Suppression of the fundamental mode in a dual-mode photonic crystal fiber

Authors：Chen Cheng; Zhou Guiyao^*; Chen Yan; Hou Zhiyun; Xia Changming; Yuan Jinhui; Zhang Wei

Source：Optics Communications, 2015, 336: 235-239.

DOI：10.1016/j.optcom.2014.10.019

• Few-mode photonic crystal fiber (PCF)
• Index-matching
• Suppress fundamental mode
• Mode-division multiplexing (MUM)

For the first time, the fundamental mode of a dual-mode photonic crystal fiber (PCF) is suppressed by the index-matching between the core and cladding modes. The PCF designed proposes a new solution of selective excitation of second-order modes. The simulation results demonstrate that the confinement loss of the fundamental mode is higher than 1 dB/m, while the second-order modes are lower than 10(-4) dB/m in the C+L waveband. The high feasibility and low wavelength dependence make the fiber of great potential in the mode-division multiplexing (MDM) transmission.

• Institution
  华南师范大学; 燕山大学