Affiliation:
1. University of British Columbia
2. Fraunhofer Institute for Solar Energy Systems (ISE)
Abstract
In this Letter, we present a comprehensive analysis of the high-speed performance of 940 nm oxide-confined AlGaAs vertical-cavity surface-emitting lasers (VCSELs) grown on Ge substrates. Our demonstration reveals a pronounced superiority of Ge-based VCSELs in terms of thermal stability. The presented Ge-VCSEL has a maximum modulation bandwidth of 16.1 GHz and successfully realizes a 25 Gb/s NRZ transmission at 85 ∘C. The experimental results underscore the significance and potential of Ge-VCSELs for applications requiring robust performance in high-temperature environments, laying the cornerstone for the future development of VCSEL devices.
Funder
National Science and Technology Council
Chung-Shan Institute of Science and Technology
National Taiwan University
National Taiwan University System (NTUS) Innovation Cooperation
AU Optronics
the University of British Columbia
Center for Quantum Science and Engineering, National Taiwan University
UMC Fellowship
Subject
Atomic and Molecular Physics, and Optics