2D Photonic Crystal Cantilever Resonator Pressure Sensor

Bahaddur, Indira; Tejaswini, M R; C, Santhosh Kumar T; Sharan, Preeta; Panigrahi, Suvasini

doi:10.1109/wrap47485.2019.9013843

Cited by 6 publications

(1 citation statement)

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“…More recently, Indira Bahaddur et al proposed a pressure sensor using a point defect created in the photonic crystal waveguides with a triangular lattice in slab-based structures in air holes, which provides a high-quality factor of about 5355.92 with a dynamic range of 5 GPa pressure in 2019. However, this proposed sensor's sensitivity is not mentioned and resonance wavelength shift associated with increasing pressure was relatively narrow, ranging from 1.4461 nm to 1.the shift in the resonance wavelength when the pressure value increases is very narrow between 1446.1 nm to 14592.5 nm [25]. These proposed sensor's approach offers its own advantages and challenges, and further investigation is required to optimize these designs to potentially overcome their limitations.…”

Section: Introductionmentioning

confidence: 98%

Pressure sensor based on two-dimensional photonic crystal ring resonator

Gupta,

Paltani,

Tripathi

2023

Phys. Scr.

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This paper proposes a novel pressure sensor utilizing a two-dimensional photonic crystal (2DPC) based on a ring resonator design. The sensor consists of a square ring resonator that is connected to two photonic crystal waveguides. The photonic crystal is comprised of a square lattice of circular Silicon dielectric rods with air serving as a background. The proposed sensor operates within a pressure range of 0 to 6 GPa, corresponding to a wavelength range of 1554 nm to 1569 nm. The band structures and transmission characteristics of the proposed sensor are studied using the plane wave expansion (PWE) and finite-difference time-domain (FDTD) methods. The normalized transmission spectra of the sensor are observed by varying parameters such as the refractive index, radius, lattice constant, and pressure value, resulting in corresponding wavelength shifts. The proposed sensor design offers a compact size, a wide dynamic range of 6 GPa pressure, and a high sensitivity of 3 nm/GPa. These properties make it highly suitable for a range of applications such as high-pressure or stress-sensing, medical applications, and long pipeline strain monitoring.

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Section: Introductionmentioning

confidence: 98%

Pressure sensor based on two-dimensional photonic crystal ring resonator

Gupta,

Paltani,

Tripathi

2023

Phys. Scr.

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A Comparative Analysis of Pressure Sensing Parameters for Two Dimensional Photonic Crystal Sensors Based on Si and GaAs

Dinodiya¹,

Bhargava²

2021

Silicon

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A pressure sensor based on two dimensional photonic crystal structure is presented. The structure considered for sensing is a lattice of air holes surrounded by semiconductor material. A waveguide with central microcavity is formed by filling air holes with semiconductor material. The sensing principle depends upon the shifting of central wavelength of peak towards higher wavelength region when the pressure is raised. The proposed pressure sensor can work in the range 0-5 GPa. Using this structure, two semiconductors, Si and GaAs, have been taken for analysis. It is found that shifting of resonance wavelength with pressure is more pronounced in GaAs than Si. In the dynamic range 0-5 GPa, sensitivity for sensor with Si is estimated as 1.674 nm/GPa while it is 17.00 nm/GPa for sensor with GaAs. The quality factor and figure of merit (FOM) is also found to be higher for GaAs sensor.

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