Abstract
We experimentally demonstrate the performance of a 10 Gb/s subcarrier multiplexed (SCM) wavelength-division multiplexed (WDM) passive optical network (PON) using 2.5 Gbaud 16-QAM transmission signals. Digital signal processing (DSP) and square-root raised cosine (SRRC) pulse shaping enable both the uplink and downlink channels to achieve net spectral efficiencies up to 2.8 bit/s/Hz per channel using reflective semiconductor optical amplifier (RSOA)-based optical network units (ONUs) and economical 10 GHz intensity modulation and direct detection transceivers. We characterize the system's bit error rate (BER) performance over a 20 km single feeder PON with both remote continuous-wave (CW) seeding and full-duplex transmission scenarios, assuming standard forward error correction (FEC) codes.
Highlights
The data capacity of access networks must continue to evolve to meet consumer appetites for high bandwidth services such as streaming Internet video, video-on-demand and cloud-based storage [1]
We experimentally demonstrate the performance of a 10 Gb/s subcarrier multiplexed (SCM) wavelength-division multiplexed (WDM) passive optical network (PON) using 2.5 Gbaud 16-QAM transmission signals
To the best of our knowledge this is the highest reported spectral efficiency for a 10 Gb/s subcarrier multiplexed (SCM) wavelength-division multiplexed (WDM) passive optical network (PON)
Summary
The data capacity of access networks must continue to evolve to meet consumer appetites for high bandwidth services such as streaming Internet video, video-on-demand and cloud-based storage [1]. These popular, data intensive services will drive the adoption of fiber-to-the-home by network providers to meet the need for greater capacity on access networks. Future passive optical networks (PONs) using time-division multiplexing (TDM) will provide a short term upgrade pathway for operators to increase the total shared bandwidth available to users, but scaling TDM-based networks beyond 10 Gb/s is expected to be technically challenging [2]. The reflective semiconductor optical amplifier (RSOA) is a well studied candidate for colourless ONU transmitters and their modulation bandwidth is fundamentally limited to less than 3 GHz, RSOAs can be operated at 10 Gb/s or greater data rates using a variety of electrical [3, 4] and optical [5,6,7] equalization techniques
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