本文报道了作者设计并在实验室条件下研制的钛扩散 LiNbO_3分支光波导调制器。观察了其导波模式;测得其半波电压约为9.0伏,最大调制深度约为46%,估计带宽为5.5GHz;还观察了不同频率下的电调制现象。对提高器件性能提出了改进意见。 This paper reports the titanium diffused LiNbO_3 branched optical waveguide modulator designed and fabricated by the author under laboratory conditions. The guided wave mode was observed. The measured half-wave voltage was about 9.0 volts, the maximum modulation depth was about 46% and the estimated bandwidth was 5.5 GHz. The electrical modulation at different frequencies was also observed. Improve the performance of the device made improvements.