| Proj No. | A2278-251 |
| Title | Investigation of the Multiplication Process in Electric Field-Modulated Avalanche Photodiodes |
| Summary | An avalanche photodiode (APD) is a highly sensitive semiconductor device that converts light into electrical current through the principle of avalanche multiplication. Unlike standard photodiodes, APDs operate under high reverse bias, creating an internal gain mechanism where a single photon can trigger multiple charge carriers. APDs are ideal for many diverse low-light applications including range finding, single-photon detection, fiber-optic communication, and medical imaging. The maximum practical gain of an APD is constrained by excess avalanche noise, which arises due to the inherent randomness of the impact ionization process. The excess avalanche noise degrades the signal-to-noise ratio, posing a fundamental challenge in the design and optimization of APDs. In this project, student will develop and implement the random-path length model for the simulation study of the multiplication process in APDs. The effect of a modulated electric field in the active region of the APDs will be investigated to ascertain its influence on the multiplication performance of these devices. By analyzing its impact on multiplication performance, this study aims to optimize device operation, achieve higher gain stability and reduce excess noise. This will lay the groundwork for the design and implementation of advanced, high-performance APDs. |
| Supervisor | A/P Ng Beng Koon (Loc:S1 > S1 B1A > S1 B1A 15, Ext: +65 67906559) |
| Co-Supervisor | - |
| RI Co-Supervisor | - |
| Lab | Photonics I (Loc: S1-B3a-08) |
| Single/Group: | Single |
| Area: | Microelectronics and Biomedical Electronics |
| ISP/RI/SMP/SCP?: |