Bias voltage control device and bias voltage control method based on dual polarization iq modulator
An IQ modulator and bias control technology, applied in the field of optical communication, can solve problems such as affecting system performance and unstable bias state, and achieve the effect of simple operation and convenient use
Active Publication Date: 2021-10-08
GUANGXUN SCI & TECH WUHAN
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This may cause its bias state to be unstable, affecting system performance
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[0054]Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0055] The present disclosure provides a bias control device based on a dual-polarization IQ modulator. figure 1 It is a schematic structural diagram of a bias voltage control device based on a dual-polarization IQ modulator according to an exemplary embodiment. Such as figure 1 As shown, the bias control device includes a dual-polarization IQ modulator, a controller and a voltage-controlled co...
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The present disclosure relates to a bias voltage control device and a bias voltage control method based on a dual-polarization IQ modulator. The bias control device includes a dual-polarization IQ modulator for coherently modulating the optical carrier emitted by the light source; a controller electrically connected to the dual-polarization IQ modulator for obtaining The optical power of the optical carrier, and adjust the bias value within the preset bias voltage range according to the minimum or median value of the optical power; and a voltage-controlled constant current circuit, the input end is connected to the controller, and the output end and the dual-polarization IQ modulator, for outputting the bias signal for performing the coherent modulation to the dual-polarization IQ modulator based on the bias voltage value output by the controller, so when the bias voltage value In the case of frequent adjustments, the linear characteristic between the input signal and the output signal of the voltage-controlled constant current circuit can be used to realize the adjustment of the bias voltage of the dual-polarization IQ modulator corresponding to the change of the bias value, which is simple to operate and easy to use.
Description
technical field [0001] The present disclosure relates to the technical field of optical communication, and in particular to a bias voltage control device and a bias voltage control method based on a dual-polarization IQ modulator. Background technique [0002] At present, optical communication technology is developing towards higher speed and higher capacity. In high-speed optical transmitters, the modulation of optical signals usually requires the use of dual-polarization IQ modulators. However, when the dual-polarization IQ modulator is applied, it is easily affected by some environmental factors, including temperature. Doing so may cause its bias state to become unstable, affecting system performance. In particular, when performing optical carrier modulation on a light source, in order to ensure the effect of optical carrier modulation, it is necessary to control the bias state of the modulator. Contents of the invention [0003] In one aspect, the present disclosure...
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IPC IPC(8): H04B10/556H04B10/54H04B10/548G02F1/03G02F1/035
CPCG02F1/03G02F1/035H04B10/541H04B10/548H04B10/5561
Inventor 陈晓曼陈胜郑科佳
Owner GUANGXUN SCI & TECH WUHAN