There are different types of computations which are being used in the computer industry to perform a number of calculations. This may use different sources for computing to do the work in a perfect manner. The optical computing is now used in many fields which involve the process of using the digital signals. Prior to this method of computing, electrons in electric current were used as the main resource. But in this new world, the demand for electric current is very much high and so the technologies have switched over to the visible light. The visible light contains the main material called photons which is the small elementary particle. These photons acts as the best carriers of electric force and so could be used to complete the task quickly. The modern concept of photon is well known to everyone by the wave model of light. The electric current may cause damage to the hardware of the computer and so the photons are used which will definitely reduce the heat. This pays way to the increasing processor speed which can then to the invention of powerful processing systems. These optical machines mainly use the fiber optic cables to avoid the interference of photons when transmitted through the several dimensions.