(The bare fiber is generally divided into three layers: the core high refractive index glass core (the core diameter is generally 50 or 62.5μm), the middle is the low refractive index silica glass cladding (the diameter is generally 125μm), and the outermost is the reinforcement resin coating. ?? 2. Numerical aperture: ?? The light incident on the end face of the fiber cannot be fully transmitted by the fiber, only the incident light within a certain angle range can. This angle is called the numerical aperture of the fiber. It is advantageous for the optical fiber to have a larger numerical aperture for optical fiber docking. Optical fibers produced by different manufacturers have different numerical apertures (ATTCORNING).)
收藏
