适合于高校电路实验课用的光导纤维通话机  

Optical Fiber Communication Machine Suitable for Circuit Experiment Course in Colleges and Universities

作　　者：崔建国 宁永香 Cui Jianguo;Ning Yongxiang(Shanxi Engineering and Technology College,Yangquan Shanxi 045000 China)

机构地区：[1]山西工程技术学院

出　　处：《山西电子技术》2019年第5期3-5,14,共4页Shanxi Electronic Technology

摘　　要：针对高校电路实验课比较简单、落伍、原创性电路实验稀缺的问题,设计一个可供同学们亲自动手完成整个过程的电路实验:光导纤维通话机,电路由发信侧和收信侧组成,MIC发声,微弱的语音信号通过共射放大器放大,由电光调制电路完成语音对红色光线的调制,这是发信侧;光导纤维将已调制光信号传送到另一房间,收信侧由光敏晶体管完成光—电转换,电信号经前置放大、功率放大,最后由扬声器发声。光纤的连接没有利用专业的光纤收发器,由同学们业余制作完成,虽然通信距离、通信效果不是很好,但10M通信距离的传送效果完全可以实现。In order to solve the problems of simplicity,backwardness and scarcity of original circuit experiment in college circuit experiment course,a circuit experiment is designed,which can be completed by students themselves that it is optical fiber telephone.The circuit is composed of the sending and receiving sides,voiced with MIC,the weak voice signal is amplified by a common transmitting amplifier,and the circuit is composed of electricity.The optical modulation circuit completes the modulation of the red light by voice,which is the sending side;the optical fiber transmits the modulated optical signal to another room.The receiving side completes the optical-electrical conversion by the phototransistor,the electrical signal is amplified by the preamplifier,the power amplification,and finally by the loudspeaker.The connection of optical fiber is not made by professional optical fiber transceiver,which is made by students amateur.Although the communication distance and communication effect are not very good,the transmission effect of 10M can be realized completely.

关 键 词：LED 电光调制 光电转换 前置放大 功率放大 光纤 

分 类 号：TP271[自动化与计算机技术—检测技术与自动化装置]