Patent ID: 7835599

Claim:
An apparatus for analyzing a fluid, the apparatus comprising: an optical fiber with a core extending along a longitudinal optical axis of the optical fiber for a propagation of light along the optical axis, said core being solid except for a transversal passageway traversing the optical fiber directly through the optical axis including through said core, the passageway being a hole traversing the optical fiber in a substantially orthogonal direction relative to said optical axis of the optical fiber and having at least a portion with a taper shape; a channeling system adapted to channel the fluid through the passageway; a light source system optically coupled to the optical fiber to propagate light in the solid core of the optical fiber, and across the passageway; and a light detection system optically coupled to the optical fiber for detecting an intensity of the light exiting the fiber after having propagated across the fluid in the passageway.