Design of highly nonlinear octagonal photonic crystal fiber with near-zero flattened dispersion at 1.31 mu m waveband

作者：Namihira, Yoshinori^*; Liu, Jingjing; Koga, Taito; Begum, Feroza; Hossain, Md. Anwar; Zou, Nianyu; Kaijage, Shubi F.; Hirako, Yuki; Higa, Hiroki; Islam, Md. Asraful

来源：Optical Review, 2011, 18(6): 436-440.

DOI：10.1007/s10043-011-0082-3

• photonic crystal fiber (PCF)
• optical coherence tomography (OCT)
• finite difference method (FDM)
• nonlinear coefficient
• effective area (A(eff))
• chromatic dispersion (D)
• supercontinuum (SC)
• effective index (n(eff))

This paper presents a highly nonlinear octagonal photonic crystal fiber (HN-OPCF) with a Ge-doped core for dental optical coherence tomography (OCT) applications. The simulation results show that a nonlinear coefficient of 56.3W(-1) km(-1) and the flattened dispersion of less than -1:0 ps/(nm center dot km) are obtained in 75 nm waveband (1265-1340 nm). Owing to its high nonlinear coefficient and flattened dispersion, the HN-OPCF is expected to be suitable for supercontinuum generation, which is very important in OCT applications. The numerical simulation results demonstrate that the proposed HN-OPCF can generate wideband supercontinuum.

• 出版日期2011-11
• 单位大连工业大学