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首页> 外文会议>2014 International Topical Meeting on Microwave Photonics and the 2014 9th Asia-Pacific Microwave Photonics Conference >LiNbO3 optical SSB modulator using microwave branchline coupler miniaturized by inter-digital capacitors
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LiNbO3 optical SSB modulator using microwave branchline coupler miniaturized by inter-digital capacitors

机译：使用由叉指电容器小型化的微波支线耦合器的LiNbO 3 光学SSB调制器

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摘要

Optical single sideband (SSB) modulation can be realized by using a Mach-Zehnder (MZ) interferometer with the branch-line coupler (BC) circuit as a 90 degree hybrid. In this paper, a miniaturized configuration of the BC circuit with installed series capacitors of the inter-digital structure was designed onto an electro-optic (EO) crystal, LiNbO, substrate. Compared with a conventional BC, an area of the miniaturized BC was reduced by about 60% and the operation as the 90 degree hybrid was confirmed at around 10 GHz. The BC circuit directly connected with modulation electrodes was designated onto an EO modulator substrate for a single input type optical SSB modulator with a compact configuration. In the experiment, the modulator was fabricated and the optical SSB signal with the sideband suppression ratio of more than 30 dB was observed using light-waves of the 1550 nm region.
机译：可以通过将Mach-Zehnder（MZ）干涉仪与支路耦合器（BC）电路作为90度混合信号来实现光学单边带（SSB）调制。在本文中，在电光（EO）晶体LiNbO衬底上设计了带有叉指结构的串联电容器的BC电路的小型化配置。与传统的BC相比，小型BC的面积减少了约60％，并且在90 GHz附近证实了90度混合动力的运行。直接与调制电极相连的BC电路被指定在EO调制器基板上，用于结构紧凑的单输入型光学SSB调制器。在实验中，制造了调制器，并使用1550 nm区域的光波观察了边带抑制比大于30 dB的光学SSB信号。

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