Design of wideband single-polarization single-mode photonic crystal fiber

作者:Zhang, Xinyan*; Yuan, Xiao; Zou, Kuaisheng; Zhang, Guiju; Zhang, Xiang; Jiang, Keming; Wu, Dengsheng
来源:Optical Engineering, 2013, 52(6): 065006.
DOI:10.1117/1.OE.52.6.065006

摘要

A novel structure of single-polarization single-mode photonic crystal fiber (SPSM-PCF) is proposed by introducing two large semicircular holes on both sides of the core region. The characteristics of SPSM fibers are numerically analyzed using the finite-element method. The SPSM operating range can be adjusted with the parameters of the elliptical ratio. and the spacing Lambda(1) between the semicircular hole and the adjacent circular hole. The SPSM bandwidth of about 0.7 mu m and operating range from 1.0 to 1.7 mu m for the PCF have been obtained with the silica-air holes structure. An all-solid PCF structure is proposed, and the SPSM bandwidth of about 0.30 mu m is predicted. With the increase in refractive index difference between the substrate and filling materials the SPSM operating range is blue-shifted, and with the decrease in the refractive index difference the bandwidth of the SPSM is reduced.