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Parametric analysis of elasto-optic birefringent axis alignment in eccentrically coated polarization-maintaining
Applied Optics
|August 20, 2010
Summary
Ensuring proper optical axis alignment in high-birefringent fibers is crucial for polarization-sensitive devices. Fiber coating eccentricity can significantly shift the birefringent axis, impacting device performance.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- High-birefringent fibers are essential components in polarization-sensitive optical devices.
- Accurate alignment of the fiber's optical axes is critical for optimal device performance.
- Current alignment methods may require destructive testing or lack precision.
Purpose of the Study:
- To investigate the effect of fiber coating eccentricity on the extrinsic birefringent axis orientation.
- To provide a non-destructive method for predicting and managing optical axis shifts in high-birefringent fibers.
Main Methods:
- Utilizing the finite-element method (FEM) to model stress distribution within the fiber.
- Simulating the change in principal stress direction as a function of fiber coating eccentricity.
- Correlating stress direction changes to extrinsic birefringent axis orientation.
Main Results:
- Fiber coating eccentricity was found to induce significant shifts in the extrinsic birefringent axis.
- Eccentricity as low as [specify value if available] can cause shifts exceeding 1.5 degrees.
- The finite-element method accurately predicts the orientation of the extrinsic birefringent axis.
Conclusions:
- Fiber coating eccentricity is a critical factor influencing optical axis alignment in high-birefringent fibers.
- The finite-element method offers a valuable tool for non-destructive analysis and prediction of these alignment shifts.
- Understanding and mitigating the impact of eccentricity is vital for high-performance optical device applications.
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