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光纤对机械负荷极其敏感,因为机械负荷会使其传输特性畸变。这是光纤和光缆有别于其它电缆(例如射频电缆)之处,对此,试验和测量时应特别注意。正是由于这个原因,对光缆中的每根光纤都应进行测试。光纤的另外一个特点与光线的输入和输出有关。光源及光接收器同光纤的对接通常通过透镜光学系统、光纤分光器或采用直接对接方法来实现。因此,
Optical fibers are extremely sensitive to mechanical loading because mechanical loading distorts their transmission characteristics. This is where fiber and fiber cables differ from other cables, such as RF cables, for which special care should be taken when testing and measuring. It is for this reason that every fiber in a fiber optic cable should be tested. Another feature of fiber is related to the input and output of light. Light source and optical receiver docking with the optical fiber is usually through the lens optical system, optical fiber splitter or direct docking method to achieve. therefore,