Low-cost high performance readout system for fiber-optic biosensors

Håkon Strømstad; Dag Roar Hjelme

doi:10.1117/12.2080209

9 March 2015 Low-cost high performance readout system for fiber-optic biosensors

Håkon Strømstad, Dag Roar Hjelme

Proceedings Volume 9332, Optical Diagnostics and Sensing XV: Toward Point-of-Care Diagnostics; 93320A (2015) https://doi.org/10.1117/12.2080209
Event: SPIE BiOS, 2015, San Francisco, California, United States

Abstract

We have developed an instrument for real time continuous interferometric measurement of dimensional change in stimuli-responsive hydrogel sensors. The instrument consists of a superfluorecent LED and a low-cost grating spectrometer. All signal conditioning and processing is performed using a microprocessor. We have tested the instrument with a glucose sensitive hydrogel sensor. The rms noise on the length measurement is less than 1.4 nm, whereas rms noise on the length change is less than 0.25 nm. An observed bias of the length measurement can be reduced by minor changes in the frequency estimation algorithm used.

Citation Download Citation

Håkon Strømstad and Dag Roar Hjelme "Low-cost high performance readout system for fiber-optic biosensors", Proc. SPIE 9332, Optical Diagnostics and Sensing XV: Toward Point-of-Care Diagnostics, 93320A (9 March 2015); https://doi.org/10.1117/12.2080209

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available