Halothane Sensor

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Output detection wavelength range $600-680$nm

Extrinsic fibre optic sensor

Output detection wavelength range $200-380$nm

Intrinsic fibre optic sensor

Measures CO$2$ and O$2$ together

Fibre optic is the detector

Fluorescent polymer film is the detector

Excitation wavelength $=430$nm

Excitation wavelength $=230$nm

Excitation wavelength $=630$nm