Journal
OPTICS EXPRESS
Volume 29, Issue 10, Pages 15664-15677Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.427149
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Funding
- Shenzhen Research Foundation [JCYJ20170413152328 742]
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This paper proposes a new type of broadband single-polarization single-mode hollow core anti-resonant photonic crystal fiber (HC-ARPCF) for polarization maintaining and high-power laser systems. By optimizing the design parameters, the fiber achieves SPSM behavior with a large loss difference, as well as a large effective mode area and near-zero dispersion properties across the entire operation bandwidth.
A broadband single-polarization single-mode (SPSM) hollow core anti-resonant photonic crystal fiber (HC-ARPCF) is proposed and analyzed by the finite element method in this paper. The HC-ARPCF design consisted of outer semicircular cladding tubes and inner circular cladding tubes. The SPSM behavior is achieved through controlling the effective material absorption loss (EWIL) by loading epsilon negative (ENG) material in the selected semicircular cladding tubes. Optimization of the configuration parameters is conducted to yield a large loss difference (LD) between one of the two orthogonally polarized fundamental modes and all the other unwanted modes. Therefore, only one desired mode will exist after a proper propagation distance, i.e., SPSM guidance. Specially, the optimal design provides a 288 nm (from 1408 nm to 1676 nm and from 1680 nm to 1700 nm) bandwidth in terms of 40 dB/m minimum LD (MLD) and 168 nm (from 1452 nm to 1620 nm) bandwidth in terms of 100 dB/m MLD. Furthermore, this fiber also exhibits a large effective mode area and near-zero dispersion properties over the entire operation bandwidth. The proposed HC-ARPCF may find its applications in polarization maintaining and high-power laser systems. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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