Self-phase modulation and inter-polarization cross-phase modulation mitigation in single-channel DP-16QAM coherent PON employing 4D clustering

Impairment mitigation in dual-polarization single-span optical digital coherent systems using support vector classifiers

“…SIMULATION SETUP Simulations are carried out in VPI Transmission Maker and Python using the simulation setup shown in Fig. 2 and described in [11]. At the transmitter side, a pseudo-random bit sequence with a raw bit rate of 112 Gbps is divided into two subsequences that are mapped into 16-QAM constellations.…”

“…Various authors demonstrated the capacity to compensate for the nonlinear distortion of these methods, but their high computational complexity prevented them from being adopted in real-time applications. In order to find a trade-off between performance and computational complexity, different machine learning methods have been proposed, including clustering [11], [12], [13], [14], supervised regression [15], [16], [17], [18], and supervised classification [19], [20]. Supervised classification is particularly interesting because, on the one hand, it typically leads to better performance than clustering.…”

Optimization of the coupling efficiency under self-injection locking in a narrow linewidth hybrid wavelength tunable laser diode

“…Fields such as digital coherent optical communication [1][2][3][4][5] and light detection and ranging (LiDAR) [6][7][8][9][10][11] have recently developed owing to an increase in the amount of information and the trend toward the automated driving of automobiles. These fields have increased the demand for semiconductor lasers that are characterized by low power consumption, low cost, and small size.…”

Wavelength complement coding based a smooth hybrid MDM/C-NGPON evolution employing PS-512QAM modulation

“…Recently, various C-PON systems have attracted keen interest as it carries the benefits of flexibility, high capacity, and cost-effectiveness. Costa C et al proposed a dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM) C-PON using 4D clustering over a 151.6km transmission distance at 100Gbps data rate (Costa et al 2023). Jung SM et al demonstrated wavelength-reused full-duplex reflective C-PON over a 73km distance at a 12Gbps transmission rate (Jung et al 2018).…”