2019-03-182024-05-13https://scholars.lib.ntu.edu.tw/handle/123456789/651057摘要：因應未來自由空間可見光、微波/毫米波無線、光纖有線三網融合殷切需求，以高頻譜利用率格式訊號直調高頻寬藍/紫光雷射二極體(FPLD)、共振腔與微腔發光二極體(RCLED & uC-LED)經螢光色轉換為白光，作為室內/水下/無人載具間照明通訊光源的LD/LED可見光通訊(VLC或稱LiFi)技術已成新近研究熱點，而LD LiFi以高同調性與低強度雜訊更具高潛力取代LED LiFi成為次世代行動裝置間(P2P)或載具(V2V)間可見光通訊主軸。本三&#63886;特約研究將探討高功率藍/紫光FPLD/RCLED/uCLED搭配半導體量子點或高分子螢光色轉換，或以三色LD混黃光LED轉換白光，與瓦級高功率擴束藍/紫光FPLD建構陸上與水下點對點多樣格式信號通訊。第一&#63886;研究將建立探針工作站分析高功率藍/紫光FPLD/RCLED/uC-LED裸晶片極致直調頻響，並開發具備波形前置重整與頻譜失真預補償之OOK/PAM-4/QAM-OFDM格式訊號產生/調 變/解碼程式，藉提高弛豫震盪頻率響應和抑制相對強度雜訊與波形修正以利阻抗匹配電路與封裝優化。第二&#63886;研究將自製皮秒時析螢光光譜儀探討CdSe量子點摻雜PVA與BEHP-PPV/MEH-PPV混成高分子黃光螢光色轉換薄膜的激態載子活期搭配藍/紫光FPLD混光，另也採用高功率黃光LED加入高功率紫藍/綠/紅光FPLD四色混光，搭配產生可調色溫與演色性優化與低人眼危害之照明白光，分析其搭載OOK/PAM-4/QAM-OFDM最大通訊位元率與傳輸距離。第三&#63886;研究將以瓦級高功率藍/紫光FPLD建構寬擴散角之陸上與水下點對點可見光通訊網路，以軟體演算法優化OOK/PAM-4波形預補償與QAM-OFDM頻譜(FBMC/UFMC)濾波。並建構400/420/440/460-nm波長藍光雷射載波粗分波多工(CWDM)，及二維陣列藍/紫光FPLD/RCLED/uC-LED多&#36755;入多&#36755;出(MIMO)可見光通訊系統。<br> Abstract: The LD/LED based visible light communication (VLC) or light fidelity (LiFi) is a research spotlight for indoor/underwater/unmanned-vehicle lighting communications recently, which triggers the urgent need on developing high-speed blue/violet FPLD, resonant-cavity LED (RCLED) and micro-cavity LED (uC-LED) devices, not only for the color-converted white-light generation but also for fusing the VLC with the wireless and fiber networks toward high-bandwidth and huge-data transmission in the future. Particularly, the highly coherent blue/violet LD LiFi with low relative intensity noise and wide modulation bandwidth exhibits high potential to take over the LED LiFi as the key role of the mobile phoneto-phone (P2P) and the unmanned vehicle-to-vehicle (V2V) network in the near future. To accelerate the technical import of the high-speed LD/LED LiFi, this project proposes the use of novel high-speed FPLD/RCLED/uCLED for color-converted white-light generation with either CdSe quantumdot (QD) or BEHP-PPV/MEH-PPV polymer phosphors. Alternatively, by mixing the tri-color RGB LDs with yellow LED to present the LD white-lighting source with high color-rendering index (CRI), and by simply using the divergent beam of the watt-class high-power blue/violet FPLD, the proposed indoor/underwater/P2P/V2V LiFi is constructed to analyze the allowable point-to-point transmission capacity of versatile data-formats under both free-space and underwater VLC environments. The first-year research focuses on equipping the microwave probe station for differential P-I-V analyses of the high-power blue/violet FPLD/RCLED/uC-LED chips, and the optimization of the impedance matching circuit toward the highest modulation bandwidth of the high-power blue/violet FPLD/RCLED/uC-LED under the TO-can package is also studied to upshift the relaxation oscillation frequency and suppress the relative intensity noise. In addition, the optimized off-line data generation/modulation/decoding program with the pre-distortion or preemphasized OOK/PAM-4/QAM-OFDM formats will be developed by using the MATLAB software. The data transmission performances with and without pre-distortion/pre-emphasis or universal/band-pass filtering technology are compared to optimize the directly modulated high-power blue/violet FPLD/RCLED/uC-LED after compensating the impedance mismatched package response. The second-year research emphasizes on establishing the picosecond time-resolved photo-luminescence spectrometer to analyze the carrier lifetime of the size-tunable CdSe QD doped PVA film and the BEHP-PPV/MEH-PPV hybrid polymer based ultrafast fluorescent color converters, these fluorescent color-conversion plates will encapsulate the high-power blue/violet FPLD/RCLED/uC-LED for white-light illumination at different color temperatures with improving CRI, which will perform the maximal transmission bit rate under versatile OOK/PAM-4/QAM-OFDM data formats. Moreover, the high-power yellow LED is considerably added to mix with the red/green/blue tri-color LD beam to approach the low eye-hazard white-lighting with adjustable color temperature and improved transmission data rate based on the off-line pre-emphasized OOK/PAM-4/QAM-OFDM formats. The third-year research will build up the free-space and underwater point-to-point LiFi network with large-divergent-angle high-power blue/violet FPLD. By using the directly modulated OOK/PAM-4 waveform with pre-emphasis and the QAM-OFDM stream with the FBMC/UFMC processing, the free-space and underwater point-to-point blue/violet LD LiFi link will be constructed for long-distant transmission. In addition, the 400/420/440/460-nm multi-channel LDs based coarse wavelength-division-multiplexing (CWDM) and the high-power blue/violet FPLD/RCLED/uC-LED based 2-D multi-input-multi-output (MIMO) LiFi will be demonstrated.藍/紫藍光雷射二極體紅/綠/藍(紫)雷射混光半導體量子點螢光體高分子螢光體四色混光色轉換雷射可見光通訊雷射白光照明通訊自由空間與海水下點對點雷射通訊粗分波多工自由空間雷射可見光通訊Blue/Violet laser diodeRed/Green/Blue (Violet) laser mixingSemiconductor quantum dot phosphorPolymer phosphorFour-color mixingColor conversionVisible light communication (VLC)White-light illumination and communication