闪耀光纤光栅在ROF系统中的应用  

Application of Tilted Fiber Bragg Grating at Radio over Fiber System

作　　者：吴丹[1] 宁提纲[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044

出　　处：《光电技术应用》2014年第5期42-46,共5页Electro-Optic Technology Application

基　　金：国家973项目资助(2010CB328206)

摘　　要：对ROF(radio over fiber,光载射频)系统在应用过程中的调制方式进行了分析,同时通过一系列实验证明单边带调制更适合应用于ROF系统的通信过程。因此,基于闪耀光纤光栅(TFBG,tilted fiber bragg grating)的复耦合模理论对光栅的谱的性能进行了分析和实验,不难发现,经过对TFBG进行特定的设计后,可以将TFBG应用于ROF系统中对双边带信号进行反射或者透射实现单边带调制,这样既减少了输出振幅随着距离的周期性变化,也提高了信号的传输效率和接收灵敏度。The modulation mode of radio over fiber （ROF） system in application process is analyzed. Experimental results show that single side band modulation is more suitable for the communication process of ROF system. Based on complex coupled mode theory of tilted fiber Bragg grating （TFBG）, the spectrum characteristics of the grat- ing are analyzed and tested. After special designing, TFBG can be used in ROF system to reflect or transmit double side band signals to realize single side band modulation. So output amplitude changing with distance in period is reduced and transmission efficiency and receiving sensitivity of the signals are improved.

关 键 词：闪耀光纤光栅 ROF系统 单边带调制 

分 类 号：TN828.6[电子电信—信息与通信工程] TN913.7