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Fiber-optic Fourier-domain interferometer for temperature measurements. Here, SLD is a superluminescent diode and L is a lens.
Autocorrelation spectrum obtained from the inverse Fourier transform of a spectral interferogram.
Variation in the optical path length with temperature of a 780-μm-thick Si wafer inside a blackbody furnace.
Real-time monitoring of the temperature of a Si wafer upon 1 s of irradiation by a halogen lamp. The data were collected using an autocorrelation low-coherence interferometer (thin line) and a thermocouple (dots).
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