OOK is functionally identical to CW (Continuous Wave) that has long been used for Morse code transmissions, but at a much higher character or data rate. ASK /OOK is much cheaper and easier to ...

ASK modulation’s main advantage lies in its simplicity, which allows for very cheap hardware. It is also very bandwidth-efficient since it only outputs on a narrow frequency band.

The advent of all‐optical modulation format conversion techniques has fundamentally reshaped modern optical communications. These techniques enable the direct manipulation of optical signals in ...