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光缆表征软件简化了有关光缆系统安装和测试的两个问题。这两个问题就是计算光缆带宽和按光源波长变动确定衰减校正值。光缆带宽对基于多模光纤的高速光纤网络和链路而言可能是个实际问题。遗憾的是,大多数光纤制造商和带宽测试仪只能测试模式色散,而不能测模内色散,这是基于LED的光纤系统的主要问题。可以通过计算下列已知的线路系数获得线路带宽的良好近似值:LED光源的波长和谱宽,激光测试和线路长度所规定的光纤带宽。该计算的典型误差为11％。
Cable characterization software simplifies both installation and testing of fiber optic cable systems. These two problems are to calculate the cable bandwidth and determine the attenuation correction value according to the wavelength of the light source. Fiber-optic cable bandwidth may be a real issue for multi-mode fiber-based high-speed fiber networks and links. Unfortunately, most fiber optic manufacturers and bandwidth testers can only test for modal dispersion without measuring in-mold dispersion, a major issue with LED-based fiber systems. A good approximation of the line bandwidth can be obtained by calculating the following known line factors: the wavelength and spectral width of the LED light source, the optical fiber bandwidth specified by the laser test, and the line length. The typical error for this calculation is 11%.