Author(s): Huang, XR (Huang, Xingrui); Liu, Y (Liu, Yang); Li, ZY (Li, Zhiyong); Fan, ZC (Fan, Zhongchao); Han, WH (Han, Weihua)

Source: APL PHOTONICS Volume: 6 Issue: 11 Article Number: 116102 DOI: 10.1063/5.0065437 Published: NOV 1 2021

Abstract: In this paper, a silicon rich nitride-lithium niobate on insulator hybrid platform with waveguides and several key components is proposed. The propagation loss of the silicon rich nitride-lithium niobate rib-loaded waveguide (300 x 300 nm(2)) is 0.86 dB/cm at 1550 nm. Passive devices, including adiabatic power splitters, multimode interferometer-based splitters, asymmetrical Mach-Zehnder interferometers, and Bragg grating filters, are fully designed and characterized. Moreover, we report a Mach-Zehnder modulator with high-speed modulation up to 120 GBaud without digital compensation. The electro-optical response with 1 dB roll-off at 40 GHz is obtained, and the 3-dB modulation bandwidth is predicted to be > 100 GHz. Hence, the proposed platform enables high-performance passive and active devices with low loss and high integration density, making it a promising candidate for emerging photonics integrated circuits.

Accession Number: WOS:000715754300002

ISSN: 2378-0967

Full Text: https://aip.scitation.org/doi/10.1063/5.0065437