Modular fiber optic chemical sensor

Details Modular fiber optic chemical sensor Modular fiber optic chemical sensor

G - Physics

02

B

73/53, 88/97.6

G02B 6/26 (2006.01) G01N 21/75 (2006.01) G01N 21/77 (2006.01) G02B 6/42 (2006.01)

Patent

CA 1325908

MODULAR FIBER OPTIC CHEMICAL SENSOR ABSTRACT OF THE DISCLOSURE A modular fiber optic chemical sensor (FOCS) is formed using a capillary tube clad. A fiber optic core with reactive surface is exposed to a sample environment and then the capillary tube is fitted over the core. The capillary could also be porous so that in-situ measurements can be made. The capillary can be spaced from the core so that a flow channel for gas and liquid sensing is formed, or an index matching fluid may fill the channel. Measurements can be made in a compact portable modular detector unit in which the FOCS is placed between an excitation source and a detector or single ended where the excitation source and detector are at the same end of the core and a reflector is placed at the end of the core.

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