Enhancement of evanescent fluorescence from fiber-optic sensors by thin-film sol-gel coatings
JOSA A, Vol. 15, Issue 8, pp. 2163-2171 (1998)
http://dx.doi.org/10.1364/JOSAA.15.002163
Acrobat PDF (383 KB)
Abstract
A theoretical analysis and an experimental demonstration are presented to show the increase in collected evanescent fluorescence for a fiber-optic sensor having a high refractive-index (nr), titanium sol-gel, thin-film coating. Simulations indicated that the maximum collected fluorescence should increase and shift to smaller film thicknesses as nr increases and also predicted an interference color-filtering effect. Experimentally, collected fluorescence increased by as much as 6 over that from a bare fused-silica fiber having a numerical aperture of 0.60. Simulations and experimental data were consistent with a decrease in the effective nr as film thickness increases. Electron micrographs of the sol-gel structure supported this observation and showed that the structure differs significantly from that of films formed on a planar glass substrate. High nr, sol-gel thin films are a potentially inexpensive approach to significantly increasing the signal from fiber sensors.
© 1998 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.2370) Fiber optics and optical communications : Fiber optics sensors
(120.2440) Instrumentation, measurement, and metrology : Filters
(130.6010) Integrated optics : Sensors
(160.6060) Materials : Solgel
(260.2510) Physical optics : Fluorescence
Citation
H. Pin Kao, Nancy Yang, and Joseph S. Schoeniger, "Enhancement of evanescent fluorescence from fiber-optic sensors by thin-film sol-gel coatings," J. Opt. Soc. Am. A 15, 2163-2171 (1998)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-15-8-2163
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Ultrahigh-sensitivity fiber-optic strain and temperature sensor (OL)
- Frequency-division-multiplexed polarimetric fiber laser current-sensor array (OL)
- Optical Fiber Water Droplet Sensor Using Absorption of Fluorescence of Tm3 +:YAG (AO)
- Mach–Zehnder and Modified Sagnac-Distributed Fiber-Optic Impact Sensor (AO)
- Experimental Investigation of an Optically Amplified Time-Division-Multiplexed Polarization-Insensitive Fiber-Optic Michelson Interferometric Sensor System (AO)
Related Conference Papers
- Titania Doped with Rhodamine 6G Deposited over a Section of Optical Plastic Fiber to Produce Red Light by the Excitation with 514nm Laser Line
- Fiber Optic Sensors for the pH Measurement Based on the Absorption of the Evanescent Wave
- A Low Cost Multiplexed 1.331 μm Spectroscopic Remote Methane Sensor System
- Monitoring of Molecular Transformations with Optical Microresonators
- Effect of Gap Region Medium on Acoustic Emission Wave by Single Pulse Discharge
« Previous Article | Next Article »
OSA is a member of 