Abstract
The explosive growth in the need of massive information rates and number of service users has lead to increased attention towards novel point-to-multipoint transmission links capable of meeting the requirements of next generation-passive optical networks (NG-PON). This work proposes an ultra-high information capacity NG-PON downstream transmission architecture incorporating hybrid wavelength-division multiplexed (WDM) and polarization-division multiplexed (PDM) signals. 4-independent WDM channels with 100 GHz spacing, each transmitting 112 Gbps PDM beam using 16-quadrature amplitude modulated (QAM) signals are realized. The analytical investigation of the proposed hybrid W-PDM-based NG-PON scheme is realized for varying number of optical network units (ONUs) i.e. 64, 128 and 256 under the effect of non-linearities, fiber attenuation and dispersion. The performance is evaluated using bit-error rate, error vector magnitude, received optical power, and constellation plots of the signals at the ONUs as the metrics for performance. Results report a reliable transmission of 4
λ
×
112 Gbps information along 90, 75 and 62 km for 64, 128 and 256 ONUs respectively. The proposed work provides an analytical understanding of high-capacity NG-PON system employing hybrid W-PDM techniques for varying number of end users.