纤通信系统中无源器件的原理及性能指标 Abstract Optical fiber communications equipment, optical passive devices is an important component. It is a kind of optical components, its process principles to comply with the basic law of optics and light theory and electromagnetic wave theory, various technical indicators, a variety of formulas and a variety of testing methods, and fiber optics, integrated optics are closely related; so it is with the Electrical There is a fundamenta