Author(s): Huang, XR (Huang, Xingrui); Liu, Y (Liu, Yang); Li, ZZ (Li, Zezheng); Guan, H (Guan, Huan); Wei, QQ (Wei, Qingquan); Tan, MQ (Tan, Manqing); Li, ZY (Li, Zhiyong)

Source: OPTICS LETTERS Volume: 46 Issue: 12 Pages: 2811-2814 DOI: 10.1364/OL.425181 Published: JUN 15 2021

Abstract: We propose and demonstrate a Michelson interferometer modulator with integrated Bragg reflectors on a silicon-rich nitride-thin-film lithium niobate hybrid platform. High-reflectivity Bragg reflectors are placed at the ends of both arms, which double the electro-optic (E-O) interaction length and reduce the velocity mismatch between the microwave and optical wave. The presented Michelson interferometer modulator achieves a measured half-wave voltage length product as low as 1.06 V cm and high-speed modulation up to 70 Gbps. A 3-dB E-O bandwidth beyond 40 GHz is also achieved, which is, to the best of our knowledge, the highest modulation bandwidth of Michelson interferometer modulators. (C) 2021 Optical Society of America

Accession Number: WOS:000661728300004

PubMed ID: 34129546

ISSN: 0146-9592

eISSN: 1539-4794

Full Text: https://www.osapublishing.org/ol/fulltext.cfm?uri=ol-46-12-2811&id=451558