High-accuracy measurement of cladding noncircularity based on phase velocity difference between acoustic polarization modes | Zendy

Sun Do Lim | Zendy; Hoon Cheol Park | Zendy; Kwanil Lee | Zendy; Sang Bae Lee | Zendy; Byoung Yoon Kim | Zendy

Open Access

High-accuracy measurement of cladding noncircularity based on phase velocity difference between acoustic polarization modes

Author(s) -

Sun Do Lim,

Hoon Cheol Park,

Kwanil Lee,

Sang Bae Lee,

Byoung Yoon Kim

Publication year - 2010

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.18.003574

Subject(s) - optics , photonic crystal fiber , cladding (metalworking) , materials science , polarization (electrochemistry) , optical fiber , polarization maintaining optical fiber , phase velocity , phase difference , graded index fiber , single mode optical fiber , polarization mode dispersion , dispersion shifted fiber , phase (matter) , fiber optic sensor , physics , composite material , chemistry , quantum mechanics

A high-accuracy measurement method for the noncircularity (ellipticity) of silica glass fibers is demonstrated. This method makes use of the phase velocity difference between two eigen polarization modes of the lowest-order acoustic flexural wave in an optical fiber. The relationship between the acoustic phase velocity difference and the fiber ellipticity is formulated. Three types of optical fibers were examined; photonic crystal fiber, elliptical core fiber, and standard single-mode fiber. Fiber ellipticity of less than 0.001 was successfully measured.

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