Automatic calibration device for optical power meter

Abstract

The invention discloses an automatic calibration device for an optical power meter to be calibrated. The automatic calibration device comprises an automatic calibration unit and a central control unit. A multi-wavelength stable light source, a wavelength switching control module, an optical attenuator and a real-time online light splitting and sampling module are sequentially connected in the automatic calibration unit. The real-time online light splitting and sampling module comprises an optical splitter and a built-in optical power meter, one output of the optical splitter is connected with an output optical calibration interface which is connected with an external instrument to be calibrated, the other output of the optical splitter is connected with the built-in optical power meter, the built-in optical power meter is connected with the central control unit and capable of measuring the output optical power online in real time, and the central control unit is equipped with a communication module. According to the automatic calibration device, real-time calibration of the same light source is achieved in a real sense through the real-time online light splitting and sampling mode, external influencing factors are reduced, the optical power of the calibration interface is stable, the calibration precision is greatly improved, and the technologically revolutionary significance is provided.

Description

technical field [0001] The invention belongs to the field of optical meter calibration, and in particular relates to an automatic calibration device for an optical power meter. Background technique [0002] Optical power meter is an indispensable basic test instrument in the field of optical fiber communication test. The optical power meter calibration operation in the prior art realizes the calibration by comparing with a standard optical power meter. [0003] like figure 1 , the standard light source is first connected to the standard optical power meter A through the optical attenuator; at the test wavelength, adjust the optical attenuator so that the output fiber optical power reaches the calibrated power value (such as -10dBm) and record the test of the standard optical power meter at this time value; [0004] Then connect the standard light source to the device B to be calibrated through the optical attenuator; [0005] The computer is connected to the device to be...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the shortcomings and problems existing in the calibration of existing optical power meters, the present invention provides an automatic calibration device for optical power meters, which eliminates the disadvantages of many uncontrollable nodes, many external interference factors, and inaccurate precision in the prior art. The online spectroscopic sampling method realizes real-time calibration of the same light source in the true sense, which greatly improves the accuracy, reduces manual intervention, effectively improves productivity, reduces costs, and meets the increasing production demand, which is of revolutionary significance

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