Work

Dynamic behaviors of the high-speed oxide-confined vertical-cavity surface-emitting laser based on an electro-optical-thermal model

Year: 2025

Type: article

Abstract: An electro-optical-thermal (E-O-T) model for the high-speed 850-nm oxide-confined VCSEL is presented. The static performance, small- and large-signal modulation responses of the VCSEL are calculated based on the E-O-T model. The measured power-current-voltage (P-I-V) curves, small-signal modulation responses, and eye diagrams at 25 °C and 85 °C agree well with the simulated results. It is also found that carrier unpinning occurs due to the thermal effects. At 85 °C, the fraction of the current for the stimulated emission is reduced compared with that at 25 °C. The total internal capacitance and junction impedance strongly influence the modulation bandwidth of the VCSEL. Furthermore, the influences of the thermal resistance, carrier transport, material gain, and cavity loss on the P-I-V characteristics, small-signal modulation response, and eye diagrams are investigated.

Source: Optics Express

DOI: 10.1364/oe.573841

Authors: Tianci Yu, Chenxi Hao, Bo Yang, Minglu Wang, Wanhua Zheng, Anjin Liu

Institutions: Institute of Semiconductors, University of Chinese Academy of Sciences, Chinese Academy of Sciences

Language: English

Topic: Semiconductor Lasers and Optical Devices

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $2,270

Funder: National Natural Science Foundation of China