Open AccessSingle-polarization single-mode hollow-core photonic-bandgap fiber with thin slab waveguide
Author(s) -
Yunhao Zhu,
Ningfang Song,
Fuyu Gao,
Xiaojun Xu
Publication year - 2021
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.438563
Subject(s) - optics , extinction ratio , materials science , bend radius , single mode optical fiber , polarization (electrochemistry) , photonic crystal fiber , resonator , insertion loss , optical fiber , optoelectronics , wavelength , physics , bending , chemistry , composite material
A novel single-polarization single-mode hollow-core photonic bandgap fiber with thin slab waveguide (TSW) was designed and simulated. Single-polarization guidance is achieved by the high loss of a polarized fundamental mode (FM) induced by mode coupling with a higher-order TE/TM mode of TSW and low loss of another polarized FM. We achieve a polarization loss ratio ∼ 46.9 dB, birefringence Δn ∼ 2.4 × 10 -4 , loss ∼ 35.9 dB/km and minimum higher-order mode extinction ratio > 15 dB. Moreover, the performance could be maintained when the guidance wavelength λ = 1.44 ∼ 1.56 µm and bending radius rc > 9 mm. The proposed model will be suitable for application as resonator sensing paths of miniaturized resonator fiber optic gyroscopes, high-performance interferometers, fiber lasers, frequency metrology, quantum communications, and laser-based gas sensing, etc.