Realization of dense bidirectional spectrum sliced WDM-PON access system

Abstract

The present paper proposes high speed dense 8-channel bidirectional WDM-PON access system where spectrally-uniform ASE source is shared among multiple users for realization of downstream transmission. Upstream transmission is realized by using conventional laser based solution. Proposed system is based on ITU-T DWDM grid and operating at 10 Gbit/s per channel symmetrically on both directions. It is demonstrated that implemented spectrum slicing technology is capable to provide downstream data transmission over 20 km SMF fiber span with BER<10 -12 by using additional fiber Bragg grating chromatic dispersion compensation module and excess intensity noise reduction by additional semiconductor optical amplifier.

Evaluation of Parametric and Hybrid Amplifier Applications in WDM Transmission Systems

“…It is not the most cost-effective solution, as, by increasing the number of transmission channels, the number of required light sources increases accordingly. Due to this reason, an increasing number of studies are conducted to find such transmission system architecture, which would be able to ensure a higher number of signal carriers using fewer optical sources [32][33][34]. FOPAs during the process of parametric amplification generate idler spectral components, which, in essence, are phase-conjugated copies of the amplified signal.…”

“…There are at least two alternatives to the proposed system architecture, which can produce more than one carrier per optical source: spectrum-sliced systems [33,35] and systems, which are based on FWM use for producing third-order spectral components (without the initial carriers) [34,36]. Nevertheless, the use of idlers ω 4 produced by FOPA for doubling the number of carriers in WDM systems ensures the best carrier signal stability and, therefore, the highest quality of the transmittable signal.…”

Design and Performance Analysis of DWDM-PON

“…These factors can be controlled by using optical amplifier such as Erbium-Doped Fiber Amplifier (EDFA) and semiconductor optical amplifier (SOA). With EDFA technology, a low noise can be achieved when the signals are amplified [6], [7], [8], [9]. Since these noises or dispersion are consistent and cannot be negates easily, the signalto-noise ratio functioned is to determine the amount threshold of amplifiers that can be placed.…”