Chapter 1
Introduction
MFPF System Overview
The MultiFrequency Phase Fluorometer (MFPF) is a flexible platform for measuring luminescence
lifetime, phase and intensity. The MFPF is a compact, self-contained, frequency-domain luminescence
monitor that uses LED excitation and photodiode detection with filter-based wavelength selection for
easy experimental set-up and control. Because the unit is self-contained, it is invariant to fiber bending
and stray light, and has a wide dynamic range of optical intensity as well as low optical and electronic
crosstalk, and low drift and phase noise. Therefore, the MFPF is especially useful for oxygen sensing
applications where sensitivity to drift is important and where sample set-ups must be left undisturbed for
long periods of time.
The MFPF is used with Ocean Optics’ Fiber Optic Oxygen (FOXY) Sensors and custom probes. FOXY
Fiber Optic Oxygen Sensors are low-power, portable devices that offer high sensitivity, reversibility, and
stability. Their small size is useful for remote monitoring. What's more, the thin film used in the probe
tips consumes no oxygen, allowing for continuous contact with the sample. FOXY Sensors offer other
key advantages: they're ideal for viscous samples and are immune to interference caused by pH change or
from changes in ionic strength, salinity, and biofouling. The MFPF unit supports the following Ocean
Optics sensors (and their respective frequencies):
MFPF-00000-000-02-0606
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