Fiber-Optic Communication is the most present day and propelled method of data communication which has very recent roots going back to not over 40 years prior. Communication Scientists everywhere throughout the world were in a relentless pursuit of a wideband and low-loss medium of information communication which could be utilized at high data rates with minimal measure of misfortune conceivable. This consistent inquiry, for such a medium, prompted the improvement of optical fiber communication. Initial communications began at lower working frequencies of around 30MHz. The bandwidths at that point required were likewise low. From that point forward the working frequencies have definitely expanded because of substantial necessities in data transfer capacities. A broader view of the idea under discussion can be analysed by looking into electromagnetic spectrum.The medium of transmission that were utilized for working frequencies up to around 1GHz were coaxial cables in which there was an inside channel encompassed by a layer of dielectric material and the dielectric material was encompassed by external metallic layer. The electromagnetic energy went along the lengths of these cables and was limited in the middle of the two metallic layers. These cables had a loss figure of around 20db/km. While working frequencies expanded further the coaxial cables ended up being insufficient and lossy, in this way offering ascend to the requirement for another medium called waveguides. These are fundamentally empty structures which guide the electromagnetic energy starting with one point then onto the next through them. In any case, as the working frequency additionally expanded to couple of many gigahertz these waveguides too turned out to be in any way lacking as there was no supporting electronic hardware accessible that could work at such high frequencies. The explanation for this was at such high frequencies, even the size of the electronic component began to demonstrate a few variations in the circuit conduct and the electronic components could never again be dealt with as lumped elements. Subsequently, this prompted a solid need of a look for different choices in light of the fact that however there appeared to have showed up an end in the accessible innovation, yet there did not seem any stop in the ever expanding interest for bandwidth.