Why is fiber communication larger than cable communication?
The different wavelengths in the optical fiber as the transmission channel in the optical fiber, the presence of coarse wave and dense wave wavelength, with coarse wave can achieve 16 wavelength in an optical fiber in multiplexing, that is to say, an optical fiber can transmit 16 business, this is the CWDM coarse wavelength division multiplexing device; if dense wavelength division as the wavelength channel transmission, can achieve a few times coarse wave;
Because the transmission distance of cable is not long (longer distance transmission needs more amplification equipment and increases the difficulty of later maintenance), it restricts the application on the trunk line.
In one case, the rate of the cable is relatively small compared to the 100G top rate of the fiber! I recently in learning this knowledge, this is the finite people tell me, and I hope to help you.
