Performance investigations of WDM radio over Fiber technology for long-haul Optical link
Author(s):
Saurabh Singh, Deepak Kumar Singh, B B Tiwari
Keywords:
Coherent optical fibre networks, PM-QPSK, Erbium-doped fiber amplifier, Wavelength division multiplexing, Long-haul optical network.
Abstract
The study of the coherent optical fibre transmission network for next generation optical networks is presented using a C-band spectral analysis to determine the power of the adjacent channels. Using the intra-link optical network, the scheme of polarisation multiplexed-quadrature phase shift keying (PM-QPSK) is employed to compare probabilistic and conventional deterministic systems. The proposed design is validated using wavelength division multiplexing (WDM) radio over fibre (RoF) system. Further, to obtain more insight about the system characteristic, PM-16QAM (Polarisation multiplexed-quadrature amplitude modulation) and PM-QPSK system margins are analysed. It is observed that the optical launch power range of 4 dB has a maximum inaccuracy of 0.4 decibels. In addition, the coherent WDM optical system up to 6 dB dispersed link are analysed across 1000 discrete instantiations of PM-QPSK and PM-16QAM schemes using polarisation dependent loss (PDL) measurement. Over a 6 dB range of launch optical powers, the system gives less than 1 dB of signal-to-noise ratio (SNR) loss.
Article Details
Unique Paper ID: 157365

Publication Volume & Issue: Volume 9, Issue 6

Page(s): 694 - 702
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