本文選題：Ⅴ-Ⅰ傳輸矩陣法 + 啁啾相移光纖光柵　； 參考：《北京交通大學(xué)》2015年碩士論文

【摘要】：相移光纖光柵是通過在常規(guī)布拉格光纖光柵(FBG)的某些特定位置引入相 移而形成,相比普通FBG,相移光柵可以在反射譜的阻帶中打開一個(gè)或多個(gè)線寬 極窄的透射窗口,實(shí)現(xiàn)透射型濾波。而且,其透射窗口的位置可以通過改變相移 量來調(diào)整,窗口的通透率以及線寬也可以根據(jù)通過調(diào)整相移點(diǎn)的位置來改變,因 而可以根據(jù)不同的需要合理設(shè)計(jì)相移的數(shù)量、大小及位置,獲得不同線寬和滾降 特性的透射峰,并且相移光柵還具有插入損耗低、偏振無關(guān)等優(yōu)點(diǎn)。因此其在窄 帶濾波、光纖激光器、波分解復(fù)用器、全光邏輯器件以及光纖傳感等領(lǐng)域得到廣 泛應(yīng)用,成為新型光器件的研究熱點(diǎn)之一。啁啾相移光纖光柵是通過在啁啾光纖光柵中引入相移而形成,因此綜合了啁 啾光柵和相移光柵的一些重要特性,其反射帶寬和透射窗口的線寬可以在很寬的 范圍內(nèi)調(diào)諧,更加適用于多通道濾波。本文正是基于啁啾相移光纖光柵優(yōu)良的濾 波特性,通過在線性啁啾光柵中引入可調(diào)諧相移來實(shí)現(xiàn)波長和帶寬均可調(diào)諧的多 波長濾波器,從而在實(shí)際應(yīng)用中實(shí)現(xiàn)更加靈活的波長選擇。本文完成的主要工作 和取得的成果如下： 1.基于規(guī)則光波導(dǎo)模式的正交性,詳細(xì)推導(dǎo)了相移光纖光柵的耦合模方程,對(duì)相移光纖光柵的三種分析方法,傳輸矩陣法、多層膜法以及V-I傳輸矩陣法,進(jìn)行了詳細(xì)比較和誤差分析,驗(yàn)證了V-I傳輸矩陣法能夠滿足分析的精度,并且大大提高了運(yùn)算效率。 2.利用V-I傳輸矩陣法,對(duì)均勻相移光纖光柵和啁啾相移光纖光柵的透射譜特性進(jìn)行比較分析,對(duì)比總結(jié)了兩者在不同相移參數(shù)及光柵參數(shù)下的傳輸規(guī)律,為新型相移光纖光柵器件的研究提供依據(jù)。 3.實(shí)驗(yàn)研究了壓電陶瓷(PZT)在線性啁啾光纖光柵中引入一個(gè)可調(diào)諧的且穩(wěn)定的相移的基本特性,并分析總結(jié)了相移位置間隔及啁啾系數(shù)對(duì)啁啾相移光纖光柵陷波濾波器的波長間距的影響。結(jié)果表明,波長間距隨相移位置間隔和啁啾系數(shù)的增長呈線性增長,且前者線性增長的靈敏度最大可達(dá)0.383nm/cm。在實(shí)際應(yīng)用中可依據(jù)這兩個(gè)線性關(guān)系來優(yōu)化選擇相移位置、相移數(shù)量及啁啾系數(shù),并以PZT來控制相移量變化,設(shè)計(jì)出滿足不同特性的多波長濾波器。
[Abstract]:Phase-shifted fiber gratings are introduced by introducing phase at specific locations of conventional fiber Bragg gratings (FBGs). The phase shifting grating can open one or more linewidths in the stopband of the reflection spectrum compared with the ordinary FBGs. Very narrow transmission window to achieve transmission-type filtering. Moreover, the position of its transmission window can be changed by changing the phase shift The window permeability and linewidth can also be adjusted by adjusting the position of the phase shift point, because The number, size and position of phase shift can be reasonably designed according to different needs, and different linewidth and roll down can be obtained. The phase-shifted grating also has the advantages of low insertion loss and polarization-independent. So it's narrow. The fields of band filter, fiber laser, wave decomposition multiplexer, all optical logic device and optical fiber sensor have been widely used. Universal application has become one of the research hotspots in new optical devices. Chirped phase-shifted fiber gratings are formed by introducing phase shift into chirped fiber gratings, so chirped fiber gratings are synthesized. Some of the important properties of the chirped grating and phase-shifted grating are reflected bandwidth and the linewidth of the transmission window can be very wide Range tuning is more suitable for multi-channel filtering. This paper is based on the excellent filter of chirped phase-shifted fiber grating. By introducing tunable phase shift into linearly chirped gratings to achieve tunable wavelengths and bandwidths Wavelength filter, thus realizing more flexible wavelength selection in practical applications. Main work accomplished in this paper And the results achieved are as follows: 1. Based on the orthogonality of regular optical waveguide modes, the coupled mode equations of phase-shifted fiber gratings are derived in detail. The three analytical methods of phase-shifted fiber gratings, the transfer matrix method, the multilayer membrane method and the V-I transmission matrix method, are presented. A detailed comparison and error analysis are carried out to verify that V-I transmission matrix method can meet the accuracy of the analysis and greatly improve the efficiency of calculation. 2. By means of V-I transmission matrix method, the transmission spectrum characteristics of homogeneous phase-shifted fiber grating and chirped phase-shifted fiber grating are compared and analyzed, and the transmission rules of the two gratings under different phase shift parameters and grating parameters are compared and summarized. It provides a basis for the study of novel phase-shifted fiber grating devices. 3. The basic characteristics of introducing a tunable and stable phase shift into a linearly chirped fiber grating by piezoelectric ceramics PZT are experimentally investigated. The influence of phase shift space and chirp coefficient on the wavelength spacing of chirped phase-shifted fiber grating notch filter is analyzed and summarized. The results show that the wavelength spacing increases linearly with the increase of phase shift spacing and chirp coefficient, and the sensitivity of the former increases linearly to 0.383 nm / cm ~ (-1). In practical application, the phase shift position, the number of phase shifts and the chirp coefficient can be optimized according to these two linear relations. The phase shift variation can be controlled by PZT, and a multi-wavelength filter with different characteristics can be designed.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN713

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 余華清;;啁啾相移光纖光柵的多層薄膜分析新方法[J];傳感技術(shù)學(xué)報(bào);2006年03期

2 余重秀,王旭,劉海濤,任建華,王葵如;光纖光柵的不同折射率調(diào)制及其實(shí)現(xiàn)方法[J];光電子·激光;2000年02期

3 趙東暉,楊秀峰,劉志國,李智紅,葛春風(fēng),盛秋琴,呂可誠,董孝義;相移光纖光柵的特性分析及其應(yīng)用[J];光電子·激光;1998年03期

4 李志全,黃麗娟,王莉,吳飛,朱丹丹;不同折射率調(diào)制的光纖光柵的特性及其應(yīng)用[J];光學(xué)技術(shù);2003年06期

5 陳根祥,劉春寧,李唐軍,張勁松,簡水生;長周期光纖光柵的研究[J];光學(xué)學(xué)報(bào);2000年05期

6 魯韶華;許鷗;馮素春;董小偉;簡水生;;基于啁啾相移光纖光柵的濾波器設(shè)計(jì)及應(yīng)用[J];光學(xué)學(xué)報(bào);2008年09期

7 蒲會(huì)蘭;;相移光柵的特性及其在上下話路復(fù)用器中的應(yīng)用[J];信息通信;2009年02期

8 秦子雄,杜衛(wèi)沖,曾慶科,劉寧,郭旗,廖常俊,劉頌豪,孫健,余重秀;線性啁啾光纖光柵的光學(xué)切趾包絡(luò)函數(shù)、最佳包絡(luò)和最佳長度的數(shù)值研究[J];中國激光;2000年01期

9 魯韶華;許鷗;董小偉;劉艷;李彬;簡水生;;啁啾相移光纖光柵的反射譜特性[J];中國激光;2008年04期

10 蔡璐璐;吳飛;王玉田;;相移光纖光柵的反射譜特性分析[J];中國激光;2009年08期

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