1 310 nm波段的高速大功率改进型单行载流子光探测器

A high-speed and high-power modified uni-traveling carrier photodiode at 1 310 nm wavelength

摘要:

为了降低光载无线通信(radio over fiber,RoF)系统的复杂性和商用成本,本文设计了具有双高斯掺杂吸收层的改进型单行载流子(modified uni-traveling carrier,MUTC)光探测。该探测器工作在1 310 nm波段,通过电场调控实现了高速大功率输出,可直接驱动天线发射信号。在-8 V偏压下,直径为20 μm的光探测器可实现30.9 GHz的3 dB带宽,0.82 A/W的响应度,在15 GHz、20 GHz下的峰值射频(radio frequency,RF) 输出功率分别为34.8 dBm、34.4 dBm。

Abstract:

To reduce the complexity and commercial cost of radio over fiber (RoF) systems,this study proposes a modified uni-traveling carrier (MUTC) photodiode with a double Gaussian-doped absorption layer. Operating at 1 310 nm wavelength,the photodiode achieves high-speed and high-power output through precise electric field regulation, enabling direct antenna driving for signal transmission.Under a bias of -8 V,a 20 μm diameter photodiode demonstrates a 3 dB bandwidth of 30.9 GHz,a responsivity of 0.82 A/W,and peak radio frequency (RF) output powers of 34.8 dBm at 15 GHz and 34.4 dBm at 20 GHz.