本文關(guān)鍵詞： 光纖光學(xué) 光場相位鎖定 鎖模腔 注入鎖定 光電振蕩器　出處：《貴州大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：光子信息技術(shù)需要在光域完成光子信號(hào)的產(chǎn)生和操控,而光場的相位鎖定是其中的關(guān)鍵。為了實(shí)現(xiàn)靈活的光子信號(hào)處理和操控,光場的相位鎖定技術(shù)越來越吸引人們的關(guān)注。鎖相環(huán)技術(shù)、鎖模腔技術(shù)和注入鎖定技術(shù)在光場相位鎖定方面各有優(yōu)勢,但在如何實(shí)現(xiàn)寬帶靈活的光場相位鎖定方面還有巨大的研究空間。本文的主要工作是研究光場相位鎖定技術(shù)的原理和方法,通過合理設(shè)計(jì)來實(shí)現(xiàn)光場的相位鎖定,論文主要通過以下方面展開:1.對(duì)光纖通信系統(tǒng)的發(fā)展過程及現(xiàn)狀進(jìn)行詳細(xì)闡述,并對(duì)能夠?qū)崿F(xiàn)不同光場之間的相位鎖定的三種技術(shù)—鎖相環(huán)、鎖模腔和注入鎖定技術(shù)的基本原理進(jìn)行分析。2.提出一種基于光纖鎖模腔的模式相位鎖定實(shí)驗(yàn)方案。在這個(gè)實(shí)驗(yàn)方案中,通過改變調(diào)制器的位置實(shí)現(xiàn)了環(huán)形腔以及法布里-珀羅(F-P)腔兩種腔型的主動(dòng)鎖模激光器的轉(zhuǎn)變。通過比較兩種腔型的鎖模效果可以得出以下結(jié)論:在F-P腔結(jié)構(gòu)下,鎖模脈沖幅度均衡性在一定程度上得以提高,并且提高鎖模脈沖的重復(fù)頻率,實(shí)驗(yàn)得到的鎖模脈沖頻率是調(diào)制頻率的六倍頻。3.提出基于耦合光電振蕩器的模式匹配與鎖定實(shí)驗(yàn)方案并進(jìn)行實(shí)驗(yàn)驗(yàn)證該方案可以利用全光的方法來實(shí)現(xiàn)光場的相位鎖定。實(shí)驗(yàn)中通過調(diào)制器位置的改變,分別實(shí)現(xiàn)雙腔以及三腔耦合光電振蕩器,利用這種簡單有效的方法實(shí)現(xiàn)多腔結(jié)構(gòu)且沒有添加更多的有源器件。在實(shí)驗(yàn)中,成功的獲得了相當(dāng)良好的20-GHz單縱模微波信號(hào)。4.提出基于注入鎖定效應(yīng)實(shí)現(xiàn)OEO中的模式選擇和鎖定方案。在實(shí)驗(yàn)中得到單環(huán)結(jié)構(gòu)的OEO,通過注入鎖定DFB能夠鎖定某一個(gè)振蕩模式,然后與載波在PD中拍頻產(chǎn)生拍頻信號(hào),外腔激光器所發(fā)出的光與DFB中被鎖定的振蕩模式的波長差決定了拍頻信號(hào)的頻率。這個(gè)相位鎖定方案采用單環(huán)結(jié)構(gòu)OEO產(chǎn)生微波信號(hào)的頻率為18GHz到20GHz。
[Abstract]:Photonic information technology needs to complete the generation and manipulation of photon signals in the optical domain, and the phase locking of the light field is the key, in order to achieve flexible processing and manipulation of photon signals. The phase locking technology of light field has attracted more and more attention. The phase-locked loop technology, the mode locked cavity technology and the injection locking technology have respective advantages in the field phase locking. However, there is still a huge research space on how to realize the wide band flexible optical field phase locking. The main work of this paper is to study the principle and method of the optical field phase locking technology. Through the rational design to achieve the phase locking of the optical field, the thesis mainly through the following aspects of the development of optical fiber communication system and the current situation of the development process is described in detail. And the phase locked loop, which can realize the phase locking between different light fields, is introduced. The basic principle of mode locking cavity and injection locking technology is analyzed. 2. A mode phase locking experiment scheme based on optical fiber mode-locking cavity is proposed. The ring cavity and Fabry-Perot F-P are realized by changing the position of modulator. The conversion of two kinds of cavity active mode-locked lasers. By comparing the two kinds of cavity mode locking effect, we can draw the following conclusion: under the F-P cavity structure. The amplitude equalization of mode-locked pulse can be improved to a certain extent and the repetition rate of mode-locked pulse can be improved. The mode-locked pulse frequency obtained by experiment is six times frequency of modulation frequency. 3. An experimental scheme of mode matching and locking based on coupled optoelectronic oscillator is proposed, and the experiment is carried out to verify that the scheme can realize the light field by all-optical method. In the experiment, the position of the modulator is changed. The two-cavity and three-cavity coupled optoelectronic oscillators are realized, and the multi-cavity structure is realized by using this simple and effective method without adding more active devices. A very good 20-GHz single-longitudinal mode microwave signal .4. the mode selection and locking scheme of OEO based on injection locking effect is proposed. The OEO with single loop structure is obtained in the experiment. The DFB can be locked in a certain oscillation mode by injection locking, and then the beat signal is generated with the carrier in the PD. The frequency of the beat frequency is determined by the wavelength difference between the light emitted by the external cavity laser and the locked oscillation mode in DFB. The frequency of microwave signal generated by single loop OEO is 18GHz. Up to 20 GHz.
【學(xué)位授予單位】：貴州大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN248

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