Highly Birefringent, Low-Loss, and Near-Zero Flat Dispersion ENZ Based THz Photonic Crystal Fibers

Hossain, Md. Shahjalal; Razzak, S. M. Abdur; Markos, Christos; Hai, Nguyen Hoang; Habib, Md. Selim; Habib, M. Samiul

doi:10.1109/jphot.2020.2994108

Cited by 7 publications

(5 citation statements)

References 17 publications

(21 reference statements)

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“…Dispersion curve of the proposed PCF1 (S-KPCF) and PCF2 (C-KPCF) along X-Axis and Y-Axis has been shown in Fig 13. The figure describes that for S-KPCF the dispersion curve shows that the values of the dispersion are near zero and almost flat. The C-KPCF dispersion curve is also near zero and flat [18].…”

Section: F) Dispersionmentioning

confidence: 87%

Epsilon Near Zero (ENZ) Based Kagome Photonic Crystal Fiber for Low Loss, High Birefringence and Near Zero Flat Dispersion in THz Regime

Asaduzzaman¹,

Rehana²,

Aziz³

et al. 2021

Preprint

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In this research, we have proposed two novel types of Kagome PCFs one is slotted core PCF (S-KPCF) and another one is circular PCF (C-KPCF). FEM has been applied with boundary condition to investigate the optical properties of Proposed PCFs. HRS material along with Epsilon Near Zero (ENZ) material has been applied in core and TOPAS was used as background material. Numerical investigation takes place a wider frequency range for 0.8 THz to 2 THz. Slotted core PCF (S-KPCF) shows eminent birefringence of 2.98×10− 2, Lower EML of 0.232 cm− 1, lower confinement loss of 2.76×10− 8, Bending loss 10.76×10− 9, Total loss of 0.232cm− 1 at frequency 1THz. Besides circular core PCF (C-KPCF) shows eminent birefringence of 8.69×10− 2, Lower effective material loss of 0.746 cm− 1, lower confinement loss of 2.80×10− 7, Bending loss 7.76×10− 9, Total loss of 0.746cm− 1 at 1THz. Both PCFs show flat dispersion near zero (for S-KPCF is -0.997ps/nm/Km and for C-KPCF is -0.797ps/nm/Km) range. V-Parameter of both of the PCF indicates that both PCF is multimode PCF. Comparison of the proposed PCFs shows that C-KPCF shows better results than S-KPCF and both PCFs shows better results than previous PCFs.

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Section: F) Dispersionmentioning

confidence: 87%

Epsilon Near Zero (ENZ) Based Kagome Photonic Crystal Fiber for Low Loss, High Birefringence and Near Zero Flat Dispersion in THz Regime

Asaduzzaman¹,

Rehana²,

Aziz³

et al. 2021

Preprint

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“…As photonic information technology continues to develop, hollow PCF and multi-core PCF with different structures appear in different application fields, and PCF has become a research hotspot in the field of optics [18][19][20][21]. Because of its special optical guiding mechanism, PCF has advantages over ordinary single-mode fiber, such as infinite single mode, dispersion adjustable, large mode field, high nonlinearity, and high birefringence [22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

A Multi-Wavelength Thulium-Doped Fiber Laser Using a Photonic Crystal Fiber-Based Sagnac Loop

Yan

Han

et al. 2022

IEEE Photonics J.

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A multi-wavelength thulium-doped fiber laser incorporating a photonic crystal fiber (PCF) Sagnac loop was presented and experimentally demonstrated. In the laser cavity, the Sagnac loop mirror used a 0.5 m PCF as a comb filter. A nonlinear polarization rotation (NPR)-based 600 m single-mode fiber (SMF) was used to suppress the mode competition. By adjusting the polarization controllers (PCs), up to nine stable wavelength outputs near the 2 μm spectrum were obtained at room temperature with an optical signal-to-noise ratio (OSNR) of up to 30 dB. The channel spacing of this fiber laser is 4.88 nm, and the 10 dB bandwidth encompasses 1950.39 to 1989.43nm.

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“…Various THz waveguides have been recently reported, including polymer fibers [11][12][13][14][15][16][17], metal tube waveguides [18], metal wire waveguides [19], and so on. The polymer fibers can achieve low loss and good flexibility.…”

Section: Introductionmentioning

confidence: 99%

“…The polymer fibers can achieve low loss and good flexibility. The types of THz fibers include solid-core fibers [16], hollow-core fibers [11][12][13][14][15], and porous-core fibers [17]. Among them, the hollow-core fibers have attracted a lot of research interest due to the low loss and easy inner modification with functional materials.…”

Section: Introductionmentioning

confidence: 99%

“…A fiber filled with methanol (CH 3 OH) gas in the gas laser was used as the reaction cell to shrink the volume of THz sources [12]. A THz fiber selectively filled with Potassium Chloride (KCL) was reported as Epsilon-Near-Zero (ENZ) material to ensure near-zero flattened dispersion [13]. The α-lactose monohydrate powder was filled in the THz hollow-core Bragg fiber as resonant surface bio-sensor [14].…”

Section: Introductionmentioning

confidence: 99%

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Tunable Temperature Characteristic of Terahertz Bragg Fiber Filled with Liquid Water

Guo

Shi

et al. 2021

Applied Sciences

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Hollow-core terahertz (THz) fibers have attracted a lot of research interest due to the low loss and easy inner modification with functional materials. Liquid water has unique properties in the THz region and has been widely investigated in THz emission, sensing, and devices. In this paper, a hollow-core THz Bragg fiber with a water defect layer is proposed. The finite element method is used to verify and analyze the tunable temperature characteristic of the water-filled THz fiber. The numerical analysis results show that the confinement loss and the low-frequency side of the dip near 0.5 THz can be controlled by the temperature of the liquid water. The temperature sensitivity of the THz fiber is obtained at 0.09614 dB·m−1/K at 0.45 THz with a high core power fraction up to 98%. The proposed THz fiber has potential applications in THz interaction with liquid and THz tunable devices.

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Highly Birefringent, Low-Loss, and Near-Zero Flat Dispersion ENZ Based THz Photonic Crystal Fibers

Cited by 7 publications

References 17 publications

Epsilon Near Zero (ENZ) Based Kagome Photonic Crystal Fiber for Low Loss, High Birefringence and Near Zero Flat Dispersion in THz Regime

Epsilon Near Zero (ENZ) Based Kagome Photonic Crystal Fiber for Low Loss, High Birefringence and Near Zero Flat Dispersion in THz Regime

A Multi-Wavelength Thulium-Doped Fiber Laser Using a Photonic Crystal Fiber-Based Sagnac Loop

Tunable Temperature Characteristic of Terahertz Bragg Fiber Filled with Liquid Water

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