AI Article Synopsis
- The research discusses the creation of a special type of optical fiber with an elliptical core made from a copolymer of PMMA and PS, designed for enhanced performance.
- Two different fibers with varying bridge thicknesses were produced, showing that a thinner bridge increases both birefringence and sensitivity to pressure.
- The thinner fiber, with a 5 μm bridge, exhibited a notably high polarimetric sensitivity to hydrostatic pressure and minimal polarization cross talk, making it highly effective in its spectral range.
Article Abstract
We report on the fabrication of a birefringent side-hole polymer optical fiber with an elliptical core made of polymethyl metacrylate-polystyrene (PMMA/PS) copolymer and pure PMMA cladding. The fiber core is located in a narrow PMMA bridge separating the holes. Two fibers with different bridge thickness were fabricated and characterized. We demonstrate, experimentally and numerically, that, by narrowing the bridge between the holes, one can increase simultaneously the fiber birefringence and the polarimetric sensitivity to hydrostatic pressure. In the fiber with the bridge as narrow as 5 μm, we achieved a record-high polarimetric sensitivity to hydrostatic pressure ranging between 175 and 140 rad/MPa/m in the spectral range of 600-830 nm. The phase modal birefringence in this fiber is also high and exceeds 3×10(-5) at 600 nm, which results in small polarization cross talk.
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| http://dx.doi.org/10.1364/OL.40.003033 | DOI Listing |
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