ArticleOptics express2019
Multi-slot photonic crystal cavities for high-sensitivity refractive index sensing.
Article in Optics express, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Zero-crosstalk silicon photonic refractive index sensor with subwavelength gratings.Nano convergence · 2024Article
- A Review of Photonic Sensors Based on Ring Resonator Structures: Three Widely Used Platforms and Implications of Sensing Applications.Micromachines · 2023Review
- Sensitivity Improvement of Multi-Slot Subwavelength Bragg Grating Refractive Index Sensors by Increasing the Waveguide Height or Suspending the Sensor.Sensors (Basel, Switzerland) · 2022Article
- Numerical Study of Fabrication-Related Effects of the Structural-Profile on the Performance of a Dielectric Photonic Crystal-Based Fluid Sensor.Materials (Basel, Switzerland) · 2022Article
- Critically coupled Fabry-Perot cavity with high signal contrast for refractive index sensing.Scientific reports · 2021Article
- Elongated-Hexagonal Photonic Crystal for Buffering, Sensing, and Modulation.Nanomaterials (Basel, Switzerland) · 2021Article
- Ultra-low mode volume on-substrate silicon nanobeam cavity.Optics express · 2019Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
We present the design, fabrication, and characterization of a multi-slot photonic crystal (PhC) cavity sensor on the silicon-on-insulator platform. By optimizing the structure of the PhC cavity, most of the light can be distributed in the lower index region; thus, the sensitivity can be dramatically improved. By exposing the cavities to different mass concentrations of NaCl solutions, we obtained that the wavelength shift per refractive index unit (RIU) for the sensor is 586 nm/RIU, which is one of the highest sensitivities achieved in a non-suspended cavity. Furthermore, the size of the sensing region of the reported sensor is only 22.8 μm × 1.5 μm, making the high-sensitivity PhC cavity sensor attractive for the realization of on-chip sensor arrays.
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Registered trials
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