本文選題：摻鉍光纖 + 自發(fā)輻射譜　； 參考：《北京郵電大學(xué)》2015年碩士論文

【摘要】：隨著數(shù)據(jù)流量的高速增長(zhǎng),人們對(duì)光纖通信網(wǎng)的傳輸容量要求越來越高。目前摻鉺光纖放大器的工作波長(zhǎng)僅僅覆蓋了C和L波段(1535-1625nm),依然有大部分光纖通信窗口低損耗波段沒有被充分利用。覆蓋全光通信窗口的寬帶光纖放大器將是未來高速通信系統(tǒng)的一個(gè)關(guān)鍵器件。摻鉍光纖具有超寬帶近紅外光輻射特性,可用于制作寬帶光源、寬帶光纖放大器和寬帶可調(diào)諧激光器。本文對(duì)摻鉍光纖的寬帶發(fā)光及放大特性進(jìn)行了研究。主要工作內(nèi)容包括： (1)研究光的受激輻射光放大理論,推導(dǎo)出關(guān)于鉍的速率方程組和功率傳輸方程組。建立鉍相關(guān)單發(fā)光中心的放大模型。 (2)實(shí)驗(yàn)測(cè)量三種不同組份摻雜的摻鉍光纖放大自發(fā)輻射譜(Amplified spontaneous emission, ASE),并分析了不同組份的作用。采用830nm和980nm兩種泵浦源激發(fā)摻鉍光纖,通過分析前向和后向自發(fā)輻射譜,推測(cè)發(fā)光中心。通過雙泵浦實(shí)驗(yàn),對(duì)摻鉍光纖的兩個(gè)發(fā)光中心的獨(dú)立性進(jìn)行了驗(yàn)證。 (3)基于光放大理論和Giles模型,建立了適于數(shù)值求解的偏微分方程組。利用數(shù)值仿真方法研究了摻鉍光纖放大器的基本參數(shù)：增益和噪聲指數(shù)。研究了泵浦結(jié)構(gòu)對(duì)信號(hào)增益的影響。數(shù)值模擬了不同鉍離子濃度摻雜光纖的ASE譜。
[Abstract]:With the rapid growth of data flow, the transmission capacity of optical fiber communication network is becoming more and more demanding. At present, Erbium-doped fiber amplifiers only cover C and L bands 1535-1625nm, and most of the low loss bands of optical fiber communication windows are not fully utilized. Wideband fiber amplifier covering all optical communication windows will be a key component of high-speed communication system in the future. Bismuth doped fiber has the characteristics of ultra-wideband near infrared radiation and can be used to fabricate broadband light source, broadband fiber amplifier and broadband tunable laser. In this paper, the broadband luminescence and amplification characteristics of bismuth doped fiber are studied. The main tasks include: 1) the theory of stimulated radiation amplification of light is studied, and the rate equations and power transmission equations about bismuth are derived. The amplification model of bismuth related single luminescence center was established. The amplified spontaneous emission (ASE) spectra of three bismuth doped fiber doped with three different components were measured experimentally and the effects of different components were analyzed. Bismuth doped optical fibers were excited by 830nm and 980nm pump sources. The photoluminescence centers were estimated by analyzing the forward and backward spontaneous emission spectra. The independence of two luminous centers of bismuth doped fiber is verified by double pump experiment. 3) based on the optical amplification theory and Giles model, the partial differential equations which are suitable for numerical solution are established. The gain and noise index of bismuth doped fiber amplifier are studied by numerical simulation. The effect of pump structure on signal gain is studied. The ASE spectra of fiber doped with different bismuth ion concentrations were numerically simulated.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN929.11;TN722

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