Low loss and highly birefringent photonic crystal fibre for terahertz applications

Yakasai, Izaddeen Kabir; Abas, Pg Emeroylariffion; Suhaimi, Hazwani; Begum, Feroza

doi:10.1016/j.ijleo.2020.164321

Cited by 32 publications

(10 citation statements)

References 32 publications

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“…The amount of terahertz light absorbed by the background Zeonex per unit length is known as EML, and it may arise due to loss of material molecules resulting from heat generated from increased light‐matter interaction. EML is expressed as [6, 25]

α_{eff} = \sqrt{\frac{ε_{0}}{μ_{0}}} ()(, \frac{\int_{mat} n_{mat} {|bold-italicE|}^{2} α_{mat} d A}{2 \int_{All} S_{z} d A})

where

ε_{0}

and

μ_{0}

represent the permittivity and permeability of free space, respectively. n mat = 1.53 is the Zeonex's refractive index, E denotes the electric field of the fundamental mode and α mat = 0.2 cm −1 is the bulk material absorption loss.…”

Section: Simulation Methods and Numerical Synopsismentioning

confidence: 99%

“…High birefringence may be achieved by disrupting geometrical symmetry of the PCF, in this case, by introducing a large ellipse in the core region. Birefringence property is calculated using the following expression [25]

B = (||, n_{eff}^{x} - n_{eff}^{y})

where

n_{eff}^{x}

and

n_{eff}^{y}

denote the real components of the effective refractive index of x and y fundamental modes.…”

Section: Simulation Methods and Numerical Synopsismentioning

confidence: 99%

See 1 more Smart Citation

Modelling and simulation of novel liquid‐infiltrated PCF biosensor in Terahertz frequencies

Suhaimi

Yakasai

Abas

et al. 2020

IET Optoelectronics

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α_{eff} = \sqrt{\frac{ε_{0}}{μ_{0}}} ()(, \frac{\int_{mat} n_{mat} {|bold-italicE|}^{2} α_{mat} d A}{2 \int_{All} S_{z} d A})

where

ε_{0}

and

μ_{0}

Section: Simulation Methods and Numerical Synopsismentioning

confidence: 99%

B = (||, n_{eff}^{x} - n_{eff}^{y})

where

n_{eff}^{x}

and

n_{eff}^{y}

denote the real components of the effective refractive index of x and y fundamental modes.…”

Section: Simulation Methods and Numerical Synopsismentioning

confidence: 99%

Modelling and simulation of novel liquid‐infiltrated PCF biosensor in Terahertz frequencies

Suhaimi

Yakasai

Abas

et al. 2020

IET Optoelectronics

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“…The value of the confinement loss at 170 µm is found to be 1.87×10 -13 cm -1 and 2.46×10 -13 cm -1 for benzene and ethanol respectively. For the implementation of PCF, THz guided lightwave faces another loss named bending loss which can be determined by following equation [29],…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

Design and simulation of Zeonex Based Suspended Microstructure Photonic Crystal Fiber for Chemical Sensing Application

Islam

Ritu

Ullah

2023

Dhaka Uni. J. of Applied Sci. and Eng.

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Over the last few years for sensing applications in terahertz regime photonic crystal fiber (PCF) has gained attention quite extensively. The optical characteristics of photonic crystal fiber can be controlled by fine-tuning of the structural parameters like core radius and effecctive area. In this context, a terahertz sensor based on a hollow-core photonic crystal fiber has been developed for chemical identification in the terahertz frequency range with very low loss. The proposed structure contains hexagonal manner sectored suspension type cladding and hexagonal manner sectored core region, all the sector are formed by zeonex based struts. To investigate the optical characteristics of developed design, finite element method (FEM) based COMSOL multiphysics v.5.4a software has been used. The simulation result shows the sensitivity of 83.37% and 83.63% at the optimum condition in x-polarization mode for ethanol and benzene respectively with low effective material loss of 0.0291 cm−1 and low confinement loss of 1.87×10-13 cm-1. Moreover, the developed design implementation is possible in the existing fabrication method. Physical features and comparative performance analysis are also showed in this research. DUJASE Vol. 7 (2) 56-61, 2022 (July)

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“…The confinement loss is of the order of 10−3 dB/cm and the dispersion is 1.06±0.12 ps/THz/cm in the bandwidth of 0.9 to 1.3 THz. In 2020, Yakasai et al 10 . proposed a porous-core PCF based on an elliptical microcore structure.…”

Section: Introductionmentioning

confidence: 99%

Low-loss flexible terahertz photonic crystal fiber

Qian

Yang

et al. 2023

Opt. Eng.

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.This paper presents a hybrid porous-core flexible photonic crystal fiber (PCF), which has the potential for low-loss guidance of broadband terahertz (THz) waves at low THz bands. Here, the cyclic olefin polymer TOPAS is used for the main material to increase the flexibility of PCF. The central hybrid porous-core area contains a circular and hexagonal design, which reduces the loss of PCF. Simulation results show that the proposed fiber has a very low confinement loss of 3.47 × 10 − 6 dB / cm at 500 GHz operating frequency. The bending loss at a bending radius of 1 cm is as low as 3.2 × 10 − 4 dB / cm. The negligible modal loss facilitates the flexible application to THz systems. Moreover, the fabrication of the proposed PCF design is compatible with widely used methods and technologies, including stacking and drawing, extrusion and drilling. This newly proposed hybrid design of the porous-core region can be considered as an improved version in the research of THz porous-core waveguides.

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Low loss and highly birefringent photonic crystal fibre for terahertz applications

Cited by 32 publications

References 32 publications

Modelling and simulation of novel liquid‐infiltrated PCF biosensor in Terahertz frequencies

Modelling and simulation of novel liquid‐infiltrated PCF biosensor in Terahertz frequencies

Design and simulation of Zeonex Based Suspended Microstructure Photonic Crystal Fiber for Chemical Sensing Application

Low-loss flexible terahertz photonic crystal fiber

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