CMOS-Compatible Vertical Grating Coupler With Quasi Mach-Zehnder Characteristics
CMOS-Compatible Vertical Grating Coupler With Quasi Mach-Zehnder Characteristics
复制标题
具有准马赫曾德尔特性的 CMOS 兼容垂直光栅耦合器
DOI：
10.1109/lpt.2012.2234099
复制
发表时间：
2013-02-01
影响因子：
2.6
通讯作者：
Chen, Hongda
中科院分区：
文献类型：
--
作者：
Zhang, Zanyun;Zhang, Zan;Chen, Hongda
设计并实现了一种基于绝缘体上硅衬底的垂直光栅耦合器。来自垂直光纤的光可以耦合并等分成两个臂，光纤放置在光栅中心。光合路器被用来收集来自两个臂的传输。测得峰值耦合效率为37%。我们的设备还可以起到马赫-曾德尔干涉仪的作用。在臂差为30微米的器件中，获得了归一化透射谱，其自由光谱范围为20 nm，在1567 nm处的消光比大于12分贝。
A vertical grating coupler on silicon-on-insulator substrates has been designed and demonstrated. The light from a vertical fiber can be coupled in and split equally into two arms with the fiber placed in the grating center. An optical combiner is used to collect the transmission from the two arms. The measured peak coupling efficiency is 37%. Our device can also function like a Mach-Zehnder interferometer. In a device with an arm difference of 30 mu m, the normalized transmission spectra of 20-nm free spectral range and more than 12-dB extinction ratio at 1567 nm are obtained.