High-accuracy measurement of cladding noncircularity based on phase velocity difference between acoustic polarization modes
- High-accuracy measurement of cladding noncircularity based on phase velocity difference between acoustic polarization modes
- 임선도; 박현철; 이관일; 이상배; 김병윤
- noncircularity; fiber; polarization
- Issue Date
- Optics express
- VOL 18, NO 4, 3574-3581
- 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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- KIST Publication > Article
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