Optical waveguide sensors having high refractive index sensitivity
US6366722B1 · kind B1 · utility
132Cited by
15References
45Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 26, 2001 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Jun 26, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/02361
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical waveguide sensor having high refractive index sensitivity over a range of ambient refractive indices is provided. The sensor comprises a core having at least one long period gating disposed therein. An inner and outer cladding region, each cladding region having an effective refractive index. The total effective refractive index of the inner cladding region and the outer cladding region is approximately equal to but not greater than the effective refractive index of an environmental parameter to be sensed. These optical waveguide sensors are useful for measuring changes in a variety of environmental parameters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.