Modified rectangular lattice photonic crystal fibers with high birefringence and negative dispersion.
We propose a modified rectangular lattice PCF and numerically investigate its birefringence and dispersion. Based on the plane wave expansion method, it is shown that the proposed structure provides high birefringence and negative dispersion. Numerical results show that the birefringence of the modified PCF reaches 10(-2) and the leakage loss is about 1000 times smaller than that of an original rectangular PCF because the modification gives rise to the strong confinement of guided modes. Dispersion and its slope are also negative over the C band.
Nanophotonics Laboratory, Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju 500-712, Korea. sekim@gist.ac.kr
Soan
S
Kim
Chul-Sik
CS
Kee
Chung Ghiu
CG
Lee