Liao Xingzhan, Xu Xuming, Lin Haoliang. Study on a novel photonic crystal fiber with near zero and flat dispersion[J]. 2008,(3):22-24. DOI: 10.13756/j.gtxyj.2008.03.020.
in which a small air hole is introduced in its core to form a defect and the diameter of the first ring of air holes is changed.Its dispersion properties are studied by adopting the plane wave method
which shows that it has lower and flatter dispersion curve than the traditional PCF.By optimizing its structural parameters
a PCF with near zero and flat dispersion in the wavelength range of 1 350~2 010 nm can be designed.Its dispersion variation ΔD
<
0.5 ps/(km·nm) and dispersion slope variation ΔDslope