WDM-PON has become a promising solution to the next-generation access networks, owing to its broad bandwidth and upgradable flexibility. We experimentally demonstrated several WDM-PON architectures with broadcast capability and colorless optical networks units (ONU).
Fibre channel has been applied comprehensively to the new generation of avionics system. This paper presents the design and implementation of a high flexibility, XML-based configuration system of fibre channel avionics system, namely FC-X.
This paper proposes a virtual hierarchical mesh network and efficient subnet agent selection method to reduce the routing table size of servers in server-only data center networks for better scalability of the network.
The influence of large signal modulation on photonic UWB generation based on a phase modulator is investigated. The scheme for monocycle generation has better tolerance to modulation distortion than that of doublet generation.
A frequency-doubling optoelectronic oscillator based on a polarization modulator without the use of an extra laser diode is introduced. The application of the OEO in microwave up-conversion is experimentally verified.
We proposed a method to realize 50Gbps Direct-Detection Optical Orthogonal Frequency Division Multiplexing (DDO-OFDM) after 80km SSMF transmission without dispersion compensating fiber based on selective subcarrier-filling, using a cost-effective electro-absorption Modulator.
We proposed and demonstrated the propagation of slow/fast light in erbium-doped fiber through gain cross modulation. We observed the ultraslow light with a group velocity of 6.1×10−3 c and the superluminal propagation with a negative group velocity of −5.1×10−4 c.
We propose and demonstrate a polarization independent Raman-assisted fiber optical parametric amplifier using depolarized Raman and parametric pumps. The polarization dependent gain fluctuation has been reduced from >10 dB to less than 1 dB.
A technique to generate chirp-free UWB signal in the optical domain with extremely high tolerance to fiber dispersion based on a polarization modulator followed by an FBG notch filter is proposed and demonstrated.
Optical chaos tailoring by a fiber Bragg grating that introduces dispersive optical feedback into a semiconductor laser is demonstrated numerically. The results have potentials in improving chaotic communication and chaotic ranging.
We investigate a novel WDM-PON system by using self-seeded Reflective Semiconductor Optical Amplifier (RSOA) both in downstream and upstream. The transmission performance is evaluated and reported for the first time and meets carrier level requirements.
In this paper, we extend the DSP-based optical channel estimation to measure their transfer functions of passive optical compnents. In experiment, we demonstrate sub-MHz resolution with a measurement speed bounded by the theoretical limit.
We discuss network design algorithms to minimize the power consumption of an optical transport network with joined optimization of mixed regenerator placement and routing and wavelength assignment. The performance of the algorithms is investigated with simulations in various network topologies. Simulation results indicate that the algorithms can effectively reduce the number of O/E/O 3R regenerators,...
This paper reviews several photonic techniques for instantaneous microwave frequency measurement recently proposed by us. Photonic measurement of frequency with improved preformance and reduced complexity and cost is demonstrated.
Wavelength-agile hybrid WDM-TDM passive optical networks (PON) architecture, dual-mode ONT which enables user roaming between EPON and GPON, integration of PON, PON health monitoring (PHM) and home health monitoring (HHM), all these issues relate to design and applications of next generation PON are discussed.
A centrally-controlled self-protected WDM-PON is proposed. It provides downstream 1∶1 and upstream 1+1 protection, respectively. 2.5Gbps bidirectional transmissions under both working and protection modes are demonstrated. The protection switching time is about 2ms.
The EPON_EOC network which is designed for Triple-play in China's broadcasting industry is analyzed. Besides, technical advantages of next generation billing system are indicated. Then, a performance optimization solution of this system is proposed, which is demonstrated to be feasible and effective in test results.
Recent developments in microwave photonic signal processing featuring tunability and reconfigurablity are presented in the paper, with emphasis on the realisation of multi-tap microwave photonic filters, and programmable signal processing functions based on photonic approaches.
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