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1. Based on the maxwell - field equations , we derive the coupled - mode equations that describe the interaction between the modes
   在分析相關(guān)研究文獻的基礎(chǔ)上,本文從光纖中的麥克斯韋方程組出發(fā),推導耦合模方程。
2. In chapter 5 , a long - period fiber grating with rectangular index modulation is studied by the coupled - mode theory . the couple - mode equations that describe the mode coupling in this kind of grating are presented
   本章仍以耦合模理論為基礎(chǔ)，首先對該類型光柵的折射率微擾進行展開，進而推導其相應的耦合系數(shù)和建立耦合模方程。
3. Furthermore , we analyze fiber bragg grating of a constant refractive index modulation and period , found the coupled - mode equations that describe interactions between the forward - propagating guided core mode and the backward - propagating guided core mode itself
   并用耦合模理論對最簡單的均勻光纖布拉格光柵進行分析，建立其耦合模方程，并給出解析解。
4. 2 ) the coupled - mode equation analyzing the characteristics of fiber grating is deduced step by step . two methods - the transfer matrix metod and the runge - kuttar method are compared , which are often used to solve the coupled - mode equation
   2 )詳細推導用于分析光纖光柵特性的耦合模方程，重點對兩種解耦合模方程的方法進行比較：龍格-庫塔法和傳輸矩陣法。
5. The analytical expressions of reflectance and penetration depth of a light beam transmitted in the back - side - coated chirped mirror are obtained through couple - mode equations with boundary conditions
   摘要應用耦合模方程對光波在后端鍍膜啁啾反射鏡中的傳播規(guī)律進行分析計算，在分析的過程中加入了邊界條件的影響，推導出后端鍍膜啁啾反射鏡在理想情況下的反射率和穿透深度的解析表達式。