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We proposed and demonstrated a cost-effective in-band optical signal to noise ratio (OSNR) monitoring technique based on coherent hybrid in 20Gb/s CO-OFDM system. Less than 0.5dB monitoring error is achieved with 400MHz balanced photodetector (PD).
We proposed and experimentally demonstrated a programmable optical signal-to-noise ratio (OSNR) monitoring scheme by using linearly chirped fiber Bragg grating (LCFBG) and a commercial thermal printer head. For the coherent optical orthogonal frequency-division multiplexing (CO-OFDM) transmission system, the monitor's working wavelength can be flexibly software-controlled from 1530 to 1538 nm to support...
In this paper, through the monitoring case on the mechanical characteristics of the circuit breaker in service operation, analyzed the problems such as when the circuit breaker is in the running process whether is abnormal, potential faults or defect types, the potential fault parts, etc, and had a maintenance to the products with potential failures that may endanger the operation, and verified the...
Electric vehicles play an important role in the energy saving and emission reduction program. However, the influence on the power quality of distribution network caused by the electric vehicles becomes more and more serious, including the voltage drop and other aspects. Therefore in the paper, a flexible and ordered charging control system for the electric vehicles is developed. Firstly the electricity...
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