发明名称 |
Deformable interferometric sensor using a polymer between reflectors to measure analyte absorption |
摘要 |
There is described a deformable interferometric sensor in which polymer swelling, upon analyte absorption, is used to deform an on-chip silicon Fabry-Perot interferometer (FPI). The magnitude of the deformation, recorded through the resonance wavelength shift, is proportional to the analyte concentration. |
申请公布号 |
US9562810(B2) |
申请公布日期 |
2017.02.07 |
申请号 |
US201314649985 |
申请日期 |
2013.12.09 |
申请人 |
POLYVALOR, LIMITED PARTNERSHIP |
发明人 |
Peter Yves-Alain;St-Gelais Raphael |
分类号 |
G01J3/26;G01N21/45;G01N21/77 |
主分类号 |
G01J3/26 |
代理机构 |
Norton Rose Fulbright Canada LLP |
代理人 |
Norton Rose Fulbright Canada LLP |
主权项 |
1. A deformable interferometric sensor comprising:
a pair of parallel and spaced apart reflectors forming a Fabry-Perot cavity, each one of the reflectors having an outer surface and an inner surface, the pair of reflectors separated by a distance L; an optical fiber interfaced with the outer surface of each one of the reflectors and having an optical axis that intersects the pair of reflectors; and a polymer provided between the reflectors, the polymer exhibiting expansion along the optical axis of the optical fiber upon absorption of at least one analyte, and inducing a shift of a resonance wavelength substantially proportional to a concentration of the at least one analyte as absorbed, the expansion causing an increase in the distance L between the reflectors and deforming the Fabry-Perot cavity, wherein the polymer has opposite sides and is provided between the reflectors with each one of the opposite sides adjacent a corresponding one of the reflectors, and the expansion of the polymer is constrained by the corresponding one of the reflectors. |
地址 |
Montreal CA |