home › event - compact optical sensing systems

EVENT:

Compact Optical Sensing Systems
Conferences & Talks

Stanford University

20 April 2011
4:15pm

 

description

PARC develops various different compact optical detection systems, including our concept for a small wavelength shift detector. It is capable of measuring shifts in wavelength peaks with sub-pm resolution, by differential light detection through a linear variable filter. This can be used for example for the interrogation of Fiber-Bragg sensors.

Biomedical applications of sensors include our approach to realize a long term implantable optical glucose sensor. It is based on refractive index (RI) measurements in a miniaturized double chamber Fabry-Perot etalon that measures the differential RI between a reference chamber and a measurement chamber. The RI difference can be made specific to glucose by competitively and reversibly releasing dextran from immobilized Concanavalin A.

For point-of-need applications we have developed a robust and inexpensive microfluidic particle detector. The enabling technique is termed “spatially modulated emission” and generates a time-dependent signal as a continuously fluorescing (bio-)particle traverses a optical transmission pattern. Correlating the detected signal with the known pattern achieves high discrimination of the particle signal from background noise.

 

upcoming events   view all 

What is the Future of Cybersecurity?
Alissa Johnson
26 September 2017 | George E. Pake Auditorium, PARC
PARC Forum  

Bringing Reliable (and Transparent) AI to Business (Keynote)
Tolga Kurtoglu, Keynote Presenter
28 September 2017 | Santa Clara, CA
Conferences & Talks  

AI’s Impact on Industry (Keynote Power Panel)
Tolga Kurtoglu, Moderator
28 September 2017 | Santa Clara, CA
Conferences & Talks