Single mode optical fiber, method of manufacturing the same,...

Optical waveguides – Optical fiber waveguide with cladding

Reexamination Certificate

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C385S141000

Reexamination Certificate

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06954572

ABSTRACT:
In a single mode optical fiber formed of a silica-based glass and including a glass part having a central core and a cladding region, the density of non bridging oxygen hole center in the glass part is not higher than 1.0×1014spins/g in terms of the spin density measured by an electron spin resonance method.

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Patent Abstracts of Japan, JP 07-244002, Sep. 19, 1995.

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