DSP-free single-wavelength 100 Gbps SDM-PON with increased splitting ratio using 10G-class DML

• Published in: Optics Express
• Main Authors: Bao, Fangdi, Ding, Yunhong, Nooruzzaman, Md, Amma, Yoshimichi, Sasaki, Yusuke, Oxenløwe, Leif K., Hu, Hao, Morioka, Toshio
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2019
• Subjects: DML
• Online Access: https://orbit.dtu.dk/en/publications/043c0f89-c5b1-43ca-a686-c7dfe26222ae; https://doi.org/10.1364/OE.27.033915; https://backend.orbit.dtu.dk/ws/files/201247207/oe_27_23_33915.pdf

We present beyond 100 Gbps space-division multiplexing passive optical network (SDM-PON) systems using commercial 10G-class directly modulated laser (DML) modulated with 25/28 Gbps data signals, with polarization-diversity micro-ring resonator (PD-MRR) to improve the extinction ratio (ER). A high-count multi-core fiber (HC-MCF) with low-crosstalk (XT) is used in the system, simultaneously increasing the transmission capacity and splitting ratio. Different cores of the HC-MCF are used for upstream (US) and downstream (DS) transmission, avoiding the Rayleigh backscattering noise. Thanks to compatibility with time-division multiplexing (TDM), the splitting ratio could be further increased. In addition, both symmetric and asymmetric SDM-PON architectures are proposed to meet different requirements of users. In the SDM-PON systems, a simple intensity modulation/ directly detection (IM/DD) is applied without digital signal processing (DSP), which may be a promising candidate for future large-capacity and high splitting ratio access networks.