物理学报Issue(19)：260-265,6.DOI:10.7498/aps.62.194210
基于Add-drop型微环谐振腔的硅基高速电光调制器设计
Design of a high-speed silicon electro-optical modulator based on an add-drop micro-ring resonator
摘要
Abstract
Silicon electro-optical modulators based on add-drop micro-ring resonators have the advantage of more freedom in designing high-extinction-ratio and large-bandwidth modulators without changing the ion doping processes of the chip. Here we design a high-speed silicon modulator based on an add-drop micro-ring resonator with a radius of 20 µm; it demonstrates high extinction ratio with low reverse bias. How the coupling between the straight waveguide and the ring resonator affects the performances is studied theoretically and it is found that a lower coupling coefficient at drop port leads to a higher extinction ratio but not the best bandwidth. Therefore, a balance should be considered between extinction ratio and bandwidth. According to the optimized result of the parameters the device is fabricated and tested. The spectrum testing indicates that the device can have 12 dB extinction ratio when it is operated at 3 V reverse bias. Furthermore, we have observed 8 Gbps open-eye diagram with only 1.2 V peak-to-peak signal voltage.关键词
电光调制器/绝缘体上的硅/微环谐振腔/载流子色散效应Key words
electrode-optical modulator/silicon on insulator/micro-ring resonator/free-carrier dispersion effect引用本文复制引用
曹彤彤,张利斌,费永浩,曹严梅,雷勋,陈少武..基于Add-drop型微环谐振腔的硅基高速电光调制器设计[J].物理学报,2013,(19):260-265,6.基金项目
国家自然科学基金(批准号:60837001,61021003)资助的课题 （批准号:60837001,61021003）
