Porous photonic-crystal fiber with near-zero ultra-flattened dispersion and high birefringence for polarization-maintaining terahertz transmission

Optik ◽  
2020 ◽  
Vol 207 ◽  
pp. 163817 ◽  
Author(s):  
Yani Zhang ◽  
Lu Xue ◽  
Dun Qiao ◽  
Zhe Guang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining ◽  
Terahertz Transmission

scholarly journals A Highly Birefringent Photonic Crystal Fiber for Terahertz Spectroscopic Chemical Sensing

Sensors ◽  
2021 ◽  
Vol 21 (5) ◽  
pp. 1799
Author(s):  
Tianyu Yang ◽  
Liang Zhang ◽  
Yunjie Shi ◽  
Shidi Liu ◽  
Yuming Dong
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Chemical Sensing ◽  
Numerical Aperture ◽  
Wide Band ◽  
Relative Sensitivity ◽  
Chemical Sensitivity ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining

A photonic crystal fiber (PCF) with high relative sensitivity was designed and investigated for the detection of chemical analytes in the terahertz (THz) regime. To ease the complexity, an extremely simple cladding employing four struts is adopted, which forms a rectangular shaped core area for filling with analytes. Results of enormous simulations indicate that a minimum 87.8% relative chemical sensitivity with low confinement and effective material absorption losses can be obtained for any kind of analyte, e.g., HCN (1.26), water (1.33), ethanol (1.35), KCN (1.41), or cocaine (1.50), whose refractive index falls in the range of 1.2 to 1.5. Besides, the PCF can also achieve high birefringence (∼0.01), low and flat dispersion, a large effective modal area, and a large numerical aperture within the investigated frequency range from 0.5 to 1.5 THz. We believe that the proposed PCF can be applied to chemical sensing of liquid and THz systems requiring wide-band polarization-maintaining transmission and low attenuation.

A Novel High-Birefringent Photonic Crystal Fiber and its Polarization Maintaining Properties

2013 ◽  
Vol 760-762 ◽  
pp. 185-189
Author(s):  
Jian Hui Zeng ◽  
Xu You Li ◽  
Wen Bin Hu
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Theoretical Method ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Vector Finite Element Method ◽  
Vector Finite Element ◽  
Polarization Maintaining ◽  
Modal Field ◽  
Full Vector

A novel high-birefringent photonic crystal fiber (PCF) was proposed and analyzed by full-vector finite element method (FEM). The modal field and birefringence properties were investigated. All of air holes in proposed PCF are round, and their diameters are the same. It is greatly reduce the difficulty of fabrication. According to the results of numerical analysis, it can be observed that the mode birefringence of this novel PCF can be easily achieve the order of 10-3at 1.55μm. This research provides effective theoretical method for the fabrication, development and construction of high-birefringence photonic crystal fiber.

A Kind of Novel Dual-Core High Birefringence Photonic Crystal Fiber

2014 ◽  
Vol 1044-1045 ◽  
pp. 3-7
Author(s):  
Yu Wei Sun ◽  
Yu Kun Bai
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Structural Parameters ◽  
Chromatic Dispersion ◽  
Coupling Length ◽  
The Novel ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Polarization Maintaining ◽  
Dual Core

A dual-core photonic crystal fiber (PCF) with high birefringence, short coupling length and broadband flat dispersion is proposed in the paper. The symmetry of the original symmetric structure composed of hexagonally distributed air holes is distorted by replacing the innermost 12 air holes with 6 elliptical air holes. The characteristics of the dual-core PCF such as birefringence, coupling length and chromatic dispersion are analyzed by tuning its structural parameters. The results demonstrated that the dual-core PCF exhibits simultaneously a birefringence of up to 10-2, a coupling length of 68.178 for the x-polarization and 74.825 for the y-polarization, and a broadband flat dispersion ranging from 1.1 to 1.6. The novel dual-core PCF may find applications in polarization-maintaining fibers and fiber-based polarization beam splitters/couplers with broadband flat dispersion.

High Birefringence and Negative Dispersion Effect of Hybrid-Core Photonic Crystal Fiber

2012 ◽  
Vol 566 ◽  
pp. 599-603
Author(s):  
Ding Jie Xu ◽  
Hong Ru Song ◽  
Wei Wang ◽  
Yue Fan
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Structure Characteristics ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Negative Dispersion ◽  
Vector Finite Element Method ◽  
Vector Finite Element ◽  
Polarization Maintaining Fiber ◽  
Polarization Maintaining

A novel type of hybrid-core photonic crystal fiber is proposed, whose core is composed of center-directionally decrescent air holes arrayed as pentagonal and an octagonal structure. Characteristics of the proposed PCF are analyzed theoretically by using all vector finite element method (V-FEM). Results show that high-birefringence and negative dispersion are obtained over the wavelength range from 0.8µm to 1.8µm, and the maximum of birefringence reaches 1.36×10-2 and negative dispersion achieves -600 ps•nm-1•km-1~-60 ps•nm-1•km-1, which will fulfill the requirement of high-birefringence polarization maintaining fiber fabricating and wideband dispersion compensating.

Nonlinear photonic crystal fiber with high birefringence made of silicate glass

2006 ◽  
Author(s):  
Przemyslaw Szarniak ◽  
Matteo Foroni ◽  
Ryszard Buczynski ◽  
Dariusz Pysz ◽  
Piotr Wasylczyk ◽  
...  
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Silicate Glass ◽  
High Birefringence ◽  
Crystal Fiber ◽  
Nonlinear Photonic Crystal
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