To compensate the dispersion of non-zero dispersion-shifted fibers(NZDSF) with low dispersion slope,a depressed-index-core photonic crystal fiber is researched.Three dispersion compensating fibers are designed by using finite element method.Numerical results show that at 1550nm the relative dispersion slope of each dispersion compensating fiber is perfectly matched with that of the corresponding NZDSF and the residual dispersion is very low over the C band after compensating.In addition,the designed compensating fibers are low nonlinear photonic crystal fibers whose effective areas are more than 20μm2.
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胡颉,王健.低折射率芯色散补偿光子晶体光纤的设计[J].激光与红外,2008,38(4):367~370 HU Jie, WANG Jian. Design of Dispersion Compensating Fibers Based on a Depressed-index-core Photonic Crystal Fiber[J]. LASER & INFRARED,2008,38(4):367~370