Investigation of Spectral Properties of DBR-Based Photonic Crystal Structure for Optical Filter Application

Ahmed, Umair; Khan, Yousuf; Ehsan, Muhammad Khurram; Amirzada, Muhammad Rizwan; Ullah, Naqeeb; Khatri, Abdul Rafay; Rehman, Atiq Ur; Butt, Muhammad Ali

doi:10.3390/cryst12030409

Cited by 9 publications

(8 citation statements)

References 28 publications

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“…The authors reported a 40 nm tuning (625-665 nm) for an applied maximum voltage of 50 V [26]. A distributed Bragg reflector-based (DBR) optical filter working as an alternative to the well-known Fabry-Pérot filters for a NIR region is proposed by Ahmed et al [27] and the authors reported a FWHM of around 0.016 of filtered wavelength. A similar structure working on a guided-mode resonance principal is also explored to work as a Fano filter device [28].…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

2022

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In this paper, a 4-N,N-dimethylamino-4′-N′-methyl-stilbazolium tosylate (DAST) material assisted one-dimensional photonic-crystal-based (1D-PhC) tunable optical filter is presented. The design comprises a bilayer 1D-PhC structure having DAST as an electro-optic material. The device parameters are configured to filter out the 632.8 nm wavelength from the reflection spectrum. The analysis shows that by illuminating the device with poly-chromatic light at an incident angle of 45.07∘, the filtered wavelength exhibits transmission maxima having FWHM of less than 1nm. The analytical results also demonstrate the post fabrication 60 nm electrical tuning of the filtered wavelength by using only ±5 V applied potential. The structure also exhibits a very stable filter response up to 40% variations in optical thickness. Thus, the proposed design possesses the advantage in terms of low voltage wavelength tuning, stable response, easy fabrication and integration capability in integrated circuits.

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Section: Introductionmentioning

confidence: 99%

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

2022

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“…Similarly, photonic crystals (PhCs) are also one of the most significant contenders serving as nanostructures that are capable of controlling light at wavelength scales [ 14 ]. PhCs are found in nature [ 15 ] and can be designed and fabricated artificially as per the specification of the device, i.e., optical sensors [ 16 ], nanowires [ 17 ], DBRs [ 18 ], waveguides [ 19 ], and optical filters [ 20 ]. However, recently, the localized surface plasmon polariton (LSPP) has gained the attention of researchers both in the field of academia and industry due to their nature of high sensitivity [ 21 ] and simplified materials usage [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Plasmonic Perfect Absorber Utilizing Polyhexamethylene Biguanide Polymer for Carbon Dioxide Gas Sensing Application

et al. 2023

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In this paper a perfect absorber with a photonic crystal cavity (PhC-cavity) is numerically investigated for carbon dioxide (CO2) gas sensing application. Metallic structures in the form of silver are introduced for harnessing plasmonic effects to achieve perfect absorption. The sensor comprises a PhC-cavity, silver (Ag) stripes, and a host functional material—Polyhexamethylene biguanide polymer—deposited on the surface of the sensor. The PhC-cavity is implemented within the middle of the cell, helping to penetrate the EM waves into the sublayers of the structure. Therefore, corresponding to the concentration of the CO2 gas, as it increases, the refractive index of the host material decreases, causing a blue shift in the resonant wavelength and vice versa of the device. The sensor is used for the detection of 0–524 parts per million (ppm) concentration of the CO2 gas, with a maximum sensitivity of 17.32 pm (pico meter)/ppm achieved for a concentration of 366 ppm with a figure of merit (FOM) of 2.9 RIU−1. The four-layer device presents a straightforward and compact design that can be adopted in various sensing applications by using suitable host functional materials.

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“…They exhibit different phenomena of light in terms of reflection, refraction, diffraction, and total internal reflection [14]. PhCs can be created artificially to design, produce and achieve what is required of a certain component or a device in the existing world [15].…”

Section: Introductionmentioning

confidence: 99%

A 3-Dimensional Modelling of the Optical Switch Based on Guided Mode Resonances in Photonic Crystals

Rehman¹,

Khan²,

Irfan³

et al. 2023

Preprint

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Optical switching is an essential part of photonic integrated circuits and the focus of research at the moment. In this research, an optical switch design working on the phenomenon of the guided-mode resonances in 3D photonic crystals-based structure is reported. The optical-switching mechanism is studied in a dielectric slab-waveguide-based structure operating in the near-infrared range in a telecom window of 1.55 µm. The mechanism is investigated by interference of two signals, i.e., the data signal and the control signal. The data signal is coupled into the optical structure and filtered utilizing guided-mode resonance, whereas, the control signal is index guided in the optical structure. The amplification or de-amplification of the data signal is controlled by tuning the spectral properties of the optical sources and structural parameters of the device. The parameters are optimized first using a single-cell model with periodic boundary conditions and later in a finite 3D-FDTD model of the device. The numerical design is computed in an open-source Finite Difference Time Domain simulation platform. Optical amplification in the range of 13.75 % is achieved in the data signal with a decrease in the linewidth up to 0.0079 µm and a quality factor of 114.58. The proposed device presents great potential in the field of photonic integrated circuits, biomedical technology, and programmable photonics.

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Investigation of Spectral Properties of DBR-Based Photonic Crystal Structure for Optical Filter Application

Cited by 9 publications

References 28 publications

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

Performance Analysis of DAST Material-Assisted Photonic-Crystal-Based Electrical Tunable Optical Filter

Plasmonic Perfect Absorber Utilizing Polyhexamethylene Biguanide Polymer for Carbon Dioxide Gas Sensing Application

A 3-Dimensional Modelling of the Optical Switch Based on Guided Mode Resonances in Photonic Crystals

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