FOT

Fiber optic spectrometer's choice of grating

by:FOT     2020-06-24

the application of fiber optic equipment technology makes the pool from the object under test sample, sampling methods have become more flexible, using the fiber optic equipment probe steered away from the source spectroscopy instrument samples to the spectrum instrument, to adapt to the complex shape and position of tested samples. Introduced by fiber optical signals isolated from internal and external environment, still can make the instrument can strengthen the bad environment, Humid climate, strong electric field disturbance, corrosive gas) Ability of resistance to ensure long-term reliable operation of the spectrometer, prolong the service life.

fiber spectrometer system has the characteristics of modular, can choose according to the needs of application of different components ( Includes a variety of different types of sampling fiber optic equipment probe, dispersion element, focusing optical system and the detector, etc. ) To establish the platform optics. Although the measuring accuracy of miniature fiber optic spectrometer grating - considered less than traditional mobile Photocell design offline photometer, but has reached the requirements of industrial field spectral analysis.

fiber optic fiber spectrometer is usually used as the signal coupling, coupling to the spectrometer will be metering spectral analysis. Due to the convenience of the fiber, the user can build spectrum acquisition system very flexible.

fiber spectrometer for grating choice:

grating choice depends on the spectral range and resolution requirements. For the fiber optic spectrometer, usually in the 200 - nm - spectral range 2200 nm. Due to demand higher resolution can be hard to get broad spectrum scope; At the same time, the higher the resolution requirements, its luminous flux will be less. For low resolution and wider spectral range, 300 lines/mm grating is usually the choice. If the requirement is high spectral resolution, you can select 3600 lines/mm grating, or choose more pixels resolution of the detector.


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