DESIGN OF DISPERSION COMPENSATING FIBERS WITH HIGH NEGATIVE DISPERSION, LOW BENDING AND SPLICE LOSSES: A COMPARATIVE ANALYSIS

Abstract

In optical communication system different types of fibers are laboring for different application. Loss and
dispersion are two essential parameters to be determined as low as possible while designing optical fibers as optical
transmission lines. The dispersion of optical pulses procreation in high speed WDM optical transmission systems is
almost imminent. For acceptable compensation of the dispersion compensating fiber (DCF) is one of the approaches of
attaining a high negative dispersion is to modify the refractive index profile of DCFs. In this paper, by using optifiber
software, the shifting of the zero dispersion wavelength(ZDW) is made by changing the refractive index profiles of a
standard single mode fiber(S-SMF), then the designed profile is promote for low dispersion, bending loss and splice loss.
The attained result show that in designed profile the effective mode field diameter is diminished, which can adequately
reduced the splice loss. In another observation, the parameter of peculiar DCF profiles are optimized to enhance
negative dispersion of about -879 ps/nm. km with splice loss of 9. 9dB/km and bending loss 0. 52 dB/km at bending
radius of 20 mm is obtained.