高速铌酸锂电光调制器研究进展

Research progress of high-speed lithium niobate electro-optic modulator

摘要:

近年来,薄膜铌酸锂电光调制器的研究取得了快速发展,其小尺寸、高带宽、低半波电压等优点成为大家关注的热点。本文梳理了铌酸锂电光调制器的波导结构、电极结构及偏置点控制技术的相关研究进展,分析了平面掩膜、薄膜脊型、光子晶体等三种不同结构波导性能,讨论了铌酸锂调制器集总和行波两种电极结构的特点及其设计考量因素,总结了电光调制器偏置点光功率控制和扰动信号控制两种方法的优缺点及其相关研究成果。最后对铌酸锂电光调制器的发展趋势进行了展望。

Abstract:

In recent years, the research of thin film LiNbO3 electro-optic modulator has developed rapidly, and its advantages such as small size, high bandwidth and low half-wave voltage have become the focus of attention. This paper reviews the research progress of waveguide structure, electrode structure and bias point control technology of LiNbO3 electro-optic modulator, analyzes the performances of three different waveguide structures, including planar mask, thin film ridge and photonic crystal, and discusses the characteristics and design considerations of two electrode structures of LiNbO3 modulator, namely, lumped and traveling wave. The advantages and disadvantages of bias point optical power control and disturbance signal control of electro-optic modulator and their related research results are summarized. Finally, the development trend of LiNbO3 electro-optic modulator is prospected.