A comparative study of the temperature dependence of lasing wavelength of conventional edge emitting stripe laser and vertical cavity surface emitting laser

Proceedings of the International Conference on Optical Communication Systems Pub Date : 2011-07-18 DOI:10.5220/0003512101410145

N. I. Khan, S. H. Choudhury, Arif Ahmed Roni

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引用次数: 5

Abstract

Semiconductor lasers are the integral parts of optical communication systems. The temperature dependence of the lasing wavelength of a laser is an important issue because it is used in different environment with varying thermal conditions. In this paper, a comparative study of the temperature dependence of lasing wavelength of two types of laser diode has been presented. The comparison was made between an InGaAsP/InP stripe geometry edge-emitting laser and vertical cavity surface emitting laser (VCSEL) with GaAs in the active region. For both cases, the temperature dependence was observed for different heat sink temperatures ranging from 20°C to 50°Cat an interval of 5°C for an operating current of 0.763A and 1.88mA respectively. The lasing wavelength shifts for stripe laser and VCSEL have been found to be 0.3nm/K and 0.06nm/K respectively. VCSEL exhibits significantly greater thermal stability than stripe laser. The result has also been elucidated with a comprehensive theoretical excerpt.

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对比研究了传统边发射条纹激光器和垂直腔面发射激光器激光波长对温度的依赖性

半导体激光器是光通信系统的重要组成部分。由于激光器使用在不同的热环境中，其激光波长的温度依赖性是一个重要的问题。本文比较研究了两种激光二极管的激光波长对温度的依赖性。比较了在有源区添加GaAs的InGaAsP/InP条纹几何边缘发射激光器和垂直腔面发射激光器(VCSEL)。对于这两种情况，在工作电流分别为0.763A和1.88mA的情况下，在20°C至50°C的不同散热器温度范围内观察到温度依赖性。条纹激光器和VCSEL激光器的激光波长位移分别为0.3nm/K和0.06nm/K。VCSEL的热稳定性明显优于条形激光器。本文还对结果进行了全面的理论阐述。

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Proceedings of the International Conference on Optical Communication Systems

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