What is optical computing? Why it much better than electronic computing?

What is optical computing? Why it much better than electronic computing?

Ans:

• An optical computer is a computer that uses bound electrons in isolating crystals instead of free electrons in trans-istors of computation. 
• Its digital signals are modulated onto a carrier wave in the visible region. 
• No modulator or demodulator exists, because the base band offers only 10 GHz bandwidth whereas the visible band offers to THz. 
• It is similar to performing digital computation by a radio.
• Optical principles are used in this technology. 
• Data interference and waste of energy through electrons is not present in optical computers. 
• Polymers of optical computer have 1000 times faster function ability than silicon transistors. 
• Optical pathways in them can carry many different frequencies of light over each pathway.
• For example a calculation that might take a electronic computer more than eleven years to complete could be performed by an optical computer in an hour. 
• Optical data processing can perform several operations simultaneously much faster and easier than electronics.