光纤通信计算题 英文题 但计算简便.1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and

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光纤通信计算题 英文题 但计算简便.1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and

光纤通信计算题 英文题 但计算简便.1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and
光纤通信计算题 英文题 但计算简便.
1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and how many modes propagation in the fiber?
please explain the calculating results.

光纤通信计算题 英文题 但计算简便.1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and
.建议你去看一本光纤通信方面的书.
题目的意思是：光纤的纤芯折射率1.48,包层折射率与之相差0.01,问你数值孔径是多少?归一化截止频率是多少?有几个模式可以传播?

光纤通信计算题 英文题 但计算简便.1、consider a fiber with a 25um core radius,core index n1=1.48,and the core cladding index difference Δ=0.01,if ƒ=1320nm,what are the numerical aperture NA,the value of normalized frequency V and 用简便方法计算的计算题 数学计算题,要求简便方法计算, 计算题,要求用简便方法计算 计算题,要求用简便方法计算 计算题,要求用简便方法计算, 六年级简便计算题简便计算(70+1/68)*1/69 简便计算题简便计算46.3x0.56+5.38x5.6-1x.0.056 1道数学简便计算题132×88＋157×12怎么简便计算? 简便计算题：9.9×9.9+0.99 【简便计算!】 用简便方法一道计算题 用简便方法计算： 口算题,简便计算题,拖式计算题,竖式计算题. 求小升初简便计算题原题.越多越好. 六年级简便计算题 简便计算题 简便计算题, 简便计算题一道. 五年级数学简便计算题简便计算题及答案,30道(要有答案,五年级的简便计算