当前位置:
和泉文库 >
物理 > 河北师范大学:《电动力学》课程教学资源(PPT课件讲稿)第七章 光波导技术(7.5.2)Splitters and couplers
河北师范大学:《电动力学》课程教学资源(PPT课件讲稿)第七章 光波导技术(7.5.2)Splitters and couplers
What needed? to combine signals and/or to split them multiple ways up to 1000X1000 for WDM LANS three important characteristics Return Loss the amount of power that is reflected and thus lost Insertion LoSs the amount of signal lost in the total transit through the device Excess Loss additional loss of a device
文件格式:PPT,文件大小:231KB,售价:6.18元
文档详细内容(约21页)
Solution R=cos(√K2+2-)+~ sin(√K2+82z) K2+δ iK sin(√K2+62z) K2+6
Solution sin( ) cos( ) sin( ) 2 2 2 2 2 2 2 2 2 2 K z K j K S K z K j R K z d d d d d d + + = - + + = + +
Mode coupling between two fibres δ=0,R2(z)=cos2(Kz) 2D S(z=sin(Kz) ° coupling length 2D o=/2K Coupling coefficient 4ka Ka=K -a(d-2D) 12 21 β(1+aD(kx+a2) k2=n2k2-B2;a2=B2-n2k
Mode coupling between two fibres d=0,R2 (z)=cos2 (Kz) S 2 (z)=sin2 (Kz) • coupling length : L0 =p/2K • Coupling coefficient : 2 0 2 2 2 2 2 2 0 2 1 2 1 ( 2 ) 2 2 1 2 2 1 1 2 2 1 ; (1 )( ) 4 k n k n k e D k k K K x d D x x = - = - + + = = - - b b b 2D 2D d n2 n1 n2 n1 n2
点击进入文档下载页(PPT格式)
共21页,试读已结束,阅读完整版请下载
点击购买下载(PPT)
下载及服务说明
- 购买前请先查看本文档预览页,确认内容后再进行支付;
- 如遇文件无法下载、无法访问或其它任何问题,可发送电子邮件反馈,核实后将进行文件补发或退款等其它相关操作;
- 邮箱: