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设计、制作并测试了1.55μm光波长的微带线行波电极电光调制器。如果聚合物材料的电光系数γ33=30 pm/V,中心电极L为20 mm,设计的调制器性能参数半波电压为6.70 V。用自主合成的发色团分子组成二阶非线性光学聚合物材料做为芯层制作的聚合物调制器,对调制器的各项性能参数进行了直流、低频和微波性能的测试,采用不同极化方法,在1.55μm波长上测得低频半波电压分别为10.5V(电晕极化)和4.9V(接触极化),折算得芯层材料的电光系数分别为21pm/V和45pm/V。测得消光比为24dB。用矢量网络分析仪测试电极系统的微波性能,S参数反映了此电极系统具有低的微波传输损耗和反射损耗。
Design, fabrication and testing of 1.55μm optical wavelength microstrip line traveling wave electrode electro-optic modulator. If the polymer material’s electro-optical coefficient γ33 = 30 pm / V, the center electrode L is 20 mm, the designed half-wave voltage of the modulator is 6.70 V. The self-synthesized chromophore molecules are used to make the second-order nonlinear optical polymer material as the polymer modulator of the core layer. The performance parameters of the modulator are tested by DC, LF and microwave performance. Method, the half-wave voltage of low frequency was 10.5V (corona polarization) and 4.9V (contact polarization) measured at the wavelength of 1.55μm. The calculated electro-optic coefficients of the core material were 21 pm/V and 45 pm/V . Extinction measured as 24dB. The vector network analyzer was used to test the microwave performance of the electrode system. The S-parameter reflects that the electrode system has low microwave transmission loss and reflection loss.