A Theoretical Study On Dual Sensitive Mode Refractive Index Sensor Utilizing Fibonacci Sequence-based Aperiodic Photonic Crystals

Chowdhury, Uddipan; Nandy, Shivam; Mandi, Pushpak; Mukherjee, Rupam; Maity, Amit Ranjan; Kumar, Samir; Maji, Partha Sona

doi:10.1007/s11468-024-02366-6

Cited by 1 publication

(1 citation statement)

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“…Graphene embedded PhCs with quasi-periodic structures have also been extensively studied. And the study of Fibonacci sequence is particularly prominent, such as perfect narrow-band absorber [21], ultra-wide unidirectional infrared absorbor [22], dual sensitive mode refractive index sensor [23], resonant-wavelength tuning of one dimensional photonic crystal filter [24] and the filter based on nanocomposite material and plasma [25]. Additionally, other sequences have also aroused wide concern.…”

Section: Introductionmentioning

confidence: 99%

Tunable terahertz filter based on graphene photonic crystals with defective layers

Shen,

Hameed,

Qin

et al. 2024

Phys. Scr.

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In this paper, we design a high-precision tunable terahertz filter by using transfer matrix method. The filter structure mainly consists of graphene embedded photonic crystals (GPCs). The front part of the GPCs contain artificial synthetic material and air layer, the back part of the GPCs is composed by and periodic stack of isotropic dielectric slabs (MgF2) embedded with graphene sheets, where air defect layer is located in the middle of the GPC as a central layer. Our simulation reveals that graphene layer and air defective layer strongly affect the filter performance. Additionally, the influence of incidence angle of terahertz wave, thickness of air layer, the unit number of front periodic structure and chemical potential of the graphene sheets can also modulate the function of the filter. And the filter has strong stability when the temperature changes from 150K to 350K.The results indicate that single channel, dual and multiple channels filter in a narrow frequency can be obtained by optimizing the structure parameter.

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