The illustration above shows a class of photonic fiber sensors, such as
– GaAs temperature sensors
– refractive index sensors (localized surface plasmon resonance)
– photonic crystal structures
A broad band light source, typically a laser diode or an LED, is coupled to a single-mode fiber. At the end of the fiber, the photonic sensor element reflects a certain part of the spectrum. This reflected light is guided onto a detector with a fiber optic circulator. The sensor elements works such that the spectral peak of the reflected light shifts with the physical quantity of interest.
Since the WaveEye is not limited to measure narrow band laser radiation, it is ideally suited to measure these spectral shifts. Compared to spectrometers, the WaveEye is
– faster
– smaller
– mechanically robust
– accurate in low-light conditions
OEM versions of the WaveEye can
– be adjusted to specific wavelength ranges
– have increased sampling speeds / bandwidths
– be extended to many measurement channels