Dr. Wei Su Profile

Dr. Wei Su

at Changchun Univ of Science and Technology

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Proceedings Article | 20 January 2005 Paper

Numerical design of novel DBR

Wei Su, Gang Zhong

Proceedings Volume 5628, (2005) https://doi.org/10.1117/12.568810

KEYWORDS: Vertical cavity surface emitting lasers, Surface plasmons, Reflectivity, Gallium arsenide, Numerical simulations, Gallium, Resistance, Refractive index, Superlattices, Optoelectronic devices

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A numerical design of a kind of novel distributed Bragg reflectors (DBRs) which is used in VCSEL with 808nm wavelength is reported. In this DBR, the short period superlattice (SPS) is used for the layers with high refractive index. First, the principle of the DBR with SPS is described, and the special features of the novel DBR are given. According to the literature, structure of this type can make the series resistance of VCSEL lower. Second, the numerical design of the DBR is performed by the characteristic matrix method. Third, the numerical simulation of the DBR is given. In accordance with the numerical simulation, the reflective spectrum of the DBR is similar to the traditional DBR. And, the conclusion is finally given. The results of numerical simulation to the DBR indicate that the SPS is well enough to act as the high refractive index layers in DBR. At the same time, because of its superior electrical properties, it is a promising way to obtain the DBR with lower series resistance.

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