Optical communication system having an operating wavelength `lambda` metre can use only x % of its source frequency as its channel band width. The system is to be used for transmitting T.V signals requiring a band width of F hertz. How many channels can this system transmit simultaneously? Show graphically how this number of channels varies with operating wavelength of the system.A. `lambdaF//Cx`B. `2_(Cx)//100lambdaF`C. ` cx//50lambdaF`D. `cx//100lambdaF`

Optical communication system having an operating wavelength `lambda` m

1.	Optical communication system having an operating wavelength `lambda` metre can use only x % of its source frequency as its channel band width. The system is to be used for transmitting T.V signals requiring a band width of F hertz. How many channels can this system transmit simultaneously? Show graphically how this number of channels varies with operating wavelength of the system.A. `lambdaF//Cx`B. `2_(Cx)//100lambdaF`C. ` cx//50lambdaF`D. `cx//100lambdaF`
Answer» Correct Answer - D Optical s ource frequency `=(c)/(lambda)Hz` Bandwidth of channel `=x% "of" (c)/(lambda)=(cx)/(100lambda)` Number of channels. `n=("Total bandwidth of channel")/("Bandwidth needed per channel")=(cx//100A)/(F)=(cx)/(100lambdaF)`

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