Optical fiber sensor and measuring apparatus using same

Details Optical fiber sensor and measuring apparatus using same Optical fiber sensor and measuring apparatus using same

2008-06-17

2008-06-17

Healy, Brian (Department: 2883)

Optical waveguides

Optical waveguide sensor

C385S014000, C385S034000, C385S077000, C385S096000, C385S124000

Reexamination Certificate

active

07389009

ABSTRACT:
An optical fiber sensor enabling simpler detection of a state of an external environment and a measuring apparatus using the same are provided. At a front end of an optical fiber portion20afor transmitting the light a hetero core having a different diameter from that of a core of the optical fiber portion20ais melt bonded so as to form a tip type optical fiber sensor9having a sensor portion4comprised of the hetero core on its front end. An end of the optical fiber portion20aside of this tip type optical fiber sensor9has a light source1connected to it. Returned light striking the optical fiber portion20afrom the light source1and subjected to interaction with a measurement medium MD at the sensor portion4is split by an optical fiber coupler2and received at a photodiode or spectrum analyzer6, thereby an optical fiber sensor measuring apparatus100is constructed.

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