scholarly journals Study on the High-Birefringence Hollow-Core Anti-Resonant Fiber with Semicircular Cladding

2021 ◽  
Vol 2021 ◽  
pp. 1-10
Author(s):  
Shuo Liu ◽  
Yuanwei Li ◽  
Rui Ma ◽  
Linwan Zhao ◽  
Jiaqi lv ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Structural Parameters ◽  
Optical Devices ◽  
Hollow Core ◽  
Excellent Performance ◽  
Bending Properties ◽  
High Birefringence ◽  
Bending Loss ◽  
Polarization Maintaining ◽  
Simulation Results

For the purpose of satisfying the demands of polarization-maintaining fibers for fiber optic gyroscopes, this article proposes a semicircular cladding birefringent hollow-core anti-resonant fiber. The influence of structural parameters on the birefringence, loss, and bending loss of the fiber is studied. The simulation results demonstrate that at 1550 nm, the ultimate loss of the fundamental mode of x and y polarization is 1.76 dB/m and 0.93 dB/m, respectively. The birefringence can reach 1 × 10−4, and the wavelength range of birefringence greater than 10−4 can reach 60 nm. This indicates that it has excellent bending properties. The proposed optical fiber has excellent performance in polarization maintenance and can supply ideas for the research of high-precision fiber optic gyroscopes and other optical devices.

Fabrication and Characteristics of Elliptical-Holes and near Elliptical Core Hexangular Lattice Photonic Crystal Fibers Based on Polymer

2011 ◽  
Vol 279 ◽  
pp. 151-156 ◽  
Author(s):  
Fei Liu ◽  
Hong Yan Gao ◽  
Qiang Xu ◽  
Ya Ni Zhang
Keyword(s):  
Photonic Crystal ◽  
Photonic Crystal Fibers ◽  
Structural Parameters ◽  
Polarization Mode Dispersion ◽  
High Birefringence ◽  
Triangle Lattice ◽  
Elliptical Holes ◽  
Elliptical Core ◽  
Polarization Maintaining ◽  
Crystal Fibers

The polarization properties of a new structure of high birefringence polarization maintaining photonic crystal fibers were explored, which were consisted of elliptical-holes and near elliptical core triangle lattice of hexangular structure based on polymer. The optical birefringence and the first order polarization mode dispersion were studied based on a full-vector localized basis function method. The numerical results show that the polarization properties are strongly dependent on structural parameters of the PCF. Furthermore, the proposed fiber was fabricated based on MMA monomer polymerization method in situ. So the proposed PCFs may be useful in the field of high birefringence polarization-maintaining optical communication.

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.

Thin-diameter polarization maintaining hollow-core photonic bandgap fiber for fiber optic gyroscope

2020 ◽  
Vol 55 ◽  
pp. 102141
Author(s):  
Hongbo Cai ◽  
Fei Yu ◽  
MeiSong Liao ◽  
Xia Li ◽  
Longfei Wang ◽  
...  
Keyword(s):  
Fiber Optic ◽  
Photonic Bandgap ◽  
Hollow Core ◽  
Fiber Optic Gyroscope ◽  
Photonic Bandgap Fiber ◽  
Polarization Maintaining

MODELING OF FIBER-OPTIC COMMUNICATION CHANNEL FOR QUANTUM CRYPTOGRAPHIC SYSTEMS

2019 ◽  
pp. 90-95
Author(s):  
V. A. Minaev ◽  
I. D. Korolev ◽  
O. A. Kulish ◽  
A. V. Mazin
Keyword(s):  
Information Transmission ◽  
Information Transfer ◽  
Fiber Optic ◽  
Single Photon ◽  
Optical Devices ◽  
Energy Losses ◽  
Integrated Optical ◽  
Integrated Optical Devices ◽  
Fiber Optic Communication ◽  
Optic Communication

The existing methods of information delivery to the strategic and tactical management of many government agencies are expensive, not always reliable and efficient. Therefore, quantum cryptographic systems (QCS) have been actively developed in recent years. However, there are problems with the use of the QCS associated with the reliability of information transfer. First, the existing fiber-optic communication channels (FOCC) are not designed to transmit single-photon signals, which leads to the complexity of their cryptographic protection. The second is insufficiently methodically developed calculation of energy losses and errors in the evaluation of the characteristics of information transfer in FOCC QCS. In article the analysis of the energy loss factors in the classical fiber-optic channel is carried out and the additive loss formula is discussed in detail. Then we consider the fiber-optic channel of quantum information transmission with the use of integrated optical devices. The additive formula of optical losses in such a channel is discussed. The features of losses in integrated optical devices are shown. The features of quantum cryptographic system of information transmission are considered. As a result, the model of FOCC QCS taking into account energy losses is presented, which allows competently in theoretical terms and visualize the passage of information through modern quantum cryptographically secure telecommunications while providing control in government structures.

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.

scholarly journals Geometrical Scaling of Antiresonant Hollow-Core Fibers for Mid-Infrared Beam Delivery

Crystals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 420
Author(s):  
Ang Deng ◽  
Wonkeun Chang
Keyword(s):  
Structural Parameters ◽  
Transmission Band ◽  
Confinement Loss ◽  
Hollow Core ◽  
Core Size ◽  
Core Diameter ◽  
Mid Infrared ◽  
The Core ◽  
Tubular Type ◽  
Beam Delivery

We numerically investigate the effect of scaling two key structural parameters in antiresonant hollow-core fibers—dielectric wall thickness of the cladding elements and core size—in view of low-loss mid-infrared beam delivery. We demonstrate that there exists an additional resonance-like loss peak in the long-wavelength limit of the first transmission band in antiresonant hollow-core fibers. We also find that the confinement loss in tubular-type hollow-core fibers depends strongly on the core size, where the degree of the dependence varies with the cladding tube size. The loss scales with the core diameter to the power of approximately −5.4 for commonly used tubular-type hollow-core fiber designs.

High-sensitivity fiber optic magnetic field sensor based on lossy mode resonance and hollow core-offset structure

2021 ◽  
pp. 1-12
Author(s):  
Xue-Peng Jin ◽  
Hong-Zhi Sun ◽  
Shuo-Wei Jin ◽  
Wan-Ming Zhao ◽  
Jing-Ren Tang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Fiber Optic ◽  
High Sensitivity ◽  
Magnetic Field Sensor ◽  
Hollow Core ◽  
Field Sensor
Sign in / Sign up

Export Citation Format

Share Document