【摘要】 针对相位调制器的结构特点,采用与传统高速调制器不同的设计思路,在相速匹配的前提下,设计制作了一种窄火线电极和窄电极间距的高速铌酸锂相位调制器,实现了超低的半波电压,并同时满足小尺寸及宽带宽的要求.在工作波长为1 550 nm,电极作用长度为30 mm时,获得了半波电压仅为2.8 V,3 dB带宽达到17 GHz的铌酸锂相位调制器.更多还原

【Abstract】 Considering the structural peculiarity of phase modulator,a novel structural design of optical waveguide phase modulator is proposed in this study,which is different from the traditional structural design.Under the condition of phase velocity matching,with a narrow-width center electrode and a small gap between electrodes,a pint-sized phase modulator has been developed,which has the features of wide broadband and low half-wave voltage(Vπ).The 3 dB bandwidth and the Vπ of the phase modulator are measured respectively as 17 GHz and 2.8 V at a wavelength of 1 550 nm and the electrode length of 30 mm.更多还原