Abstract

Linearity is a very important parameter to measure the performance of avalanche photodiodes (APDs) under high input optical power. In this paper, the influence of the absorption layer on the linearity of APDs is carefully studied by using bandgap engineering with the structure model of separated absorption, grading, charge, multiplication, charge, and transit (SAGCMCT). The simulated results show that in the hybrid absorption layer device structure the 1 dB compression point can be improved from −9 dBm to −2.1 dBm by increasing the proportion of the p-type absorption layer. In the device structure with only one absorption layer, increasing the doping level of the absorption layer can also improve the 1 dB compression point from −8.6 dBm to 1.43 dBm at a gain of 10. Therefore, the absorption layer is very critical for the linearity of APDs.

© 2022 Chinese Laser Press

Low dark current and high gain-bandwidth product of avalanche photodiodes: optimization and realization

Hui Wang, Xiaohong Yang, Rui Wang, Tingting He, and Kaibao Liu
Opt. Express 28(11) 16211-16229 (2020)

InAlAs/InGaAs avalanche photodiode arrays for free space optical communication

Mike S. Ferraro, William R. Clark, William S. Rabinovich, Rita Mahon, James L. Murphy, Peter G. Goetz, Linda M. Thomas, Harris R. Burris, Christopher I. Moore, William D. Waters, Kenneth Vaccaro, and Brian D. Krejca
Appl. Opt. 54(31) F182-F188 (2015)

Study of dynamic biasing InGaAs/InAlAs avalanche photodiodes with different active areas

Zebiao Lin, Yang Tian, Xuan Zeng, Xuzhen Yu, Xuyang Feng, Wenqiang Ding, Hewei Zhang, and Yanli Zhao
Opt. Express 31(16) 26245-26253 (2023)

Linearity improvement of high-speed avalanche photodiodes using thin depleted absorber operating with higher order modulation format

Masahiro Nada, Takuya Hoshi, Hiroshi Yamazaki, Toshikazu Hashimoto, and Hideaki Matsuzaki
Opt. Express 23(21) 27715-27723 (2015)

High performance waveguide-coupled Ge-on-Si linear mode avalanche photodiodes

Nicholas J. D. Martinez, Christopher T. Derose, Reinhard W. Brock, Andrew L. Starbuck, Andrew T. Pomerene, Anthony L. Lentine, Douglas C. Trotter, and Paul S. Davids
Opt. Express 24(17) 19072-19081 (2016)