Glass manufacturing – Processes – Forming product or preform from molten glass
Patent
1986-11-25
1987-12-15
Bashore, S. Leon
Glass manufacturing
Processes
Forming product or preform from molten glass
65 42, 65 421, 65 36, C03B 2320, C03B 3710
Patent
active
047131055
ABSTRACT:
In the interest of producing high-strength splice connections between silica-based glass fibers a method of using a tri-particle flow of gases for flame fusion is disclosed. An outer relatively high-velocity flow of oxygen surrounds an intermediate, lower-velocity flow of chlorine or oxygen which in turn surrounds a central flow of H.sub.2, D.sub.2, NH.sub.3, or ND.sub.3.
Particularly high strengths are achieved when a central flow of hydrogen or deuterium and an intermediate flow of chlorine are used in such a fashion as to heat fiber ends to be spliced to temperatures of 500 degrees C. and beyond only after these ends have been enveloped by chlorine.
REFERENCES:
patent: 3791714 (1974-02-01), Maurer
patent: 4118618 (1978-10-01), Gauthier et al.
patent: 4326870 (1982-04-01), Bendit et al.
patent: 4345137 (1982-08-01), Mignien et al.
patent: 4604119 (1986-08-01), Kuhl et al.
Krause et al., "Tensile Strengths Greater than 4 Gpa for Lightguide Fusion Splices", Electronics Letters, vol. 17, No. 21, 10/15/81.
Krause John T.
Kurkjian Charles R.
Paek Un-Chul
American Telephone and Telegraph Company AT&T Bell Laboratories
Bashore S. Leon
Boyer Michael K.
Businger Peter A.
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