Optical multiphase flow sensor

Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system

Reexamination Certificate

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Details

C250S227240, C385S012000

Reexamination Certificate

active

07087887

ABSTRACT:
Waveguide sensors having a side-polished coupling port at the waveguide cladding to sense a material based on material-specific optical attenuation by evanescent coupling at the coupling port.

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Ramos, et al.; Oblique-Tip Fiber-Optic Sensors for Multiphase Fluid Discrimination; Journal of Lightwave Technology, vol. 17, No. 8, Aug. 1999.

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