Title: Role of Photonic Crystal Fibers in fiber industry Abstract: Since the breakthrough of fiber industry after invention of photonic crystal fibers (PCFs) in 1996, research on PCFs is ongoing with full speed as PCFs contain wavelength-scale morphological microstructure running down their lengths, which provide PCFs tunable optical properties as per design requirements. These properties of PCFs have attracted researchers to think unimaginable thinking, which was quite impossible using conventional optical fibers before this new