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介绍了用于高速、宽带光纤通信系统的铌酸锂(LiNbO3)光发射模块的优化设计方法。分析比较了半导体器件与铌酸锂波导器件在作为光纤通信光发射模块时的优缺点。对光发射模块的两个主要器件———掺铒铌酸锂(Er∶LiNbO3)波导激光器和LiNbO3电光调制器进行了结构设计和分析。分析和讨论了电光调制器带宽及半波电压随器件主要参数的变化关系。用BPM软件模拟了所设计的模块的结构特征。该发射模块的发射峰值波长为1531nm,调制速率为10Gbits/s。
The optimal design method of LiNbO3 light emitting module for high speed and broadband optical fiber communication system is introduced. The advantages and disadvantages of the semiconductor device and the lithium niobate waveguide device when used as the optical fiber communication light emitting module are analyzed and compared. The structure design and analysis of the two main devices of the optical transmitter module, erbium-doped lithium niobate (Li: LiNbO3) waveguide and LiNbO3 electro-optic modulator, were carried out. The relationship between bandwidth and half-wave voltage of electro-optic modulator with the main parameters of the device is analyzed and discussed. BPM software was used to simulate the structural characteristics of the designed module. The emission peak emission wavelength of the module is 1531nm, the modulation rate of 10Gbits / s.