Refractive index sensor for analyzing an analyte, and method of fabricating thereof
US9341568B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2013 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | Oct 8, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A refractive index sensor is provided for analyzing an analyte, the sensor including: a strip waveguide for receiving an input light signal therein and transmitting the light signal, subject to manipulation as it propagates through the strip waveguide, to a detector for analysis with respect to the analyte; and a slot waveguide for sensing the analyte disposed thereon and for receiving a sensing signal, corresponding to said manipulation of the light signal, from the strip waveguide, wherein a grating is formed on a surface of the strip waveguide to enable coupling of the sensing signal from the strip waveguide to the slot waveguide, and the sensor is configured with enhanced sensitivity based on a sensitivity difference between the slot waveguide and the strip waveguide, and/or a group index difference between the slot waveguide and the strip waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.