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In this paper, we experimentally demonstrate 22.4-Gb/s optical OFDM transmission over 1000 km SSMF with polarization multiplexing (POLMUX) and direct detection. To the best of our knowledge, this is the longest reach directly-detected POLMUX-OFDM experiment reported.
We demonstrate a novel optical OFDMA ring network with an adaptive sub-carrier allocation algorithm, which utilizes queuing length and traffic characteristics to effectively support multicasting and real-time traffic flows.
Dual-polarization operation of all-optical IFFT/FFT elements is demonstrated for the first time employing coupler interferometry. All-optical OFDM transmission at 100-Gb/s for two QPSK-PDM sub-carriers was experimentally performed using two matched 25 G DMZIs and coherent detection.
This paper designs multiple channel scheduling algorithms for WDM PONs and OFDMA PONs to allocate upstream bandwidth resource to competing users. Simulation results demonstrate that the proposed algorithms obtain higher channel utilization.
We propose and experimentally demonstrate the first 40-Gb/s MIMO-OFDM-PON. Superior performance over 20 km SSMF plus 15 dB attenuation is reported using polarization multiplexing and direct photo-detection, thereby significantly reducing implementation complexity and cost.
The first single-lambda 108-Gb/s 16QAM-OFDMA-PON is demonstrated using polarization-multiplexed optical OFDM and direct-detection. This is the highest single-lambda downstream rate in PON reported to date, achieved over 20 km SSMF and a 1:32 split.
We have studied the 10.8-Gb/s (10-Gb/s after coding) OFDMA-PON downstream and upstream transmission performance with 8 OUN-s over 20 km SSMF. The maximum path loss was achieved at 25.5 dB using IM and APD without optical amplifier.
We survey the state-of-the-art in optical orthogonal frequency division multiplexed (OFDM) transmission with direct detection (DD), highlighting cost-effective solutions for OFDM/DD metro/long-haul systems and OFDM-based multiple access passive optical networks (OFDMA PON).
We report a novel design for high-speed all-optical OFDM employing coupler interferometry for IFFT/FFT. 160-Gb/s DQPSK transmission using eight sub-carriers was simulated, while 25-Gb/s DPSK experiment using two sub-carriers was performed using matched delay interferometers.
Orthogonal frequency division multiplexing (OFDM) is a technique that provides high data rate communications, but it is sensitive to the carrier frequency offset (CFO) caused by the misalignment in carrier frequencies between transmitter and receiver, which results in Inter-Carrier Interference (ICI) among the sub-carriers and degrades the Carrier-to-Interference Ratio (CIR). In this paper, we propose...
A broadband access system with a record bandwidth of 16 Gbit/s radio OFDM signals transmission over 50 m GIPOF at 1310 nm has been designed and experimentally demonstrated for the first time.
We show 11.5-Gb/s optical OFDM transmission over 640 km SSMF with directly modulated laser (DML) and direct-detection without dispersion compensation. DML can reduce the system complexity and cost.
We propose a PON architecture based on orthogonal frequency division multiple access (OFDMA) technologies. The system produces transparent pipes for transmission of heterogeneous services. A virtual PON scheme based on OFDMA is further introduced.
We present a PMD compensation scheme suitable for use in multilevel coded-modulation schemes, with PMD compensation efficiency comparable to that of OFDM, but with lower complexity of both transmitter and receiver. It is based on Alamouti-type polarization-time coding, with LDPC codes as channel codes.
We have designed and experimentally demonstrated a super broadband radio-over-fiber system with a record bandwidth of 16 Gbit/s OFDM signals transmitting over both 20 km SMF-28 and wireless air distance of over 6m.
We report the first experimental demonstration of 10 Gb/s free-space optical transmission using orthogonal frequency division multiplexing (OFDM). The OFDM system provides superior performance, with a 3 dB improvement in receiver sensitivity over NRZ OOK.
We show 8 times 11.5-Gb/s (10-Gb/s after coding) optical OFDM transmission over 1000 km SSMF with conventional DFB lasers and direct-detection. Compared with the coherent-detection using ECL lasers, DFB lasers and direct-detection can significantly reduce the system complexity and cost.
We propose a new coherent optical OFDM system architecture using self optical carrier extraction. It requires simplified DSP at the coherent receiver. The system shows good tolerance to phase noise, laser linewidth, and fiber nonlinearity.
A novel passive optical network (PON) architecture based on optical orthogonal frequency division multiple access (OFDMA) technologies is presented. Two potential medium access control (MAC) methods namely dynamic circuit transmission and fixed burst transmission are investigated.
A novel unidirectional path switched ring (UPSR) based on optical orthogonal frequency division multiple access (OFDMA) technologies is introduced. Two types of reservation-based and token-based multiple access control (MAC) protocols are proposed and compared.
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