本文選題：光注入半導體激光器 + 單周期(P1)振蕩��； 參考：《西南大學》2015年碩士論文

【摘要】：近年來,一種新興的光載無線(Radio-over-Fiber, RoF)技術逐漸受到人們的廣泛關注,其采用光纖鏈路傳輸無線電信號,能夠?qū)⒐饫w通信和微波通信良好結合起來。由于RoF具有抗干擾性強、保密性強、覆蓋面積廣、低成本易安裝等優(yōu)點,因此逐漸成為通信技術的研究熱點。RoF技術中的關鍵一項便是光微波的獲取,最近,一種基于光注入半導體激光器所表現(xiàn)的單周期(P1)振蕩非線性動力學狀態(tài)獲取微波信號的方法受到相關領域?qū)W者的廣泛關注。利用該方法不僅可以直接產(chǎn)生具有單邊帶(SSB)光譜結構的微波信號而且其頻率高、連續(xù)可調(diào),然而這種方法產(chǎn)生的微波信號頻率不夠穩(wěn)定、需要引入額外的頻率鎖定技術。本文首先基于L-K模型,理論研究了利用光纖布拉格光柵(FBG)反饋對外光注入半導體激光器產(chǎn)生的微波信號進行頻率鎖定的技術。結果表明,通過調(diào)節(jié)注入強度,光注入半導體激光器能夠產(chǎn)生連續(xù)可調(diào)的微波信號；通過引入微弱的FBG反饋且精細調(diào)節(jié)反饋強度,微波線寬將從MHz量級被壓縮到幾十kHz。進一步的,我們分析了反饋強度及反饋時間對微波線寬的影響。此外,本文還提出了一種1/2次諧波鎖定技術,即采用一個頻率是光注入半導體激光器單周期振蕩頻率1/2的次諧波信號對所得到的微波信號進行頻率鎖定。實驗結果顯示：在合適的注入條件,處于單周期振蕩的光注入半導體激光器可輸出光譜具有單邊帶(SSB)結構的光生微波信號,但微波信號的線寬比較寬(MHz量級)；通過采用頻率為單周期振蕩頻率一半的次諧波信號調(diào)制光注入半導體激光器,可將微波線寬從十幾MHz壓縮到幾十kHz.進一步地,我們分析了次諧波調(diào)制信號的功率以及頻率對微波信號的相位噪聲的影響,并在由次諧波調(diào)制信號的功率和頻率構成的參數(shù)空間繪制出了能實現(xiàn)次諧波頻率鎖定的分布區(qū)域。
[Abstract]:In recent years, a new technology of radio-over-Fiber (RoFF) has been paid more and more attention. It uses optical fiber link to transmit radio signal, which can combine optical fiber communication with microwave communication. Because RoF has the advantages of strong anti-interference, strong confidentiality, wide coverage, low cost and easy installation, it has gradually become the research hotspot of communication technology .ROF technology is the acquisition of optical microwave. A method for obtaining microwave signals based on the nonlinear dynamic state of single period P1 oscillation of optical injection semiconductor lasers has been paid much attention by researchers in related fields. Not only can the microwave signal with single sideband SSBs spectral structure be directly generated by this method, but its frequency is high and continuously adjustable. However, the frequency of the microwave signal generated by this method is not stable enough, so it is necessary to introduce additional frequency locking technique. Firstly, based on the L-K model, the frequency locking technique of the microwave signal generated by external optical injection semiconductor laser using fiber Bragg grating (FBG) feedback is studied in this paper. The results show that the optical injection semiconductor laser can produce continuously adjustable microwave signal by adjusting the injection intensity, and by introducing weak FBG feedback and fine adjusting the feedback intensity, the microwave linewidth will be compressed from the order of MHz to tens of kHz. Furthermore, we analyze the effect of feedback intensity and feedback time on microwave linewidth. In addition, a 1 / 2 harmonic locking technique is proposed, in which the frequency of the microwave signal is locked by a subharmonic signal with a frequency of 1 / 2 of the single-period oscillation frequency of an optical injection semiconductor laser. The experimental results show that the optical injection semiconductor laser with single cycle oscillation can output the photogenerated microwave signal with single sideband SSBs structure under suitable injection conditions. However, the line width of microwave signal is wider than that of MHz, and the microwave linewidth can be compressed from more than ten MHz to tens of kHz by injecting subharmonic signal modulated light into semiconductor laser with frequency half of the frequency of single-period oscillation frequency. Furthermore, we analyze the influence of the power and frequency of the subharmonic modulation signal on the phase noise of the microwave signal. In the parameter space which is composed of the power and frequency of the subharmonic modulation signal, the distribution region which can realize the frequency locking of the subharmonic is plotted.
【學位授予單位】：西南大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TN248.4

【參考文獻】

相關期刊論文 前7條

1 顏森林;;光注入半導體激光器分岔與周期研究[J];光學學報;2009年04期

2 黃嘉明;陳舜兒;劉偉平;黃紅斌;;RoF技術分析及其應用[J];光纖與電纜及其應用技術;2007年02期

3 任小麗;吳正茂;樊利;夏光瓊;;雙光注入分布反饋半導體激光器的非線性動力學態(tài)實驗研究[J];科學通報;2014年03期

4 牛生曉;王云才;賀虎成;張明江;;光注入半導體激光器產(chǎn)生可調(diào)諧高頻微波[J];物理學報;2009年10期

5 劉觀輝;裴麗;寧提綱;高嵩;李晶;張義軍;;基于新型偏振穩(wěn)定毫米波發(fā)生器的光載無線通信下行鏈路[J];物理學報;2012年09期

6 陳興華;林曉東;吳正茂;樊利;曹體;夏光瓊;;基于偏振旋轉(zhuǎn)光反饋下的外光注入VCSEL產(chǎn)生高性能毫米波[J];物理學報;2012年09期

7 陳于淋;吳正茂;唐曦;林曉東;魏月;夏光瓊;;基于雙光注入鎖定1550nm垂直腔表面發(fā)射半導體激光器產(chǎn)生可調(diào)諧毫米波[J];物理學報;2013年10期

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本文編號：1913632