Demonstration of upstream WDM+FDMA reflective PON and real time implementation on an FPGA platform (original) (raw)
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Journal of Lightwave Technology, 2015
In the framework of the EU-funded research project "FABULOUS" we experimentally demonstrate an innovative FDMA-PON architecture whose upstream transmission is based on a reflective Mach-Zehnder modulator. By a careful optimization of electrical spectrum allocation, semiconductor optical amplifier biasing point and modulation index, we upgrade previous results over similar architectures, significantly increasing the achievable optical distribution network loss. We demonstrate an overall upstream capacity of 32 Gbps per wavelength over 37 km of installed fiber and 31 dB loss.
Upstream transmission in a reflective FDMA-PON: Results from the EU project FABULOUS
2014 European Conference on Networks and Communications (EuCNC), 2014
In this paper, we present a new FDMA-PON (Frequency Division Multiple Access-Passive Optical Network) architecture proposed by the FP7 EU STREP project titled "FABULOUS". The paper is focused on the upstream transmission, based on an innovative reflective optical network unit (R-ONU). A detailed theoretical analysis is first presented and used to optimize the system parameters, then we show the experimental results, demonstrating a 16 Gbps upstream bit rate per wavelength.
OPTOELECTRONICS LETTERS, 2017
We investigate a wavelength-division-multiplexing passive optical network (WDM-PON) with centralized lightwave and direct detection. The system is demonstrated for symmetric 10 Gbit/s differential phase-shift keying (DPSK) downstream signals and on-off keying (OOK) upstream signals, respectively. A wavelength reused scheme is employed to carry the upstream data by using a reflective semiconductor optical amplifier (RSOA) as an intensity modulator at the optical network unit (ONU). The constant-intensity property of the DPSK modulation format can keep high extinction ratio (ER) of downstream signal and reduce the crosstalk to the upstream signal. The bit error rate (BER) performance of our scheme shows that the proposed 10 Gbit/s symmetric WDM-PON can achieve error free transmission over 25-km-long fiber transmission with low power penalty.
Single-Wavelength Downstream FDMA-PON at 32 Gbps and 34 dB ODN Loss
IEEE Photonics Technology Letters, 2015
We propose a PON solution to reach 32 Gbps over a traditional high loss downstream splitter-based optical distribution network (ODN) without using multiple wavelengths at the OLT side nor massive digital signal processing at the ONU side. The achieved 32 Gbps capacity is not too far from the 40 Gbps given by a 4-wavelengths TWDM-PON but completely avoids the handling of multiple wavelengths thanks to a higher electrical spectral efficiency and some system optimization.
Multi-Channel 11.3-Gb/s Integrated Reflective Transmitter for WDM-PON
39th European Conference and Exhibition on Optical Communication (ECOC 2013), 2013
We present a multi-channel transmitter that employs an arrayed reflective electroabsorption modulator-based photonic integrated circuit and low-power driver array. Error-free 11.3-Gb/s per channel performance is achieved over 96 km of SSMF, with negligible crosstalk (<1-dB penalty) in multi-channel operation.
High-speed coherent WDM PON for next-generation access network
2013 15th International Conference on Transparent Optical Networks (ICTON), 2013
The wavelength-division-multiplexed passive optical network (WDM PON) is very attractive for the future broadband access network due to its capability of providing practically unlimited bandwidth to each subscriber. However, for the massive commercial deployment, its competitiveness is yet to be improved. In particular, we need to increase its operating speed and maximum reach, and, at the same time, enhance its costeffectiveness. For these objectives, we have developed the high-speed WDM PON operating at per-wavelength speed of > 10 Gb/s by using reflective semiconductor optical amplifiers (RSOAs) and the digital coherent detection technique. We also evaluated the maximum operable speed of the RSOA-based WDM PON by using the classical Shannon theorem. This paper reviews these progresses achieved at KAIST.