光模块&光纤连接器介绍.ppt

Optical Transceivers Optical Transceivers Author: Sujing 1Definition and Function Definition and Function Optical module is the device which converter cooper signal to optical signal, and vice versa. It is the main device in optical munication. 2 Optical munication Optical munication system system Standard digital optical system 3 The most simply optical system The most simply optical system 4Optical Transceivers Survey: Optical Transceivers Survey: A optical module combined by 3 parts: OSA,electronic device and optical connector. 光发射部分由驱动电路、控制电路(如 APC 、 ATC) 、光源三部分构成,具有发射禁止和监视输出等功能。光接收部分主要由 PIN-TIA 前放组件和主放电路两部分组成,并具有无光告警(LOS) 功能。 5 See where it See where it use. use.? 6 FTTX, FTTH FTTX, FTTH , , FTTP FTTP …………? Fiber-to-the-x ( FTTx ) (FTTx, x = H for home, P for premises, C for curb and N for node or neighborhood) 7 Classification Classification by transmission medium Single mode transceiver Multi mode transceiver 8 Fiber structure Fiber structure The main contain of fiber is high purity SiO2. And with some other materials with very few quantity, in order to enhance the reflection. 9 Multimode Fiber Multimode Fiber Two standard of Multimode fiber is μ m and 50/125 μm; &50 refers to the diameter of ferrules. 125 refers the diameter with coating. Multimode fiber only use on less capacity and short distance transmission. 10