Metrology of Advanced Optical Modulation Formats
The fundamental methods of encoding digital information onto an optical carrier are identical to the methods that have been developed and are widely used in the RF and wireless world. The only difference between the optical and the radio transmission is the frequency of the carrier. In both cases, the channel bandwidth is just a small fraction of the carrier frequency; however, that small fraction at the optical frequencies can reach bandwidth of tens of GHz.
- Agilent Technologies, Inc., Chemical Analysis