本文選題：光纖布拉格光柵　切入點：FPGA　出處：《北京交通大學》2015年碩士論文

【摘要】：隨著光信息科技的飛速發(fā)展,光纖傳感器技術(shù)已經(jīng)成為國內(nèi)外專家的研究重點。光纖布拉格光柵已是光纖傳感領(lǐng)域的重要光器件,被廣泛應用于航天航空、船舶航運、水壩橋梁、隧道建設(shè)、石油化工、醫(yī)學和電磁干擾等領(lǐng)域,而波長解調(diào)技術(shù)是其應用于傳感系統(tǒng)的最關(guān)鍵環(huán)節(jié)。 本文從光纖光柵傳感理論的基本原理出發(fā),對光纖布拉格光柵的解調(diào)方案進行了詳細分析和研究。提出一種以虛像相位陣列(VIPA)為核心光濾波器件,FPGA進行信號采集與處理的高速波長解調(diào)系統(tǒng)。本論文的主要工作如下： (1)從光纖光柵的傳感應用出發(fā),對高速波長解調(diào)技術(shù)的發(fā)展狀況進行了介紹,分析了光纖光柵傳感技術(shù)在實際應用的優(yōu)點和需要解決的問題。深入研究了現(xiàn)有光纖光柵波長解調(diào)方法,對解調(diào)方案的原理進行了詳細闡述,分析了各自的優(yōu)缺點。 (2)研究了VIPA的理論基礎(chǔ)并進行了數(shù)值分析,改進并優(yōu)化了一種基于VIPA的鋸齒形光譜濾波器。濾波器的結(jié)構(gòu)改進使其線性度和占空比都得到了較大改善,結(jié)構(gòu)也更加簡單,整個光路長度減小到10cm,而且在透射的工作方式下其損耗降低為3dB。 (3)詳細介紹了FPGA原理、開發(fā)流程和FPGA的硬件描述語言�；贔PGA的高速解調(diào)系統(tǒng)的核心光器件使用鋸齒形光譜濾波器,并利用差分檢測結(jié)構(gòu)提高系統(tǒng)抗干擾能力。使用Verilog語言進行FPGA的程序設(shè)計,并在ISE開發(fā)平臺上對各模塊進行了仿真驗證。最后搭建實驗測試環(huán)境,驗證了基于FPGA和鋸齒形光譜濾波器光纖光柵高速解調(diào)系統(tǒng)的功能。
[Abstract]:With the rapid development of optical information technology, fiber optic sensor technology has become the focus of experts at home and abroad. Fiber Bragg grating (FBG) is an important optical device in the field of optical fiber sensing, and has been widely used in aerospace, shipping and shipping. In the fields of dam bridge, tunnel construction, petrochemical industry, medicine and electromagnetic interference, wavelength demodulation technology is the most important part in sensing system. Based on the basic principle of fiber Bragg grating sensing theory, The demodulation scheme of fiber Bragg grating (FBG) is analyzed and studied in detail. A high speed wavelength demodulation system using VIPA as the core optical filter is proposed. The main work of this thesis is as follows:. 1) based on the application of fiber Bragg grating (FBG), the development of high speed wavelength demodulation technology is introduced. The advantages of fiber Bragg grating sensing technology in practical application and the problems to be solved are analyzed. The existing fiber grating wavelength demodulation methods are deeply studied. The principle of the demodulation scheme is described in detail and their advantages and disadvantages are analyzed. In this paper, the theoretical basis of VIPA is studied and numerical analysis is carried out. A sawtooth spectral filter based on VIPA is improved and optimized. The linearity and duty cycle of the filter are greatly improved and the structure is simpler. The length of the whole optical path is reduced to 10 cm, and the loss is reduced to 3 dB in the transmission mode. The principle of FPGA, the development process and the hardware description language of FPGA are introduced in detail. The core optical devices of high speed demodulation system based on FPGA are zigzag spectral filter. The differential detection structure is used to improve the anti-jamming ability of the system. The FPGA program is designed with Verilog language, and each module is simulated and verified on the ISE development platform. Finally, the experimental test environment is built. The function of fiber grating high speed demodulation system based on FPGA and sawtooth spectrum filter is verified.
【學位授予單位】：北京交通大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN253;TN763

【參考文獻】

相關(guān)期刊論文 前10條

1 朱為;FPGA器件及其應用[J];電子器件;1996年04期

2 楊海鋼;孫嘉斌;王慰;;FPGA器件設(shè)計技術(shù)發(fā)展綜述[J];電子與信息學報;2010年03期

3 張紀花;王硯波;王喜昌;;基于邊緣濾波的FBG解調(diào)系統(tǒng)[J];光電技術(shù)應用;2012年02期

4 姜德生,何偉;光纖光柵傳感器的應用概況[J];光電子·激光;2002年04期

5 周銳;喬學光;王若暉;高宏;楊揚;張敬花;;基于長周期光纖光柵線性邊緣濾波的地震波解調(diào)系統(tǒng)[J];光電子.激光;2011年07期

6 余有龍,譚華耀,鍾永康;基于干涉解調(diào)技術(shù)的光纖光柵傳感系統(tǒng)[J];光學學報;2001年08期

7 廖幫全,趙啟大,馮德軍,黃勇林,李杰,王躍,董孝義;光纖耦合模理論及其在光纖布拉格光柵上的應用[J];光學學報;2002年11期

8 劉波,童崢嶸,陳少華,曾劍,開桂云,董孝義,袁樹忠,趙啟大;一種長周期光纖光柵邊沿濾波線性解調(diào)新方法[J];光學學報;2004年02期

9 柯濤;朱濤;饒云江;段德穩(wěn);徐敏;;基于環(huán)形反射面的全光纖法-珀干涉式折射率傳感器[J];光學學報;2010年06期

10 王曉娜;王琦;陳樂華;于清旭;;基于掃描光纖激光器的光纖傳感解調(diào)儀研究[J];光子學報;2009年01期

，

本文編號：1691889