Rayleigh Scattering in K2O–MgO–SiO2 and Na2O–B2O3–SiO2 Glasses

✍ Scribed by Kyozo Tsujikawa; Masaharu Ohashi

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 163 KB
• Volume: 6
• Category: Article
• ISSN: 1068-5200
• DOI: 10.1006/ofte.1999.0315

✦ Synopsis

We investigated the Rayleigh scattering of ternary glass systems K O᎐MgO᎐SiO and Na O᎐B O ᎐SiO . The minimum Rayleigh scattering 2 2 2 23 2 coefficients in both glasses were considerably lower than that in pure silica glass. The Rayleigh scattering due to concentration fluctuation of Na O᎐B O ᎐SiO glass increased rapidly with decreasing Na O content. By 2 2 3 2 2 contrast, that of K O᎐MgO᎐SiO glass was almost independent of the K O 2 2 2

content. We found that K O᎐MgO᎐SiO glasses with a high SiO content 2 2 2 Ž . 70;75 mol% can be expected as candidates for fabricating ultralow loss fiber because of their low Rayleigh scattering, zero material dispersion wavelength near 1.55 m.