Broadband photoelectric detector responsivity tester and testing method thereof
A technology of photodetectors and testing methods, applied in the direction of instruments, etc., can solve the problem that the frequency sweep method cannot get rid of the extra calibration of electro-optic conversion devices, cannot meet the responsivity measurement of ultra-bandwidth photodetectors, and the signal ratio and dynamic range of the intensity-to-noise method are small etc. to achieve the effect of realizing self-referencing measurement, ensuring self-referencing measurement, improving system signal-to-noise ratio and dynamic range
Active Publication Date: 2018-04-27
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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The invention discloses a broadband photoelectric detector responsivity tester and a testing method thereof, which relate to the technical field of optoelectronics. The broadband photoelectric detector responsivity tester comprises an optical frequency comb output module, a double-drive intensity modulation module and a photoelectric detector to be tested which are optically connected in sequence,further comprises a spectrum analysis and data processing module which is electrically connected with the photoelectric detector to be tested, and comprises a signal source 1 and a signal source 2 which are connected with two RF input ends of the double-drive intensity modulation module separately. The broadband photoelectric detector responsivity tester and the testing method thereof solve the four problems that: (1) a frequency sweeping method cannot get rid of additional calibration of an electronic-to-optical converter; (2) measurement precision and stability of an optical heterodyne method are not high; (3) a signal ratio and a dynamic range of an intensity noise method are small; (4) and a frequency shift heterodyne method is limited to the bandwidth of the electronic-to-optical converter, which results in high measurement cost, low measurement precision and poor reliability, and the responsivity measurement of an ultra-wide bandwidth photodetector cannot be met.
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