Optical comm. systems question - capacity, bandwidth

[pmonon]

Optical comm. question

Optical fiber/optical comm. systems are said to have a very high capacity compared to the others like microwave. Is it because optical systems transmit light signals which have a high frequency? But isnt the capacity related to bandwidth rather than frequency? In this context, when we have a bandwidth of 100 GHz with 10 THz as the central carrier freq., is it true that this gives the same capacity when we have the same bandwidth with 500 GHz as the carrier freq.?

 

[medra]

Re: Optical comm. question

hi
The BW is related to Fc , you can't have Fc=10Mhz , and BW=10Ghz!!!!!!!!!!
But if you have 10THz carrier , you could have Bw=10G, as a rule of thumb
BW=Fc/10 ( or slightly more), Got it?

 

[pmonon]

Re: Optical comm. question

hi
The BW is related to Fc , you can't have Fc=10Mhz , and BW=10Ghz!!!!!!!!!!
But if you have 10THz carrier , you could have Bw=10G, as a rule of thumb
BW=Fc/10 ( or slightly more), Got it?

Makes sense..thanks! Can you suggest more resource on this?