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Optical fiber sensor having a sol-gel fiber core and a method of making

Patent ·
OSTI ID:1175783
; ; ;
A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cladding. Alternatively, air can be used as a low refractive index medium. The sol-gel fibers have a micro pore structure which allows molecules to diffuse into the fiber core from the surrounding environment. Chemical and biochemical reagents can be doped into the fiber core. The sol-gel fiber can be used as a transducer for constructing an optical fiber sensor. The optical fiber sensor having an active sol-gel fiber core is more sensitive than conventional evanescent wave absorption based optical fiber sensors.
Research Organization:
Mississippi State University, Mississippi State, MS (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-98FT40395
Assignee:
Mississippi State University (Mississippi State, MS)
Patent Number(s):
7,058,243
Application Number:
10/046,731
OSTI ID:
1175783
Country of Publication:
United States
Language:
English

References (11)

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Comparison of formats for the development of fiber-optic biosensors utilizing sol–gel derived materials entrapping fluorescently-labelled protein journal January 1999
Properties of porous silica glasses prepared via sol–gel process journal August 2000
Sol–gels with fiber‐optic chemical sensor potential: Effects of preparation, aging, and long‐term storage journal August 1995

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