Investigation of rectangular solid-core photonic crystal fiber as temperature sensor

Dhara, Papiya; Singh, Vinod Kumar

doi:10.1007/s00542-020-04927-1

Cited by 12 publications

(6 citation statements)

References 24 publications

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“…Two large holes are designed to facilitate the filling of methane sensitive film and to form a size difference with the vertical holes to enhance birefringence. In recent years, the fabrication techniques for PCF [ [16][17][18][19][20][21][22] have advanced rapidly and matured significantly. Therefore, the difficulty in preparing the proposed sensor lies in filling the cryptophane-A film in two large air holes.…”

Section: Design Of the Sensormentioning

confidence: 99%

A sensitive methane gas sensor based on sagnac interferometer with a cryptophane-A film-coated birefringent photonic crystal fiber : design and FEM simulation

Li,

Chen,

et al. 2024

Phys. Scr.

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As being sensitive to methane gas, cryptophane-A is widely used in fiber optic methane gas sensors. In order to further improve the sensitivity, a Sagnac interference (SI) was constructed with a cryptophane-A film coated birefringent photonic crystal fiber (PCF) to realize the methane gas sensing. Cryptophane-A film absorbs the methane gas and as a result its refractive index decreases linearly with the increasing of methane gas concentration. Simulation results utilizing the finite element method demonstrate that sensitivity reaches 124.4 nm/% when the methane concentration ranges from 0% to 3.5%. The high sensitivity performance ensures a candidate of the designed sensor in early warning of methane gas leakage.

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Section: Design Of the Sensormentioning

confidence: 99%

A sensitive methane gas sensor based on sagnac interferometer with a cryptophane-A film-coated birefringent photonic crystal fiber : design and FEM simulation

Li,

Chen,

et al. 2024

Phys. Scr.

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“…Such leakage is characterized by confinement loss, which can be deduced from (A. M. I. Aaidi, et al., 2021; A. Habib, et al., 2021),

{L}_{c}=8.686k\,Im\left({n}_{\text{eff}}\right)

where k = 2π/λ is a free space wave number, and Im ( n eff ) refer to imaginary part of n eff . The surface of an optical pulse propagates at the group velocity ( v g ) that depends on the frequency or wavelength whereas the parameter β 2 indicates the dispersion of the group velocity and it is highly involved in the broadening of an optical pulse (T. L. Courtney, et al., 2021; Dhara & Singh, 2021). This process is generally known as group‐velocity dispersion (GVD) and β 2 is termed as GVD parameter.…”

Section: Proposed Design Of Fused Photonic Crystal Fibermentioning

confidence: 99%

Structural Analysis of Nano Core PCF With Fused Cladding for Supercontinuum Generation in 6G Networks

Anbazhagan,

Chandru,

Chinthaginjala

et al. 2023

Radio Science

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The Sixth Generation (6G) networks have identified the use of frequency range between 95 GHz and 3 THz with a targeted data rate of 1 Terabytes/second at the access network for holographic video applications. As is demands broadening of spectrum at the core network, this paper proposes a Supercontinuum Generation (SCG) through photonic crystal fiber (PCF) as it provides excellent broadening of the optical spectrum. Discussed in the paper is supercontinuum generation at high pumping power as per the standards specified by the International Telecommunications Union (ITU). The proposed PCF is designed with silicon nanocrystal core and the cladding microstructures is arranged in a fusion approach to effectively optimize the optical parameters such as dispersion, nonlinearity, birefringence, group velocity dispersion, and confinement loss. The fused cladding comprises of a flower‐cladding assembly in which air‐holes arrangement is inspired from petals in a pleated structure. Such arrangement is shown here to provide high nonlinearity and negative dispersion for high power supercontinuum generation. The novel nanocore assembly with improved structural constraints delivers a non‐linearity of 6.37×106 W‐1km‐1 and a negative dispersion of ‐142.1 (ps/nm‐km) at 1550 nm. Moreover, a supercontinuum spectrum is generated using different pulse widths ranging from 350 ps to 650 ps with 25kW pump power for PCF lengths of 10 mm and 15 mm.This article is protected by copyright. All rights reserved.

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“…Because of high symmetry, square PCFs play an important role in reaching near-zero ultra-flattened dispersion that contributes to SC generation [24]. In comparison to triangular lattice PCF, a square one has a lower air-filling fraction which causes the lower field confinement and interesting dispersive property within 1.2-1.8 µm [25]. In this context, Lanh et al [8] demonstrated that C 6 H 5 NO 2 -core PCF in a square lattice has lower attenuation compared to circular and hexagonal lattices.…”

Section: Introductionmentioning

confidence: 99%

“…Over the years, many research works related to the use of square lattices have been published [25][26][27][28]. As far as we know, there are not many investigations on SC generation in these PCFs.…”

Section: Introductionmentioning

confidence: 99%

Low peak power broadband supercontinuum spectra generated in a square lattice toluene-core photonic crystal fiber with different air hole diameters

Van¹,

Tran²

2023

Laser Phys.

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This study shows that it is possible to achieve a very large supercontinuum spectral broadening with a peak power hundreds of times lower than in previous publications. We can achieve by using a square lattice toluene-core photonic crystal fiber. With the heterogeneity in the diameter of air holes, our new design allows simultaneous optimization of characteristic quantities to ensure flat near-zero dispersion, small effective mode area, and low attenuation for efficient spectral broadening. Supercontinuum generation (SC) of proposed PCFs has been numerically simulated and studied under different pump source parameters. The first fiber with a lattice constant of 1.0 μm and filling factor of 0.65 operates in all-normal dispersion. It generates broadband of 1.045 μm by a pump pulse with a central wavelength of 1.3 μm, 40 fs duration, and energy of 18 pJ (corresponding peak power of 0.45 kW). Besides, two octave-spanning of the SC spectrum in the wavelength range of 0.775–4.3 μm are formed in the second fiber with an input pulse whose optical properties are 1.55 μm wavelength, 100 fs duration, and energy of 55 pJ (0.45 kW of the peak power). The lattice constant of second fiber is 2.0 μm and the filling factor is 0.3. They would be good candidates for all-fiber SC sources operating with low-power pump lasers. This would be a as cost-effective alternatives to glass core fibers.

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Investigation of rectangular solid-core photonic crystal fiber as temperature sensor

Cited by 12 publications

References 24 publications

A sensitive methane gas sensor based on sagnac interferometer with a cryptophane-A film-coated birefringent photonic crystal fiber : design and FEM simulation

A sensitive methane gas sensor based on sagnac interferometer with a cryptophane-A film-coated birefringent photonic crystal fiber : design and FEM simulation

Structural Analysis of Nano Core PCF With Fused Cladding for Supercontinuum Generation in 6G Networks

Low peak power broadband supercontinuum spectra generated in a square lattice toluene-core photonic crystal fiber with different air hole diameters

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