Method and system for measuring bias points of double-parallel modulator
A dual-parallel modulator and measurement method technology, which is applied in the field of access network, can solve problems such as high cost and mutual interference, and achieve the effects of improving efficiency, reducing interference, and simplifying the system structure
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[0038] see Figure 4 , the dual parallel modulator bias point measurement system provided by the embodiment of the present invention consists of a dual parallel modulator 1 (DPMZ1), a controller 2, a bias controller 3 (BC, Bias Control), and a detection circuit 4.
[0039] First of all, the so-called bias point of the dual-parallel modulator actually refers to the voltage value that makes the two MZM modulators and the phase modulation modulator in the dual-parallel modulator work stably. Therefore, to measure the bias point, that is When the MZM modulator and the phase modulation modulator in the dual parallel modulator work stably, the initial voltage and the half-wave voltage of the bias controllers connected to the two MZM modulators and the phase modulation modulator are measured.
[0040] The controller 2 is connected to each port of the dual parallel modulator 1 (DPMZ1) to be detected through the bias controller 3 and the bias T10, and connected to the detection circuit...
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