Optical fiber having reduced residual stress discontinuity

Optical waveguides – Optical fiber waveguide with cladding

Reexamination Certificate

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Details

C385S124000, C385S125000, C385S126000, C385S127000, C385S128000

Reexamination Certificate

active

10919731

ABSTRACT:
An optical fiber having reduced residual stress discontinuity is disclosed. The optical fiber includes a core which is an optical transmission medium and a clad for surrounding the core. The residual stress discontinuity at an interface between the core and the clad is 20.0 MPa or less, which is represented by an absolute value of a difference between a minimum axial stress at (r/a)=0.8-1.1 and a maximum axial stress at (r/a)=1.0-1.2, wherein a is the radius of the core and r is a radius measured from the center of the core.

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Tetsuji Abe et al.; “Axial Residual Stress Measurement for Silica Opitcal Fibers Using A Polariscope;” 13thCongress of the International Commission for Optics; 1984; XP009046544; 2 pgs.

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