What are the wide range of applications of fiber optic spectrometers?

Spectrometers are used in a wide range of applications, such as agriculture, biology, chemistry, coating, food, colorimetry, environmental testing, thin film industry, gem testing, LED testing, spectroscopy, semiconductor industry, etc. Some typical applications are introduced below.

Color measurement--colorimeter, colorimeter

In general, color measurements of objects and dense liquids can use different experimental layouts, such as using reflective fiber optic probes or integrating spheres. In this measurement, a spectrometer with a wavelength range from 380 to 780 nm and a resolution (FWHM) of 5 nm can be used; in addition, a white light continuous light source and a white reflective white plate are required. Different fiber optic probes are available for different applications such as measuring the color of textiles, paper, fruit, wine, bird feathers etc.

2. UV/visible absorption spectrum measurement

Absorbance measurements of liquids can be achieved with different experimental layouts and wavelength ranges, such as using immersion fiber optic probes or flow sample cells for online absorbance measurements, or using sample holders for absorbance measurements of samples. For spectrometers that measure the UV/visible wavelength range, you can choose a wavelength range of 200-1100nm and a resolution of 1.4nm (FWHM). In addition, a deuterium-halogen lamp is required as a light source. Different fiber optic probes can be selected for different applications.

3. LED measurement

The simplest and fastest way to measure the entire luminous flux of an LED is to use an integrating sphere and connect it to a spectrometer. The system can be calibrated using halogen lamps, and the spectral luminous intensity of the measured light source can also be calculated, displayed and stored in μW/cm2/nm. Additional windows can display approximately 10 parameters: radiation amount μW/cm2, μJ/cm2, μW or μJ; luminous flux lux or lumen, color axes X, Y, Z, x, y, z, u, v and color temperature.

Fluorescence measurement--fluorescence spectrometer system

Fluorescence detection technology is required in many application fields such as biology (chlorophyll and carotenoids), biomedicine (fluorescence diagnosis of malignant diseases) and environmental applications. Fluorescence detection often requires highly sensitive spectrometers. In most applications, the fluorescence energy is only 3% of the energy of the excitation light, the wavelength is longer than the excitation light, and the light is scattered. In fluorescence measurement systems, it is important to avoid excitation light entering the spectrometer.