碩士 / 國立臺北科技大學 / 光電工程系 / 107 / Underwater Wireless Optical Communication (UWOC) has always been the most important key technology for human beings to study the ocean, including monitoring marine water pollution, exploration of the seabed, and viewing abnormal volcanic activity on the seabed. With the rapid development of UWOC, now for high-speed, long-distance for underwater links has also increased.
In this paper, A two-channel Space-Division-Multiplexing(SDM) - based Four-Level Pulse Amplitude Modulation (PAM4) Free-Space Optical (FSO) - Underwater Wireless Optical Communication (UWOC) integrated system is proposed. The 50-Gbps PAM4 are respectively carried at 405-nm and 450-nm. On the blue laser, two-stage light injection, optoelectronic feedback, and laser beam reduction techniques are used to improve the system transmission performance. Two-stage light injection and optoelectronic feedback techniques enable the laser to enhance its frequency response. The laser beam reduction techniques is effective to improve the transmission performance of the UWOC system. Therefore, we successfully demonstrated the total transmmission capacity of 100-Gbps (50-Gbps/channel x 2 channels) in the total transmission distance of 205 meters. Good bit error rate (BER) performance is achieved in the system, of which 200 meters is FSO and 5 meters is UWOC.
| Identifer | oai:union.ndltd.org:TW/107TIT00124015 |
| Date | January 2019 |
| Creators | SU,CHUNG-WEI, 蘇崇瑋 |
| Contributors | LU, HAI-HAN, 呂海涵 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 78 |
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