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Polarization holding in birefringent single-mode fibers
Optics Letters
|August 28, 2009
Summary
Perturbations in optical fibers cause mode coupling, degrading polarization-holding ability. A new wavelength averaging technique simplifies measuring this power transfer and confirms random mode coupling theory.
Area of Science:
- Optics and Photonics
- Materials Science
Background:
- Highly birefringent single-mode fibers are crucial for polarization-dependent applications.
- Fiber perturbations can couple polarization modes, reducing polarization-holding capability.
Purpose of the Study:
- To develop a simple method for measuring power transfer between polarization modes in birefringent fibers.
- To experimentally validate theories of random mode coupling.
Main Methods:
- Utilizing a broadband light source to achieve wavelength averaging of power in fiber modes.
- Measuring power transfer to the cross-polarized mode as a function of fiber length.
Main Results:
- Demonstrated wavelength averaging effectively measures polarization mode coupling.
- Experimental results confirm the predictions of random mode coupling theory.
Conclusions:
- The developed technique provides a straightforward way to quantify polarization mode coupling.
- Experimental validation supports the theoretical understanding of mode coupling in optical fibers.
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