Glass manufacturing – Processes of manufacturing fibers – filaments – or preforms – Process of manufacturing optical fibers – waveguides – or...
Patent
1998-02-10
2000-10-10
Silverman, Stanley S.
Glass manufacturing
Processes of manufacturing fibers, filaments, or preforms
Process of manufacturing optical fibers, waveguides, or...
65399, 65421, 65422, 65426, C03B 37075, C03B 37018, C03B 600, C03B 618, C03C 1300
Patent
active
061289280
ABSTRACT:
Improved single-mode optical waveguide fibers having a central core region, surrounded by an inner cladding region through which light at a chosen signal wavelength will propagate to an appreciable degree along with propagation of same in the central core region, the inner core region further surrounded by an outer cladding region, the improvement comprising germanium dioxide in the inner cladding region at a concentration within the range of about 0.005 percent by weight to about 1 percent by weight of said inner cladding region, effective to significantly reduce the concentration of oxygen atoms in the inner cladding region which are available to form defects that cause hydrogen-induced attenuation. Also provided are core preforms, overclad preforms, and processes for making the fibers, core preforms and overclad preforms.
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Antos A. Joseph
Hunt Timothy L.
Powers Dale R.
Whedon William A.
Corning Incorporated
Krogh Timothy R.
Ruller Jacqueline A.
Servilla Scott S.
Silverman Stanley S.
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