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高速长波长光探测器是高速光纤通信系统和网络的关键器件,它要求光探测器具有宽的频率响应带宽和高量子效率。常用的PIN光探测器由于量子效率和高速性能均受到吸收层厚度的牵制,使得二者相互制约,成为一对矛盾。谐振腔增强型(RCE)光探测器为这一矛盾的解决提供了有效的方案。基于谐振腔增强型光探测器的实际设计和制作模型,分析了器件吸收层中的光场分布,并将其运用于载流子的连续方程,从理论上详细地分析了器件的高速响应特性,给出了计算结果。针对研制的高速长波长谐振腔增强型光探测器,进行了理论分析和实际器件测试的结果比较,得到了比较一致的结果。
High-speed long-wavelength optical detectors are the key components in high-speed optical fiber communication systems and networks. They require optical detectors with wide frequency response bandwidth and high quantum efficiency. Commonly used PIN photodetector due to the quantum efficiency and high-speed performance are subject to the thickness of the absorber layer, making the two mutual constraints, as a contradiction. Resonator enhanced (RCE) photodetectors provide an effective solution to this paradox. Based on the actual design and fabrication model of the resonator-enhanced photodetector, the distribution of the light field in the absorber layer is analyzed and applied to the continuous equation of the carrier. The high-speed response characteristics of the device are theoretically analyzed in detail , Gives the calculation result. For the development of high-speed long wavelength resonant cavity enhanced photodetector, the theoretical analysis and actual device test results are compared, get a more consistent results.