Photonic crystal fiber for dispersion compensation.
The dispersion and mode characteristics in a dual-concentric-core photonic crystal fiber, based on pure silica, are simulated by the multipole method. The fiber exhibits very large negative dispersion due to anticrossing of two individual inner core and outer core modes. Near the wavelength of 1.55 microm, we could obtain narrowband dispersion-compensating fiber with dispersion values of -23,000 ps/km/nm, broadband dispersion-compensating fiber with dispersion values from -1000 ps/km/nm to -2500 ps/km/nm over a 200 nm range, and kappa values near 300 nm, which matched well with standard single mode fiber. It shows that even if there are some changes in the structure parameters during fabrication, these fibers can still maintain a fine dispersion-compensating property.
Zhao
Xingtao
X
Measurement Technology and Instrumentation Key Laboratory of Hebei Province, Institute of Infrared Fibers and Sensors, Yanshan University, Qinhuangdao 066004, China. xt-81@sohu.com
Zhou
Guiyao
G
Li
Shuguang
S
Liu
Zhaolun
Z
Wei
Dongbin
D
Hou
Zhiyun
Z
Hou
Lantian
L