Design Of Fourier Transform Spectrometer Training System

Fourier transform spectroscopy is a well-known and widely used technique. It is a powerful tool to measure the spectra of weak extended sources, since it offers distinct throughput and multiplex advantages, providing higher signal-to-noise ratio performance compared with other methods. Many commercial Fourier spectrometers are available. Their main applications are in fields that require high resolution. Therefore, commonly used Fourier spectrometers necessitate a scanning mirror mechanism with very high precision, resulting in large size and high cost.Nowadays, lower resolution miniature spectrometers become attractive because of new applications, expanding opportunities in a remarkable variety of disciplines and industries. Miniaturization could make instruments and sensors smaller, cheaper and faster. Target applications are various and they include color measurements, industrial process control, quality control of food, environmental monitoring or medical diagnostics. Other aspects, like the size and the fabrication cost, play an important role for this type of miniature spectrometers, enabling the realization of small size, portable sensor solutions.This paper is proposed for the purpose of providing a platform for the students facing optic-Mechatronics to study and do experimental researches, as well as improving their recognizing ability of the Fourier spectrograph with Michelson interferometer and Fourier optics. The paper introduces the designing idea and designing proposal of Fourier Transform Spectrum experimental teaching system that is facing optic-Mechatronics. It gives emphasis to expatiate on the composing of the system, hardware configuration and characteristics of the system. This proposal is relatively low cost, because it takes use of the method of module design. At the end of the paper, the author gives the spectrum graph of measured sodium lamp and low pressure mercury lamp and then analyzes the result. The experimental result shows that the designing proposal proposed in the paper is a good way to measure the two spectrum with ideal resolution.