R. K. Gangwar and V. K. Singh, "Design of Highly Birefringence Solid Core Photonic Crystal Fiber with Elliptical Holes,"
in Advanced Photonics,
OSA Technical Digest (online)
(Optical Society of America, 2014), paper JTu3A.9.
A high birefringent photonic crystal fiber is designed using circular and elliptical air holes and numerically studied by finite element method. The birefringence value reaches the magnitude of 10-5 at 1.55 μm