High modulation efficiency lithium niobate Michelson interferometer modulator

• DOI: 10.1364/oe.27.018731
• Publication Date: 2019-06-19T20:45:55Z
• Authors: Jian Jian; Mengyue Xu; Liu Liu; Yannong Luo; Junwei Zhang; Lin Liu; Lidan Zhou; Hui Chen; Siyuan Yu; Xinlun Cai
• Keywords: 0103 physical sciences; 7. Clean energy; 01 natural sciences

We demonstrate highly efficient lithium niobate thin film Michelson interferometer modulators with half-wave voltage length product of 1.4 V∙cm. Amorphous silicon grating couplers have been incorporated to achieve a 3.8-dB/port waveguide-fiber coupling loss. Devices with 1-mm phase shifter arms have a footprint of 2.5 mm × 1.7 mm. The demonstrated modulation data rates is up to 35 Gb/s.