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导出了用InGaAs/InP异质结光电晶体管(HPT)制作的数字接收机的灵敏度。同时指出:一、目前所公布的类似估计值与理论要求不相符;二、在低于1 Gb/S的传输速率下,依据需要对接收的光功率水平进行有效地补偿或控制时,那就会使在灵敏度方面优于混合式PIN-FET的HPT接收机复杂化。当输入电容C_2不同以及电流增益h_(fe)=1000时,1.3μm波长HPT接收机灵敏度估计值(归一化成速率周期T,且量子效率η为100%)
The sensitivity of a digital receiver made with an InGaAs / InP heterojunction phototransistor (HPT) is derived. At the same time, it is pointed out: First, the currently published similar estimates do not match the theoretical requirements; Second, at transmission rates below 1 Gb / s, the received optical power level is effectively compensated or controlled as needed HPT receivers that are superior to hybrid PIN-FETs in terms of sensitivity are complicated. When the input capacitance C_2 is different and the current gain h_ (fe) = 1000, the 1.3μm wavelength HPT receiver sensitivity estimate (normalized to the rate period T and the quantum efficiency η is 100%)