An optoelectronic device frequency response testing system and method

Abstract

The invention provides a photoelectric device frequency response test system and method. The photoelectric device frequency response test system comprises a laser light source, a broadband electro-optical modulator, a power adjusting module and a vector network analyzer. The laser light source provides a stable continuous optical signal for the broadband electro-optical modulator; the power adjusting module is used for receiving the modulated optical signal output by the broadband electro-optical modulator and outputting optical signals with different powers to the tested optical and electrical device according to the control signal of the vector network analyzer; the vector network analyzer is used for providing a microwave modulation signal and a control signal of the power adjusting module, receiving an electric output signal output by the photometric electric device and a power-regulated optical signal fed back by the power regulation module, and calculating the frequency responseof the to-be-measured optical electrical device under different power optical signals. The problem that the dynamic range of the light source module is insufficient is solved, large dynamic power adjustment can be achieved, the problem that an electro-optical modulator scans again and finds a working point when the optical power is adjusted can be avoided, and the testing efficiency is greatly improved.

Description

technical field [0001] The present disclosure relates to the field of frequency response testing, in particular to a frequency response testing system and method for optoelectronic devices. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art. [0003] The broadband electro-optical modulation module mainly completes the modulation of continuous light by radio frequency signals, and then realizes the test of the frequency response characteristics of optoelectronic devices. It is an important part of the optical receiver of the optical fiber communication system and the frequency response parameter test of optoelectronic devices. The optoelectronic device under test modulates optical signals at different powers, and the frequency response is different. Therefore, the electro-optic modulation module needs to provide modulated optical signals with differen...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present disclosure provides a frequency response testing system and method for optoelectronic devices, which solves the problem of insufficient dynamic range of the light source module, can realize large dynamic power adjustment, and can avoid the need for electro-optic modulators when adjusting optical power. The problem of rescanning and finding the working point greatly improves the test efficiency

Images