for a severe asses sment of the potential for halide glasses for infrared fiber optics and the formula of techniques for destiny re seek during this quarter and different comparable fields.
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Ceram. , 65, c168 (1982) p. 1420. 6. , et al. : CO 2 absorption in HMF glasses. Proc. 3 rd Int. Symp. Halide Glasses, Rennes (France/1985). 7. , et al. : J. opt. Soc. 9 (1973) p. 1141. 8. , et al. : Contract report LVF/CNET nQ 8235232. 9. , et al. : Optical absorption of 3d transition metals and rare earth elements in ZrF4 glasses. Phys. Chem. Glasses, 24, 5 (1983) p. 135. 10. , et al. : Redox states and absorption losses of 3d transition metals in fluoride glasses. , 24, 9, (1985) p. L714. 11.
Robinson. We do not grind the large pieces of ZrF 4 and the losses are small. We compensate for these by add~ng a little extra ZrF 4 . Q: J. Lucas. What is the melting pOint of ZrF4? A: M. Robinson. 5 atm of pressure. Q: C. Moynihan. How is the dissolution process for the larger chunks of each component? A: M. Robinson. When melting is done under a CCI atmosphere, LaF 3 is the last to melt. The other component~ melt readily. 27 CHEMICAL ANALYSIS OF TRACE IMPURITIES PHILIPP H. KLEIN U. S. C. 20375-5000 ABSTRACT Ideally, analytical methods for materials used in halide glasses must detect and differentiate impurity levels down to the parts-per-billion or parts-per-trillion level.
Halide Glasses for Infrared Fiberoptics by J. Lucas (auth.), Prof. Rui M. Almeida (eds.)
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