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Sensitivity measuring device of a visible fiber optic spectrometer

A fiber optic spectrometer and measuring device technology, which is applied to measuring devices, optical radiation measurement, spectrometry/spectrophotometry/monochromator, etc., can solve the problem that the measurement error of the sensitivity index of the optical fiber spectrometer is uncontrollable, and the visible light band cannot be effectively applied. , the inability to obtain reliability and other problems, to achieve the effect of solving the search and accurate measurement

Active Publication Date: 2020-08-07
THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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Problems solved by technology

Disadvantages of the prior art: 1. The existing optical fiber spectrometer sensitivity measurement method and device are suitable for the near-infrared band and cannot be effectively applied to the visible light band; 2. The measurement error of the optical fiber spectrometer sensitivity index in the visible light band is uncontrollable by other simple methods. Unable to get high confidence results

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  • Sensitivity measuring device of a visible fiber optic spectrometer

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Embodiment 1

[0019] Such as figure 1 As shown, in order to solve the deficiencies and defects of the prior art methods, the present invention proposes a fiber optic spectrometer sensitivity measurement device in the visible light band, including a narrow linewidth laser source 1 connected and communicated in sequence, a first optical fiber jumper 2, a first Adjustable optical attenuator 3 , second optical fiber jumper 4 , second adjustable optical attenuator 5 , third optical fiber jumper 6 , optical fiber spectrometer 7 , and optical power meter 8 .

[0020] When the optical signal generated by the narrow linewidth laser source 1 enters the first adjustable optical attenuator 3 through the first optical fiber jumper 2, and then is transmitted to the second adjustable optical attenuator 5 by the second optical fiber jumper 4, and then The third optical fiber jumper 6 is transmitted to the measured fiber optic spectrometer 7, and through the constant attenuation adjustment of the second adj...

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Abstract

The invention provides a sensitivity measuring device of a visible optical fiber spectrometer. The device is mainly formed by a narrow linewidth laser source, an optical fiber jumper, an adjustable optical attenuator and an optical power meter, problems of optical signal generation, transmission and attenuation control are effectively solved. Through precisely controlling the sensitivity measuringdevice to reach a sensitive state and through the comparison and measurement of a specific optical power meter under the same condition, a specific value of a sensitivity index is given, and problemsof sensitivity value searching and accurate measurement of the optical fiber spectrometer are solved effectively.

Description

technical field [0001] The invention belongs to the technical field of sensitivity measurement of an optical fiber spectrometer, and in particular relates to a sensitivity measurement device of a visible optical fiber spectrometer. Background technique [0002] For the spectrometer sensitivity measurement of the optical fiber interface, the optical power of the input light source must be continuously adjusted to realize the sensitivity determination. At present, the combination of tunable laser and optical attenuator is generally used to realize the sensitivity measurement in the near-infrared band. After the combination of tunable laser and optical attenuator The output laser power is known and does not need to be measured. However, since the tunable lasers and optical attenuators on the market all work in the near-infrared wavelength range, there is no feasible method for sensitive detection in the visible light band. Through research and verification of the optical atten...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J3/28G01J3/10
Inventor 聂建华江升吴威宋平孟鑫
Owner THE 41ST INST OF CHINA ELECTRONICS TECH GRP
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