【摘要】：光學(xué)頻率梳是一種特殊的激光光源,其頻譜表現(xiàn)為一系列等間隔梳狀的頻率分量。鑒于其頻譜的特點(diǎn),光學(xué)頻率梳在密集波分復(fù)用、高精密測(cè)量、光譜分析及高精度標(biāo)頻等領(lǐng)域有著廣泛的應(yīng)用,如何產(chǎn)生平坦度好、邊模抑制比高、頻譜寬、穩(wěn)定性好以及譜線條數(shù)多的光學(xué)頻率梳一直是研究者追求的主要目標(biāo)。而光電振蕩器能夠產(chǎn)生頻譜純度高、相位噪聲低和穩(wěn)定性高的微波射頻信號(hào),因此本文對(duì)基于光電振蕩器的光學(xué)頻率梳生成技術(shù)開展了系列研究,主要的工作內(nèi)容如下:(1)綜合概述了光學(xué)頻率梳生成技術(shù)的研究背景和意義,回顧了國(guó)內(nèi)外對(duì)光學(xué)頻率梳生成技術(shù)和光電振蕩器的研究現(xiàn)狀。對(duì)光電振蕩器的結(jié)構(gòu)和基本原理進(jìn)行了研究,并分析了雙環(huán)結(jié)構(gòu)對(duì)邊模的抑制作用。(2)對(duì)光學(xué)頻率梳生成技術(shù)進(jìn)行了系統(tǒng)總結(jié),并研究了基于單偏振/偏振復(fù)用雙平行馬赫曾德爾調(diào)制器產(chǎn)生光學(xué)頻率梳的方案。研究結(jié)果表明,通過(guò)控制調(diào)制器的各個(gè)參數(shù),可以產(chǎn)生可調(diào)譜線條數(shù)的高平坦度、高邊模抑制比的光學(xué)頻率梳。(3)采用偏振復(fù)用雙平行馬赫曾德爾調(diào)制器,設(shè)計(jì)了一種基于光電振蕩器的光學(xué)頻率梳生成新方案。其中一路光分支偏振態(tài)的偏轉(zhuǎn)使得兩路光信號(hào)處于相互正交的偏振狀態(tài),在合波時(shí)不會(huì)發(fā)生干涉。同時(shí)利用光電振蕩器產(chǎn)生高頻譜純度的微波信號(hào),并作為調(diào)制器的射頻源,產(chǎn)生了平坦度好以及邊模抑制比高的光學(xué)頻率梳。并且通過(guò)靈活控制濾波器中心頻率、調(diào)制器參數(shù)和光源波長(zhǎng)得到了頻率間隔可調(diào)、譜線數(shù)目可調(diào)以及工作中心頻率可調(diào)的可重構(gòu)頻率梳。
[Abstract]:Optical frequency comb is a special laser light source, and its spectrum is a series of equal interval comb frequency components. In view of the characteristics of its spectrum, optical frequency comb has been widely used in dense wavelength division reuse, high precision measurement, spectral analysis and high precision frequency marking. How to produce optical frequency comb with good flatness, high edge mode rejection ratio, wide spectrum, good stability and large number of spectral lines has always been the main goal pursued by researchers. The photoelectric oscillator can generate microwave RF signals with high spectrum purity, low phase noise and high stability. Therefore, a series of research on optical frequency comb generation technology based on photoelectric oscillator is carried out in this paper. The main contents are as follows: (1) the research background and significance of optical frequency comb generation technology are summarized, and the research status of optical frequency comb generation technology and optoelectronic oscillator at home and abroad is reviewed. The structure and basic principle of photoelectric oscillator are studied, and the suppression effect of double loop structure on edge mode is analyzed. (2) the generation technology of optical frequency comb is systematically summarized, and the scheme of generating optical frequency comb based on single polarization / polarization combination with double parallel Mach Zendell modulator is studied. The results show that Gao Ping flatness with adjustable spectral line number and optical frequency comb with high edge mode rejection ratio can be generated by controlling the parameters of the modulator. (3) A new scheme of optical frequency comb generation based on optoelectronic oscillator is designed by using polarization reuse double parallel Mach Zendell modulator. The polarization state of one optical branch makes the two optical signals in the orthogonal polarization state, and there will be no interference in the combined wave. At the same time, the photoelectric oscillator is used to generate the microwave signal of high frequency spectrum purity, and as the radio frequency source of the modulator, the optical frequency comb with good flatness and high edge mode rejection ratio is produced. By flexibly controlling the central frequency of the filter, the modulator parameters and the wavelength of the light source, the reconfigurable frequency comb with adjustable frequency interval, adjustable number of spectral lines and adjustable working center frequency is obtained.
【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】：2017
【分類號(hào)】：TN752

【參考文獻(xiàn)】

相關(guān)期刊論文 前7條

1 王建;蔡海文;陳迪俊;瞿榮輝;;Generation of ultra-flat optical frequency comb using a balanced driven dual parallel Mach Zehnder modulator[J];Chinese Optics Letters;2015年06期

2 李e，

本文編號(hào)：2499290