Performance optimization of optical communications system for a 240 Gb/s hybrid TDM-OCDMA-PON using optical polarization multiplexing

Abstract This study introduces a high capacity addition to the previous 10 Gb/s per-user FTTH architecture. With time division multiplexing and two-dimensional single weight zero cross-correlation (2D-SWZCC) optical code division multiple access and polarization division multiplexing, we realize an increment in aggregate capacity by 50 percent to a total of 240 Gb/s among 16 users. This architectural change involves a radical change in TDM demultiplexing to the electrical domain which essentially decreases the hardware load and cost at the Optical Network Unit. In simulations of 50 km single-mode with Erbium-Doped Amplifier compensation, the optimum Q-factor of 17.9249 and lowest bit error rate of 2.275 × 10 −72 show that this system can be used in the next generation long-reach optical access.