Abstract

We present the structural design and polarization-maintaining performance of solid-core anti-resonant fiber with two nested circular tubes in 3 μm wavelength for the first time, to the best of our knowledge. Numerical simulation results indicated that laser fundamental mode could be obtained by filling the specially designed fiber model with materials of different refractive indices to form the completely solid configuration. We calculated the bend loss of fiber to demonstrate the preferable birefringence performance and outstanding light-confining ability. With the structural deformations from resonant tubes, the birefringence coefficient was enhanced significantly from 2 × 10⁻⁵ to 6.93 × 10⁻⁵, which was of great importance in the polarization sensitive systems. In particular, when nested circular tubes were moved to introduce deformations, the confined loss difference in two orthogonal polarizations was calculated more than two orders of magnitude, which was the desirable result to promote the fabrication of the linear polarizer in 3 μm wavelength.

Hybrid structure polarization-maintaining hollow-core photonic bandgap fiber with anti-resonant tubes and silicon layers

Kailing Hu, Shuqin Lou, Haoqiang Jia, and Xin Wang
Opt. Express 30(23) 42035-42045 (2022)

Small-core hollow-core nested antiresonant nodeless fiber with semi-circular tubes

Yunhao Zhu, Wei Li, Fuyu Gao, Xiaobin Xu, and Ningfang Song
Opt. Express 30(12) 20373-20388 (2022)

Low-loss hollow-core silica fibers with adjacent nested anti-resonant tubes

Md. Selim Habib, Ole Bang, and Morten Bache
Opt. Express 23(13) 17394-17406 (2015)

High birefringence, single-polarization, low loss hollow-core anti-resonant fibers

Xingtao Zhao, Jingliang Xiang, Xuanrui Wu, and Zhiwei Li
Opt. Express 29(22) 36273-36286 (2021)

Wideband low confinement loss anti-resonant hollow core fiber with nested U-shape tube

Weiqin Zheng, Yuwen Qin, Ou Xu, Meng Xiang, Di Peng, Songnian Fu, and Jianping Li
Opt. Express 29(15) 24182-24192 (2021)