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We propose a novel scheme using a microring resonator (MRR) structure in silicon photonics (SiP) for the elimination of signal-to-signal beat interference (SSBI) in a direct detection, optical orthogonal frequency division multiplexing (DDO-OFDM) system. Unlike other SSBI cancellation techniques, SiP-based MRR shows unique advantages such as compactness and low cost. We examine performance as a function...
In order to improve the utilization of renewable energy in power system, it is needed to address the power fluctuation problem caused by grid interconnection of renewable energy power generation. A real-time dispatch method of energy storage station to smooth active power fluctuation is proposed in this paper. The real-time dispatch strategy is designed to smooth active power difference fluctuation...
We experimentally demonstrated the transparent convergence of distributed antenna system in a digital wavelength division multiplexed passive optical network system employing reflective semiconductor optical amplifier (RSOA) at the remote antenna unit (RAU). The spurious free dynamic range and frequency response of the RSOA is measured to meet WiFi's requirements. RSOA's electrical-to-optical conversion...
We experimentally demonstrate, for the first time, bidirectional analog WiFi signal transmission in a digital wavelength division multiplexed passive optical network (WDM-PON) system. Our solution is compatible with a single optical feeder fiber and customer premises units employing reflective semiconductor optical amplifiers (RSOAs). The downlink optical carrier is modulated which both baseband 1...
We experimentally demonstrate the transmission of full-duplex analog WiFi uplink and downlink at 10 MHz IF and 2.4 GHz RF, respectively. The BER is below FEC-threshold for 64QAM for transmissions of up to 20 km single mode fiber.
The finite gain recovery time of the reflective semiconductor optical amplifier (RSOA) causes distortion and pattern dependence at high bit rates in colorless optical network units (ONUs) of WDM passive optical network (WDN-PON). We propose and demonstrate a scheme of upstream transmission of 10Gbps NRZ signals directly modulated via a RSOA in a 25km single fiber, where we use a fiber Bragg grating...
In this letter, a low cost FBG equalizer is proposed to compensate the bandwidth limitation of RSOA. 10 Gb/s upstream OOK signal over 24.4 km SSMF fiber in loopback structured WDM PON system has been demonstrated. An offset FBG filter is placed before the PIN to compensate the modulation bandwidth of 1.2 GHz RSOA operating in 10 Gb/s. The experiment results show that the offset FBG filter could dramatically...
A protection scheme for hybrid WDM/TDM PON migrated from sparsely distributed TDM PON is proposed and evaluated. Simulation and performance analysis show a characteristics of high reliability and low bandwidth cost of the scheme.
In order to improve traditional safety distance models based on braking process of the leading vehicle, a new safety distance model of one-lane following condition is established based on traditional safety distance models. The new model considers the relative speed between vehicles and the change process of deceleration value. A simulation using Matlab software verifies that the new model overcomes...
This paper presents the phenomenon of delayed voltage recovery in power system of Saudi Electricity Company Western Region (SEC-WR), resulting from motor stalling of large air-conditioner (A/C) loads after faults. Parameters of the air-conditioning model are tuned successfully and reasonably by comparing simulation results with the dynamic system monitor (DSM) recorded disturbances. To solve this...
With the rapid development of electric railway, the negative current injected to the power system increases obviously, and effects increasingly on the power system. Based on the regional power supply network of railway loading, the simulation model is conducted using PSCAD/EMTDC. The paper analyzes the negative current that occurs in the generator stator by simulating the model, and studies further...
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