12 November 1996 Auto-aligning and splicing PM fibers of different types with a passive method
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Abstract
Many different types of polarization maintaining (PM) fibers and polarizing (PZ) fibers are playing important roles in most of fiber optical gyros and high speed communication networks. A new method for passively aligning and fusion- splicing those fiber types are developed with the help of the lens-effect tracing technique. Instead of calculating the correlation directly between the two POL profiles measured from the two sides of fibers, two simulated POL profiles are generated with a truncated trigonometric Fourier series expansion. The azimuthal position of each fiber and the angular offset between the fibers are then obtained by either an analytic method or an indirect correlation method. With the methods, different types of PM and PZ fibers, such as bow-tie, PANDA, elliptical core and elliptical jacket, can be automatically aligned and spliced to each other with a mean extinction ratio higher than 30 dB, and mean difference between the actively measured and passively estimated extinction ratio about 1.0 dB.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wenxin Zheng, "Auto-aligning and splicing PM fibers of different types with a passive method", Proc. SPIE 2837, Fiber Optic Gyros: 20th Anniversary Conference, (12 November 1996); doi: 10.1117/12.258197; https://doi.org/10.1117/12.258197
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KEYWORDS
Optical fibers

Phase modulation

Fiber optic gyroscopes

Cladding

Refractive index

Polarization

Fusion splicing

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