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已有几篇文章对光纤系统误码率作过计算。然而在以往的计算方法中只考虑了单个光源。最近,由于想充分发挥光纤的带宽容量,对波分复用技术的兴趣增加了。目前正在积极地研制波分复用器和解复用器,已制造出了由二个光二极管串联组成的双波长光检测器。在这种光二极管二种不同波段上波长选择的感光灵敏度是,当波长间隔超过0.15μm时为25:1。当这种双波长光检测器用作波长解复用器时,每个二极管的输出都包括着各自另一个波段信号的串音分量。这种串
Several articles have already calculated the error rate of optical fiber systems. However, in the past, only a single light source was considered. Recently, interest in WDM technology has increased due to the bandwidth capacity of optical fibers. Wavelength division multiplexer and demultiplexer are currently being actively developed, and a dual-wavelength photodetector composed of two photodiodes in series has been manufactured. The sensitivity of the wavelength selection at two different wavelength bands of this photodiode is 25: 1 at wavelength intervals greater than 0.15 μm. When this dual-wavelength photodetector is used as a wavelength demultiplexer, the output of each diode includes the crosstalk component of the respective other band signal. This string