ArticleSensors (Basel, Switzerland)2022
Compact Slot Microring Resonator for Sensitive and Label-Free Optical Sensing.
Article in Sensors (Basel, Switzerland), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Evanescent wave-based optical biosensors for innovations, medical application and future perspectives.Journal of advanced research · 2026Review
- Harnessing fano-like line shape resonance in a rectangular waveguide for filtering applications.Scientific reports · 2026Article
- High sensitivity formalin detection in aqueous solutions using plasmonic multifunctional metal insulator metal nanoring based optical refractive index sensor platform.Scientific reports · 2026Article
- Supercell-enhanced multimodal plasmonic sensor for high-fidelity antigen detection via refractive index modulation.Scientific reports · 2025Article
- Evaluation of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) using a high figure-of-merit plasmonic multimode refractive index optical sensor.Scientific reports · 2024Article
- Optimizing an Optical Cavity-Based Biosensor for Enhanced Sensitivity.IEEE sensors journal · 2023Article
- Silicon-Based On-Chip Tunable High-Q-Factor and Low-Power Fano Resonators with Graphene Nanoheaters.Nanomaterials (Basel, Switzerland) · 2023Article
- Design of Suspended Slot Racetrack Microring Refractive Index Sensor Based on Polymer Nanocomposite.Polymers · 2023Article
- Highly Sensitive Liquid M-Z Waveguide Sensor Based on Polymer Suspended Slot Waveguide Structure.Polymers · 2022Article
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Authors and funding
6 authors.
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Abstract
A novel all-pass slot microring resonator (SMRR), intended for label-free optical biosensing based on silicon-on-insulator platforms, is proposed. The sensor consists of a bent asymmetric directional coupler and an asymmetric-slot microring waveguide. The appropriate slot width of 140 nm is identified by the three-dimensional finite-difference time-domain (3D-FDTD) method for better light-matter interaction in applications. According to numerical calculations, the SMRR sensor with a footprint of 10 µm × 10 µm has a concentration sensitivity of 725.71 pm/% for sodium chloride (NaCl) solutions. The corresponding refractive index sensitivity is 403 nm/RIU (refractive index unit), which is approximately six times greater than that of traditional microring resonator sensors. A low detection limit of 0.129% is also achieved. This SMRR is an excellent candidate for label-free optical biosensors due to its compact structure and excellent sensing capability.
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