Development of porous glass fiber optic sensors
Abstract
Porous glass fiber optic sensors in which the porous sensor tip is an integral part of the fiber optic, have been developed and found to be rugged and reliable, due to their monolithic structure and large interior surface area for attachment of active species. The sensor portion of the fiber is made porous by selective leaching of a specially formulated borosilicate glass fiber, resulting in a strong, monolithic structure where the sensor portion of the fiber remains integrally attached to the rest of the fiber, essentially eliminating losses at the sensor-light pipe interface. The process for constructing porous glass fiber optic sensors involves fiber pulling, phase separation, selective leaching, attachment of the active reagent, and integration with other optical elements. A broad range of sensors based on this technology could be developed by using different active species, such as enzymes and other biochemicals, which could be bonded to the interior surface of the porous glass sensor.
- Publication:
-
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series
- Pub Date:
- June 1989
- DOI:
- 10.1117/12.948905
- Bibcode:
- 1989SPIE..986..200M
- Keywords:
-
- Fiber Optics;
- Glass Fibers;
- Porous Materials;
- Sensors;
- Dyes;
- Fluorescence;
- Ph;
- Raman Spectra;
- Instrumentation and Photography