Patent · US Active

Tunable light source for label-independent optical reader

US8384905B2 · kind B2 · utility

10Cited by
3References
24Claims
0Family size

Assignee

Inventor

Key dates

Filing dateNov 4, 2010
Grant dateFeb 26, 2013
Priority date—
Expiry dateSep 8, 2031

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG01N2201/062
  • WIPO fieldMeasurement
  • WIPO sectorInstruments

Abstract

A tunable light source for interrogating at least one resonant waveguide grating (RWG) biosensor having a resonance linewidth. The tunable light source includes a broadband light source that emits a light beam having a first spectral bandwidth greater than the RWG biosensor resonance linewidth. The broadband light source may be substantially spatially incoherent. A tunable optical filter having a tunable spectral linewidth is arranged to receive and filter the light beam to cause the light beam to have a second spectral bandwidth substantially the same as the RWG biosensor resonance linewidth. Label-independent optical readers that employ the tunable light source are also disclosed.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.