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year 28, Issue 1 (1st Iranian Conference on optical fiber sensors (ICOFS 2021) 2021)
ICOP & ICPET _ INPC _ ICOFS 2021, 28(1): 34-36 |
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Tamimi A, Ghezelayagh M, Bashiri A. Design and construction of visible light Instantaneous wavelength measurement. ICOP & ICPET _ INPC _ ICOFS 2021; 28 (1) :34-36
URL: http://opsi.ir/article-1-2502-en.html
URL: http://opsi.ir/article-1-2502-en.html
1- Faculty of EE, Imam Hossein University, Tehran, Iran
Abstract: (1044 Views)
This paper presents a method for measuring the wavelength of visible light. Many laboratory and industrial applications require a wavelength measurement system. Wavelength sensing devices in the visible and infrared spectrum are expensive and bulky. As a result, the use of wavelength sensors has been neglected in many applications. In this research, a practical design and construction of a wavelength measuring device with a simple electro-optical method has been investigated. Cost is much lower than the existing spectrometers, portability and continuous output are the features of this system. The system's response range is from 750 to 950 nm. Increasing wavelength spectral range is possible using a different optical filter. The key to solving the problem is the unique amount of light passing through a filter for a specific wavelength. When the signal reaches the system with a specific wavelength, as the amount of input light attenuation is a unique for each wavelength, the wavelength (frequency) of the received signal can be determined by the amount of light attenuation in comparison to reference light. Then the wavelength can be declared by a processor. Depending on the measured wavelength, color detection can be done based on the wavelength.
Keywords: Instantaneous frequency measurement, Wavelength measurement, Frequency measurement, Spectrometry
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