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10 Gbps DPSK electronic pre-equalization transmission was demonstrated over 500 km of 8,170 ps/nm SMF in the laboratory and over 360 km of field-installed SMF without any optical dispersion compensation.
His paper proposes a new diagnosis method for aging degradation of insulating paper in power transformer. We took note of cellulose fibers that are suspended in insulating oil in transformers as samples that could be useful for assessing the aging degradation of insulating paper in transformers. We would like to note that the thermal degradation of insulating paper accompanies the crystallization...
In this paper, we propose a polar coordinate transformation in real time using the COordinate Rotation DIgital Computer (CORDIC) algorithm in order to realize an electronic predistorting transmitter with a practical circuit implementation. The proposal enables a dual-drive Mach-Zehnder modulator (DDMZM) to use vector in-phase/quadrature-phase (I/Q) modulation to generate predistorted complex electronic...
This paper proposes a new diagnosis method for aging deterioration of insulating paper. We would like to note that the thermal deterioration of insulating paper accompanies crystallization of cellulose fibers. In this paper, we investigated the relationship between deterioration and crystallization of cellulose fiber by using the dispersion staining method.
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