Power and data transmission to substrate support in plasma chambers via optical fiber

A system comprising:

• a first optical transmitter coupled to a first end of a fiber optic cable;
• a first optical receiver coupled to the first end of the fiber optic cable;
• a controller to supply power to the first optical transmitter to transmit a first optical signal and a first optical data through the fiber optic cable;
• and
• a substrate support assembly configured to support a substrate during substrate processing in a processing chamber, the substrate support assembly comprising:
• a second optical receiver embedded in the substrate support assembly coupled to a second end of the fiber optic cable to receive the first optical signal and the first optical data;
• a power converter embedded in the substrate support assembly to generate DC power based on the first optical signal and the first optical data received by the second optical receiver;
• a first circuit embedded in the substrate support assembly to receive the DC power and to receive a second data from a sensor disposed in the substrate support assembly in response to the first optical data, the sensor configured to sense a parameter associated with a process performed in the processing chamber;
• and
• a second optical transmitter embedded in the substrate support assembly coupled to the second end of the fiber optic cable to transmit the second data as a second optical data through the fiber optic cable based on power received from the first circuit.