The Design and Fabrication of High Efficiency Low Beam Divergence 850 nm VCSELs for High Capacity Optical Transmission
作者： Pengcheng Liu , Guojun Liu , Yuan Feng , Bintai He , Ning An
DOI: 10.1007/978-81-322-2580-5_68
关键词: Transmission (telecommunications) 、 Biasing 、 Laser 、 Differential gain 、 Laser beam quality 、 Quantum well 、 Distributed Bragg reflector 、 Beam divergence 、 Optics 、 Optoelectronics 、 Materials science
摘要: High-capacity transmission laser is essential for increasing information and improving digital applications. The future high-capacity, short-reach data-communication links require 850 nm vertical cavity surface emitting lasers (VCSELs) in virtue of such benefits as low threshold current, high modulation bandwidth, good circular beam quality, cost-effective fabrication, power consumption. In this paper, top-emitting, high-speed, oxide-confined VCSELs were designed, fabricated, characterized. Compared with the traditional GaAs/AlGaAs quantum well (QW) structure, we illustrated differential gain coefficient increased optimized InGaAs/AlGaAs QW from simulation results Cross-light software; Micro-cavity structure consisting a modulation-gradients distributed Bragg reflector (DBR) designed optimized; then influences on current resistance oxide-aperture investigated; Finally, voltage output against bias spot, divergence angles measured analyzed.
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