摘要脉冲发生器是OTDR（光时域反射计）系统中的关键部分，不仅需要与声光或电光调制器相连以实现光脉冲调制，也涉及到后期A/D转换过程中数据的同步采集。本设计通过FPGA模块与PIC单片机、PIC单片机与计算机之间的数据传输，最终实现只要在计算机终端输入延时、脉宽、周期的设定值，输出的实际脉冲就能作出相应变化的目的。81751

毕业论文关键词  FPGA  OTDR   脉冲发生器  PIC

毕业设计说明书外文摘要

Title    Real-time data  acquisition and processing in  OTDR based on FPGA                                                 

Abstract Pulse generator is a key part of OTDR (optical time domain reflectometry) system。 On one hand, it is connected to and AOM or EOM to realize optical pulse modulation。 On the other hand , it relates to  synchronous data acquisition during the latter  process of  A/D  conversion 。This design uses data transmission between FPGA module and PIC microcontroller as well as PIC microcontroller and computer ,finally it achieves the purpose that once the computer terminal is given a set value of pulse delay, width or period, actual output pulse can make corresponding changes。

Keywords   FPGA     OTDR     pulse generator     PIC