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We experimentally demonstrate a vector-mode-division-multiplexing (VMDM) system based on opticalfrequency comb (OFC) over 80cm free space optical (FSO) link. The 228 Gbit/s data transmission has been achieved by using two basic vector modes over 20 wavelengths with direct detection orthogonal frequency division multiplexing (DD-OFDM) signal. The result shows that this VMDM system should be a good...
We have successfully demonstrated generation of 120-GBaud ETDM PDM-16QAM signals and transmission of twelve WDM channels, each with 960 Gb/s signals (800 Gb/s net data rate), over 1200-km link based on 100-km TeraWave™ fiber spans.
We demonstrated 4-channel high level QAM-DMT transmission over 20-km SMF-28 with real-time reception. 58.72-Gb/s 256QAM-DMT and 56.4-Gb/s 128QAM-DMT signal transmission within 25-GHz grid is achieved with the BER under 2.4×10−2 and real-time reception.
We demonstrated four-channel WDM 256.51Gb/s 16QAM-DMT short-reach optical-amplifier-free inter-connection with real-time reception. We achieved highest capacity DMT signal transmission over 2.4-km SMF with the BER under SD-FEC limitation of 2.4×1 0−2.
Computer aided diagnosis plays an important role in automatic detection of abnormal shadow area on CT images. The method of an automatic detection of lung nodules regions of interest (ROI) is presented in this paper. Firstly, the lung areas are segmented from CT images. Then, the initial ROI including nodules and blood vessels in lung areas are extracted by Top-hat filter. Thirdly, the second ROI...
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