Evaluation of Parametric and Hybrid Amplifier Applications in WDM Transmission Systems

Abstract

Over the past two decades, a rapid expansion of the amount of information to be transferred has been observed. This tendency is explained by the rapid increase of Internet and other service users, as well as with the increasing availability of these services. This rapid growth in the amount of globally transmitted data is also associated with the expansion of the range of services offered, including such resource-consuming services as high-resolution video transmission, videoconferencing, and cloud computing, as well as with increasing popularity of such services. To satisfy this constantly increasing demand for higher network capacity, fiber optical transmission systems have been studied and applied with a growing intensity. Currently, optical transmission systems with wavelength-division multiplexing (WDM) have attracted much attention, as this technology allows using the available optical fiber resources more effectively than alternative technologies.

Raman Assisted Fiber Optical Parametric Amplifier for S-Band Multichannel Transmission System

“…In practical implementations, the usable bandwidth for long reach transmission is limited by the gain bandwidth of applied amplification technology. In the case of widely used erbium-doped fiber amplifier (EDFA), the gain bandwidth covers only C (1530-1565 nm) and partly L (1565-1625 nm) bands (5)(6)(7)(8)(9)(10). To overcome this limitation, multiple amplification technologies can be used in parallel to form multiband amplifiers and transmission systems [4][5][6][7][8][9].…”