SPR fiber optic microsensor: system and applications

Bjoern Grunwald; Gerhard A. Holst

doi:10.1117/12.456110

14 February 2002 SPR fiber optic microsensor: system and applications

Bjoern Grunwald, Gerhard A. Holst

Proceedings Volume 4578, Fiber Optic Sensor Technology and Applications 2001; (2002) https://doi.org/10.1117/12.456110
Event: Environmental and Industrial Sensing, 2001, Boston, MA, United States

Abstract

An improved refractive index microsensor based on surface plasmon resonance (SPR) for fine scale measurements in aquatic environments is presented. Furthermore this sensor should serve as a platform for different applications. In the first place refractive index measurements in marine environments have been performed to characterize the light conditions around photosynthetically active organisms. By scalar irradiance microprobes the light intensity can be investigated at a spatial resolution of 100micrometers . The presented sensor for refractive index achieves a spatial resolution better than 1mm. It covers a range of 1.30 and 1.38 refractive index units (RIU) with an accuracy of 5x10^-4 RIU. Due to this accuracy, the miniaturized geometry and the simple preparation the sensor can serve as a platform for chemo- and biosensors with a high spatial resolution and fast response. Therefor a suitable sensitive layer that converts the specific analyte concentration into a refractive index change can be deposited onto the gold surface. For that purpose swellable polymer microspheres are currently investigated. The sensor characteristics, measurement system, and applications are presented.

Citation Download Citation

Bjoern Grunwald and Gerhard A. Holst "SPR fiber optic microsensor: system and applications", Proc. SPIE 4578, Fiber Optic Sensor Technology and Applications 2001, (14 February 2002); https://doi.org/10.1117/12.456110

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