2018/10/01 by Akinwumi A. Amusan, Amusan, Akinwumi, Elizabeth A. Amusan +1
Engineering · #Optical Network Technologies #Advanced Photonic Communication Systems #Semiconductor Lasers and Optical Devices
paper · pdf · doi:10.48550/arxiv.1810.00618
Wavelength division multiplex (WDM) system with on / off keying (OOK)\nmodulation and direct detection (DD) is generally simple to implement, less\nexpensive and energy efficient. The determination of the possible design\ncapacity limit, in terms of the bit rate-distance product in WDM-OOK-DD systems\nis therefore crucial, considering transmitter / receiver simplicity, as well as\nenergy and cost efficiency. A 32-channel wavelength division multiplex system\nis designed and simulated over 1000 km fiber length using Optsim commercial\nsimulation software. The standard channel spacing of 0.4 nm was used in the\nC-band range from 1.5436-1.556 nm. Each channel used the simple non return to\nzero - on / off keying (NRZ-OOK) modulation format to modulate a continuous\nwave (CW) laser source at 40 Gbps using an external modulator, while the\nreceiver uses a DD scheme. It is proposed that the design will be suitable for\nlong haul mobile backbone in a national network, since up to 1.28 Tbps data\nrates can be transmitted over 1000 km. A bit rate-length product of 1.28\nPbps.km was obtained as the optimum capacity limit in 32 channel dispersion\nmanaged WDM-OOK-DD system.\n