Third-Order Optical Nonlinearities of 2D Materials at Telecommunications Wavelengths

Linnan Jia; Jiayang Wu; Yuning Zhang; Yang Qu; Baohua Jia; David J Moss

doi:10.3390/mi14020307

Third-Order Optical Nonlinearities of 2D Materials at Telecommunications Wavelengths

Micromachines (Basel). 2023 Jan 25;14(2):307. doi: 10.3390/mi14020307.

Authors

Linnan Jia¹, Jiayang Wu¹, Yuning Zhang¹, Yang Qu¹, Baohua Jia^{2

3}, David J Moss¹

Affiliations

¹ Optical Sciences Center, Swinburne University of Technology, Hawthorn, VIC 3122, Australia.
² School of Science, RMIT University, Melbourne, VIC 3001, Australia.
³ Australian Research Council (ARC) Industrial Transformation Training, Centre in Surface Engineering for Advanced Materials (SEAM), RMIT University, Melbourne, VIC 3000, Australia.

Abstract

All-optical signal processing based on nonlinear optical devices is promising for ultrafast information processing in optical communication systems. Recent advances in two-dimensional (2D) layered materials with unique structures and distinctive properties have opened up new avenues for nonlinear optics and the fabrication of related devices with high performance. This paper reviews the recent advances in research on third-order optical nonlinearities of 2D materials, focusing on all-optical processing applications in the optical telecommunications band near 1550 nm. First, we provide an overview of the material properties of different 2D materials. Next, we review different methods for characterizing the third-order optical nonlinearities of 2D materials, including the Z-scan technique, third-harmonic generation (THG) measurement, and hybrid device characterization, together with a summary of the measured n₂ values in the telecommunications band. Finally, the current challenges and future perspectives are discussed.

Keywords: 2D materials; telecommunications band; third-order optical nonlinearity.

Publication types

Review

Grants and funding

This research was funded by the Australian Research Council Discovery Projects Programs (No. DP150102972 and DP190103186), the Swinburne ECR-SUPRA program, the Australian Research Council Industrial Transformation Training Centers scheme (Grant No. IC180100005), and the Beijing Natural Science Foundation (No. Z180007).