Plasmonic Waveguide Coupled Ring Cavity for a Non-Resonant Type Refractive Index Sensor
AbstractSensitive refractive index sensors with small footprints have been studied to allow the integration of a large number of sensors into a tiny chip for bio/chemical applications. In particular, resonant-type index sensors based on various micro/nanocavities, which use a resonant wavelength dependence on the refractive index of the analyte, have been developed. However, the spectral linewidth of the resonance, which becomes the resolution limit, is considerably large in plasmonic cavities due to the large absorption loss of metals. Therefore, there is demand for a new type of plasmonic refractive index sensor that is not limited by the linewidth of the cavity. We propose a new type of plasmonic index sensors consisting of a channel waveguide and a ring cavity. Two emissions from the ring cavity in both directions of the waveguide couple with a reflection phase difference depending on the length of a closed right arm with a reflecting boundary. Therefore, the output power dramatically and sensitively changes as a function of the refractive index of the analyte filling the waveguide. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Kwon, S.-H. Plasmonic Waveguide Coupled Ring Cavity for a Non-Resonant Type Refractive Index Sensor. Sensors 2017, 17, 2526.
Kwon S-H. Plasmonic Waveguide Coupled Ring Cavity for a Non-Resonant Type Refractive Index Sensor. Sensors. 2017; 17(11):2526.Chicago/Turabian Style
Kwon, Soon-Hong. 2017. "Plasmonic Waveguide Coupled Ring Cavity for a Non-Resonant Type Refractive Index Sensor." Sensors 17, no. 11: 2526.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.