Simulation of a refractive index sensor based on the Vernier effect and a cascaded PANDA and Mach–Zehnder interferometer

Azizi, Bahram; Shabankareh, Mohammad Amir Ghasemi; Farmani, Ali

doi:10.1007/s10825-021-01726-3

Cited by 15 publications

(2 citation statements)

References 98 publications

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“…Year RI Sensitivity (nm/RIU) Yongjiao Wen et al [33] 2019 500 Souvik Ghosh et al [34] 2019 437.3 La Xiang et al [35] 2020 494 Bahram Azizi et al [36] 2021 600 Hongling Zhang et al [37] 2021 847 Our proposed sensors 2022 854.5…”

Section: Refmentioning

confidence: 99%

Refractive Index Sensing Performances of a Mid-Infrared Asymmetric Mzi Based on Suspended Gaas Waveguides

Wang¹,

Ma²,

Ma³

et al. 2022

PIER M

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A novel mid-infrared (MIR) biochemistry sensor using two suspended GaAs waveguides based on an asymmetric Mach-Zender Interferometer (MZI) is proposed. The propagation properties and refractive index (RI) sensing performances of MZI are investigated by the finite element method (FEM). The simulation results show that the maximum waveguide sensitivities (S wg ) of the TE and TM modes in the suspended GaAs waveguide are ∼ 1.2 and ∼ 1.0. This design of the GaAs waveguide using the suspension structure is to enhance the interaction between the vanishing field and measured material. The RI sensitivity of the asymmetric MZI structure increases with the length of the sensing arm, which can reach 854.5 nm/RIU with a Q of 208.2 after parameter optimization. The two arms of the MZI are designed as width-asymmetric structures to make the sensor more sensitive to the measured material. The asymmetric MZI sensing structure has high RI sensitivity and compact structure, which provides a feasible scheme for biochemical sensing.

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Section: Refmentioning

confidence: 99%

Refractive Index Sensing Performances of a Mid-Infrared Asymmetric Mzi Based on Suspended Gaas Waveguides

Wang¹,

Ma²,

Ma³

et al. 2022

PIER M

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“…The development of optical sensors to detect various biomolecules, viruses, and traces of hazardous gases is very important. Different kinds of optical sensors such as evanescent waveguides, Mach-Zehnder interferometers, optical fibers, slot waveguides, photonic crystals, and microring resonator-based sensors have been developed for the fast, sensitive, and selective detection of physical and chemical parameters in a surrounding medium [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. Among various kinds of optical sensors, optical microring resonators (MRR) are probably the most often used photonic integrated structures used as a sensing device due to their high sensitivity, compact size, fast and accurate response, and structural simplicity [17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Porous Silicon–Based Microring Resonator for Temperature and Cancer Cell Detection

2022

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In this article, a microring resonator sensor based on porous silicon is proposed for temperature and cancer cell detection, simultaneously. The porous behavior of silicon with a large internal surface area allows external materials to interact directly with the guided modes. The resonance wavelength in the transmission spectrum of the microring resonator is very sensitive to external environmental properties such as refractive index and temperature. The transmission characteristics of the proposed sensor were numerically determined by full vectorial finite element analysis. The achieved maximum sensitivity of the proposed sensor with optimized parameters was 150 pm/°C for an operational temperature range of 20–100°C and 284.0306 nm/RIU for operational cancer cell detection, respectively. The results presented here suggest the microring resonator sensor can be used in the fields of environment sensing, temperature sensing, chemical sensing, and biosensing.

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Integrating Vernier spectrum with Fano resonance for high sensitivity of an all-optical sensor

Aman

Noorden²,

Fajri³

et al. 2022

J Comput Electron

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Vernier and Fano resonances are promising approaches for enhancing the sensitivity of an alloptical sensor. A theoretical analysis was performed to integrate a Fano-like resonance shape with a Vernier resonance by considering the presence of partial reflective end facets at a double microring resonator waveguide. The system was developed based on scattering matrix and optical transfer function. The double and all-pass racetrack microring configurations were compared with and without the end facet at the waveguide to analyze the dynamic change of the output resonance spectrum. The spectrum were analyzed based on the free spectral range and resonance pattern. The resonator systems were applied to refractive index-based sensing protocol, which was operated by a shift of resonance wavelength with a change of refractive index. The sensitivity was optimized by varying the configuration parameters such as the radius of the ring, the distance between end facet, and the coupling coefficients. Integrating Vernier spectrum with Fano resonance improved the sensitivity for all-pass racetrack configuration by 5.16 % and the sensitivity for double racetrack configuration by 6.31 %. The recorded limit of detection (LOD) of double racetrack was 3.30 × 10 -5 .

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Simulation of a refractive index sensor based on the Vernier effect and a cascaded PANDA and Mach–Zehnder interferometer

Cited by 15 publications

References 98 publications

Refractive Index Sensing Performances of a Mid-Infrared Asymmetric Mzi Based on Suspended Gaas Waveguides

Refractive Index Sensing Performances of a Mid-Infrared Asymmetric Mzi Based on Suspended Gaas Waveguides

Porous Silicon–Based Microring Resonator for Temperature and Cancer Cell Detection

Integrating Vernier spectrum with Fano resonance for high sensitivity of an all-optical sensor

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