Dispersion characterization of photon crystal fiber using fully-vectorial effective index method

Abstract

In this paper, the effect of variations in the cladding of photonic crystal fibers (PCF) using fully-vectorial effective index method has analytically been considered. There are two important parameters in calculating effective index, that are air-hole diameter ( ) d and airhole spacing ( ).Λ The difference of effective index and cladding index has been shown in terms of wavelengths for different values of d and .Λ Another effective factor of PCF is its single-modedness, which is investigated for different design conditions in this analysis. As it is well known that the PCF can develop high negative dispersion. Therefore, It has been shown that dispersion of the PCF can be more negative/positive by changing its characteristic parameters. Also, it is shown that slope of dispersion curve changes with PCF parameters.

Review on Photonic crystal fiber as dispersion compensating fiber

“…Optical fibers offer benefits over electric connections, including minimal loss, a wide bandwidth, and an incredibly little chance of unwanted occurrences. Chromatic dispersion among optical fiber is one of those most important factors for optical fiber telecommunications [1]. Optical messages spread as they travel throughout an optical fiber due to dispersion.…”

“…As fiber chromatic dispersion makes it difficult to deliver data during high bit rates over long distances. The degradation of optical information at the point of receiver prior to the final identification is avoided by using optical fiber having negative dispersion to serve as compensator within certain areas of optical system [1] Dispersion requires to be adjusted for long-haul optical transmission networks to reduce the spreading of light pulses. [9].…”