multimode waveguide 中文意思是什麼
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The numerical and experimental results of this y - branch structure indicate that the proposed y - branch structure, without extra fabrication technologies, has a lower excess loss as compared with the conventional ones. optimal designs of the structural parameters for the multimode interference coupler are carried out. low loss and high uniformity of the multimode interference couplers are achieved when the waveguide is weakly guiding
研究了y分支耦合器中分支頂端間距（為工藝製作方便）帶來的附加損耗，提出了低損耗新型y分支耦合器結構，並給出了相關結構參數的優化設計方法，我們的理論計算和實驗測試結果均表明，該新型結構可以在常規光波導製作工藝下提高器件的指標。 -
We studied the multimode coupling matrix of the key waveguide discontinuity, waveguide step, with the modal fields expansions in waveguides. and obtained the relations with the multimode coupling matrix, the generalized admittance matrices and the generalized scattering matrices. we have compiled some subroutines in fortran 95 programming language to compute the multimode coupling matrix, admittance matrices, scattering matrices and their operates with each other
並利用fortran95程序設計語言編寫了用來計算波導階梯的多模耦合矩陣、多模耦合矩陣與廣義導納矩陣的級聯、廣義導納矩陣之間的級聯以及廣義導納矩陣和廣義散射矩陣之間的互相換算等的矩形波導平面不連續性模式分析的子程序。 -
Applying an exact modal propagation analysis method and self - imaging theory, i analyzed the principle of mmi coupler. then, the self - imaging effect in graded - index waveguide has been analyzed and simulated using three - dimensional bpm. considering normal technology error, a low loss y - branch structure ( symmetric or asymmetric ) with a multimode waveguide transition section is introduced and designed
在設計y分支波導結構時，考慮常規工藝誤差的影響，引入多模波導作為y分支波導結構的過渡區，利用參數空間搜索法來設計結構參數，實現低損耗的y分支結構。 -
To increase the energy storage and reduce fiber nonlinearities, the feasibility of multimode fiber being a waveguide in fiber amplifiers and fiber lasers have been discussed
基於這樣的限制，本文探討了以多模光纖作為光纖放大器和光纖激光器增益介質波導的可行性。
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