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首页> 外文期刊>Optical engineering >Microwave photonic phase shifter with a full 360-deg tunable range based on polarization sensitive electro-optical phase modulator and polarization modulator
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Microwave photonic phase shifter with a full 360-deg tunable range based on polarization sensitive electro-optical phase modulator and polarization modulator

机译:基于偏振敏感的电光相位调制器和偏振调制器的全360度可调范围的微波光子移相器

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摘要

A microwave photonic phase shifter that can realize a full 360-deg phase shift is presented. In the scheme, an optical polarization modulator is used to generate a single-sideband optical microwave signal with two orthogonally polarized tones, then a polarization sensitive electro-optical phase modulator is used to introduce the relative phase shifts between the two orthogonally polarized tones to realize the desired phase shift for the microwave signal in the photocurrent, and the phase shift of the microwave signal increases linearly with the DC driving voltage while it keeps a constant amplitude. The simulation results show that continuous phase shift with tuning range from -180 deg to +180 deg is realized for the microwave with the frequency from 4 to 38 GHz and the amplitude variation of the phase-shifted microwave signal is <1 dB.
机译:提出了一种可以实现完整的360度相移的微波光子相移器。在该方案中,使用光偏振调制器生成具有两个正交偏振音的单边带光微波信号,然后使用偏振敏感电光相位调制器引入两个正交偏振音之间的相对相移以实现光电流中微波信号的期望相移,并且微波信号的相移随直流驱动电压线性增加,同时保持恒定的幅度。仿真结果表明,对于频率为4至38 GHz的微波,调谐范围为-180度至+180度,可以实现连续相移,相移后的微波信号的幅度变化小于1 dB。

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