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首页> 外文期刊>International Journal of High Speed Electronics and Systems: Devices, Integrated Circuits and Systems, Optical and Quantum Electronics >Distributed balanced photodetector for RF photonic applications
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Distributed balanced photodetector for RF photonic applications

机译：分布式平衡光电探测器，用于RF光子应用

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摘要

A novel velocity-matched distributed balanced photodetector operating at 1.3 and 1.55 μm wavelengths has been proposed and experimentally demonstrated. Distributed absorption and velocity matching of the optical and microwave signals are employed to achieve high saturation photocurrent. The velocity matching between the incident optical wave and the output microwave signal allows the detector length and effective absorption volume to increase without penalizing the bandwidth. A common-mode rejection ratio greater than 27 dB has been achieved over a wide range of photocurrents. More than 24-dB suppression of the relative intensity noise of the laser source and EDFA added noise has been achieved in a broadband RF link experiment. Shot-noise limited performance has been achieved with significant improvements in the signal-to-noise ratio over a wide range of frequencies and phase mismatch of input RF signals. The experimental results indicate that the distributed balanced photodetector will have a major impact on most RF photonic systems with its superior potential of reaching very high power levels.
机译：已经提出并实验证明了一种新型的速度匹配的分布式平衡光电探测器，其在1.3和1.55μm的波长下工作。光和微波信号的分布式吸收和速度匹配用于实现高饱和光电流。入射光波与输出微波信号之间的速度匹配使检测器的长度和有效吸收量得以增加，而不会损害带宽。在广泛的光电流范围内，共模抑制比已达到27 dB以上。在宽带RF链路实验中，已实现了对激光源相对强度噪声和EDFA附加噪声的超过24 dB的抑制。通过在很宽的频率范围内以及输入RF信号的相位失配上显着改善信噪比，可以实现散粒噪声受限的性能。实验结果表明，分布式平衡光电探测器将对大多数RF光子系统产生重大影响，因为它具有达到非常高功率水平的巨大潜力。

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