| Proj No. | A2079-251 |
| Title | High-efficiency and Low-crosstalk Silicon High-Order Mode (De)Multiplexer |
| Summary | On-chip mode division multiplexing (MDM) exploits the spatial modes of multimode waveguides to significantly increase the transmission capacity of optical communication and interconnect systems. Low-loss and low-crosstalk mode (de)multiplexers are important components for integrated silicon MDM systems. Various mode (de)multiplexers based on multimode interferometric couplers, asymmetric Y-junctions, asymmetric directional couplers(DC), and ribbon waveguides have been reported. Among them, asymmetric DC-based mode (de)multiplexers have attracted much attention due to their small footprint and scalability. In this project, we attempt to design high-order mode couplers with high coupling efficiency and low crosstalk. In particular, we will try to demonstrate its unique application in on-chip optical interconnect systems. We will use commercial simulation software to model the coupling process of higher-order modes, and then use inverse design or deep learning algorithms to optimise the coupling performance of higher-order waveguide modes, and ultimately to solve the problems of high crosstalk and high loss of higher-order mode coupling. The project will cover guided wave optics, semiconductor device physics and advanced numerical simulation tools. The learning curve should be (1) understanding the theory of higher order mode coupling in guided wave optics, (2) simulating the basic waveguide structure and obtain its optimal coupling parameters, (3) optimising the performance of the structure in conjunction with algorithms such as inverse design or deep learning, and (4) as a demonstration, we will attempt to fabricate the device if the results of the simulation calculations are interesting enough. Through these studies, students will gain basic knowledge in optical communication and complete training in optical device design and preparation, which will help them to understand the field of optical communication, and help them to prepare for mastering this emerging on-chip communication and transmission technology. |
| Supervisor | Ast/P Guangwei Hu (Loc:S1 > S1 B1B > S1 B1B 39, Ext: +65 67904337) |
| Co-Supervisor | - |
| RI Co-Supervisor | - |
| Lab | Photonics I (Loc: S1-B3a-08) |
| Single/Group: | Single |
| Area: | Microelectronics and Biomedical Electronics |
| ISP/RI/SMP/SCP?: |