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光脉冲信号通过光纤波导时,会发生脉冲加宽(实际上,由于不同的模有不同的损耗,光脉冲信号除了加宽外,还发生畸变)。这是由于光纤波导的色散引起的。光纤波导色散分为:
When the optical pulse signal passes through the fiber waveguide, pulse broadening occurs (in fact, the optical pulse signal is distorted apart from widening due to the different modes). This is due to the dispersion of the fiber waveguide. Fiber waveguide dispersion is divided into: