Hollow-core mode propagation in an isomeric nested anti-resonant fiber

Since the Appearance of Hollow-Core Photonic Bandgap Fiber (HC-PBF), it was Widely Concerned for its Excellent Characteristics. in Order to Study the Characteristics of the HC-PBF that can be Used in Resonator Fiber Optic Gyros (R-Fogs), the Model Structure of a Polarization-Maintaining HC-PBF was Built and its Performance was Simulated by Using the Finite Element Method (FEM). its Mode Field Distribution and Birefringence Characteristics were Obtained. the Influences of the Air Core and Cladding Structures on the Mode Field Distribution and Birefringence were Simulated and Analyzed Further. the Result Showed that there are both Core Mode and Surface Mode in the Structure we Built. by Adding Scattering Points into the Fiber Core, the Surface Mode can be Significantly Suppressed. by Matching the Size of Core and Air Holes around the Core, a Birefringence up to 8*10-4 were Obtained.

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PLASTIC PHOTONIC CRYSTAL FIBERS DRAWN FROM STACKED CAPILLARIES

Journal of Nonlinear Optical Physics & Materials ◽

10.1142/s0218863504002201 ◽

2004 ◽

Vol 13 (03n04) ◽

pp. 519-523 ◽

Cited By ~ 3

Author(s):

BU-GON SHIN ◽

JOENG-HO PARK ◽

JANG-JOO KIM

Keyword(s):

Photonic Crystal ◽

Photonic Crystal Fibers ◽

Single Mode ◽

Solid Core ◽

Mode Propagation ◽

Hollow Core ◽

Hexagonal Symmetry ◽

Propagation Of Light ◽

Crystal Fibers ◽

Core Polymer

Solid and hollow core polymer photonic crystal fibers (PPCFs) were fabricated by drawing preforms of stacked capillaries made of polystyrene (PS). The PPCFs consist of a solid PS core or a hollow core surrounded by periodic air holes of a hexagonal symmetry running along the length of fiber. We have demonstrated the single mode propagation of light through the solid core PPCF at wavelengths of 1.33 and 1.55 μm.

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Phase Dislocations in Hollow Core Waveguides

Fibers ◽

10.3390/fib9100059 ◽

2021 ◽

Vol 9 (10) ◽

pp. 59

Author(s):

Andrey Pryamikov

Keyword(s):

Electric Fields ◽

Rotational Symmetry ◽

Vortex Formation ◽

Hollow Core ◽

Core Mode ◽

Field Phase ◽

The Core ◽

Light Localization ◽

Air Core ◽

Basic Concepts

This paper discusses the basic concepts of phase dislocations and vortex formation in the electric fields of fundamental air core mode of hollow core waveguides with specific types of rotational symmetry of the core‐cladding boundary. Analysis of the behavior of the electric field phase in the transmission bands shows that the mechanism of light localization in the hollow core waveguides with discrete rotational symmetry of the core-cladding boundary cannot be completely described by the ARROW model. For an accurate description of the phase behavior, it is necessary to account for phase jumps of the magnitude of π when passing through the phase dislocations.

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Single-mode propagation in triangular tube lattice hollow-core terahertz fibers

Optics Communications ◽

10.1016/j.optcom.2009.11.025 ◽

2010 ◽

Vol 283 (6) ◽

pp. 979-984 ◽

Cited By ~ 18

Author(s):

L. Vincetti

Keyword(s):

Single Mode ◽

Mode Propagation ◽

Hollow Core

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Analytical Formulas for Dispersion and Effective Area in Hollow-Core Tube Lattice Fibers

Fibers ◽

10.3390/fib9100058 ◽

2021 ◽

Vol 9 (10) ◽

pp. 58

Author(s):

Lorenzo Rosa ◽

Federico Melli ◽

Luca Vincetti

Keyword(s):

Fundamental Mode ◽

Good Accuracy ◽

Group Velocity Dispersion ◽

Scaling Law ◽

Effective Area ◽

Confinement Loss ◽

Hollow Core ◽

Core Mode ◽

Core Tube ◽

Analytical Formulas

In this work, we propose analytical formulas for the estimation of dispersion properties and effective area of the fundamental mode of hollow-core inhibited coupling fibers with a microstructured cladding composed by a ring of dielectric tubes. The formulas are based on a model which has already been successfully applied to the estimation of confinement loss. The model takes into account the effects of the coupling of the fundamental core mode with the cladding modes in the context of the single-tube approximation. Effective index, group velocity dispersion, and effective area of the fundamental mode are estimated and compared with the results obtained from numerical simulations, by considering ten different fibers. The comparison shows a good accuracy of the proposed formulas, which do not require any tuning of fitting parameters. On the basis of the analysis carried out, a scaling law relating the effective area to the core radius is also given. Finally, the formulas give a good estimation of the same parameters of other Hollow-core inhibited coupling fibers, such as nested, ice-cream, and kagome fibers.

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Second-Order Vector Mode Propagation in Hollow-Core Antiresonant Fibers

Micromachines ◽

10.3390/mi10060381 ◽

2019 ◽

Vol 10 (6) ◽

pp. 381 ◽

Cited By ~ 1

Author(s):

Lili Li ◽

Limin Xiao

Keyword(s):

Optical Tweezers ◽

Short Pulse ◽

Transmission Band ◽

Second Order ◽

Confinement Loss ◽

Coupling Mechanism ◽

Mode Propagation ◽

Hollow Core ◽

Vector Mode ◽

Ultra Short Pulse

Second-order vector modes, possessing doughnut-shaped intensity distribution with unique polarization, are widely utilized in material micromachining, optical tweezers, and high-resolution microscopy. Since the hollow-core fiber can act as a flexible and robust optical waveguide for ultra-short pulse delivery and manipulation, high-order vector modes guided in hollow-core fibers will have huge potential in many advanced applications. We firstly reveal that a second-order vector mode can be well guided in a hollow-core antiresonant fiber with the suppression of the fundamental mode and other second-order vector modes at the red side of transmission band. We interpret our observation through a phase-matched coupling mechanism between core modes and coupled cladding modes. A single second-order vector mode such as TE01, TM01, or HE21 can be guided with low confinement loss at specific wavelengths with appropriate structure parameters. Our proposed hollow-core fibers have a modal engineering function which will open up a new avenue toward the single second-order vector mode propagation and its fiberized applications.

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