本文關(guān)鍵詞：拉曼效應(yīng)對低雙折射光纖偏振態(tài)的影響與演化分析　出處：《內(nèi)蒙古大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 低雙折射光纖 拉曼效應(yīng) 偏振態(tài) 輸入功率

【摘要】：在準(zhǔn)連續(xù)情況下,通過求解低雙折射光纖中含有拉曼效應(yīng)的右旋與左旋圓偏振光所滿足的耦合非線性薛定諤方程,研究了低輸入功率和高輸入功率情形在加入拉曼效應(yīng)前后,有效偏振拍長和輸入功率的變化關(guān)系,并得到了歸一化功率以及相位差的解析解.利用解析解,推導(dǎo)出了橢圓率和方位角的表達(dá)式,研究了拉曼效應(yīng)和傳輸距離對偏振態(tài)演化的影響,并用相平面法對橢圓率和歸一化方位角隨著歸一化輸入功率的變化進行了直觀描述.結(jié)果表明：低雙折射光纖在傳輸?shù)倪^程中,無論入射光的偏振是沿著慢軸或沿著快軸,拉曼效應(yīng)均改變了入射光偏振態(tài)演變的周期,同時改變了入射光的傳輸距離；傳輸距離同樣是影響其偏振態(tài)穩(wěn)定性的因素,亦改變了橢圓率和歸一化方位角的演變周期以及振蕩幅度.本文由三個部分組成：引言、正文、總結(jié),引言中主要介紹了本課題的研究背景以及研究的意義等內(nèi)容；正文分兩個部分進行介紹：主要介紹了拉曼效應(yīng)對低雙折射光纖偏振態(tài)的影響和演化分析的理論推導(dǎo)和過程分析,最后進行了總結(jié).得出拉曼效應(yīng)改變了低雙折射光纖偏振態(tài)的周期,同時改變了傳輸距離。傳輸距離同樣是影響其偏振態(tài)穩(wěn)定性的因素,改變了橢圓率和歸一化方位角的演變周期以及振蕩幅度.
[Abstract]:In quasi-continuous case, the coupled nonlinear Schrodinger equation of right-handed and left-handed circular polarized light with Raman effect in low birefringence fiber is solved by solving the coupled nonlinear Schrodinger equation. The relationship between the effective polarization beat length and the input power in the case of low input power and high input power before and after the addition of Raman effect is studied, and the analytical solutions of normalized power and phase difference are obtained. The expressions of ellipticity and azimuth are derived, and the effects of Raman effect and transmission distance on the evolution of polarization state are studied. The change of ellipticity and normalized azimuth with normalized input power is described intuitively with the phase plane method. The results show that the low birefringence fiber is in the process of transmission. No matter whether the polarization of incident light is along the slow axis or along the fast axis, the Raman effect changes the period of polarization state evolution and the transmission distance of incident light. Transmission distance is the same factor that affects the stability of polarization state. It also changes the evolution period and oscillation amplitude of ellipticity and normalized azimuth. This paper consists of three parts: introduction, text and summary. The introduction mainly introduces the research background and significance of this topic. The main body is divided into two parts: the influence of Raman effect on the polarization state of low birefringence fiber and the theoretical derivation and process analysis of the evolution analysis of the Raman effect on the polarization state of low birefringence fiber are introduced. Finally, it is concluded that Raman effect changes the period of polarization state of low birefringence fiber, and changes the transmission distance. The transmission distance is also the factor that affects the stability of polarization state of low birefringence fiber. The evolution period and oscillation amplitude of ellipticity and normalized azimuth are changed.
【學(xué)位授予單位】：內(nèi)蒙古大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TN253

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本文編號：1428271