臺灣博碩士論文加值系統

基於VCSEL二階注入鎖模機制建構56 Gb/s PAM4可見光傳輸系統，經實驗結果證明，系統所採用5.4 GHz頻寬VCSEL經本論文所提出之二階注入鎖模，能夠成功傳送56 Gb/s PAM4訊號，同時應用於可見光傳輸。
根據了解，本論文是第一個將二階注入鎖模與PAM4技術應用於680 nm VCSEL可見光傳輸系統中。提出基於VCSEL二階注入鎖模機制建構56 Gb/s PAM4可見光傳輸系統。
所提出的基於VCSEL二階注入鎖模機制建構56 Gb/s PAM4可見光傳輸系統，經實驗結果分析，通過20公尺的自由空間傳輸後獲得了良好的誤碼率性能和三個獨立的清晰眼圖。本論文所提出的基於VCSEL二階注入鎖模機制建構56 Gb/s PAM4可見光傳輸系統可以在未來的無線基礎設施顯著作用，從而有效地提供高傳輸速率和較長距離的自由空間傳輸。

A 56 Gb/s four-level pulse amplitude modulation (PAM4) light-based WiFi (LiFi) transmission based on a 680-nm/5.4-GHz vertical-cavity surface-emitting laser (VCSEL) with a two-stage injection-locked technique is proposed and demonstrated. Experimentally results show that a 5.4-GHz VCSEL with a two-stage injection-locked technique is effective for 56 Gb/s PAM4 LiFi transmissions.
To the authors’ knowledge, it is the first one to adopt a 680-nm VCSEL transmitter with two-stage injection-locked technique in a 56 Gb/s PAM4 LiFi transmission. A pair of doublet lenses is employed in the proposed PAM4 VCSEL-based LiFi transmissions to enhance the free-space link.
The link performances of the proposed PAM4 LiFi transmissions have been analyzed in real time. Good bit error rate performance and three independent clear eye diagrams are obtained over a 20-m free-space link. Such a proposed 56 Gb/s PAM4 VCSEL-based LiFi transmission with two-stage injection-locked technique has the potential to play a significant role in future wireless infrastructure for providing high transmission rate and long free-space transmission distance effectively.

目 錄

摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
表 目 錄 vii
圖 目 錄 viii
第一章 緒 論 1
1.1 研究背景 1
1.1.1 光纖通訊 1
1.1.2 可見光通訊 2
1.2 研究動機與目的 5
1.3 論文架構 5
第二章 系統相關原理介紹 7
2.1 直接調變 7
2.2 不歸零編碼 8
2.3 四階脈衝振幅調變 10
2.4 外部光源注入鎖模技術 12
2.5 眼圖 14
2.6 誤碼率 19
第三章 系統相關元件介紹 20
3.1 垂直共振腔面射型雷射 20
3.2 光隔離器 21
3.3 分光鏡 22
3.4 轉阻放大器 23
3.5 光檢測器 24
3.6 錯誤檢測器 26
3.7 光學系統元件介紹 27
第四章 基於VCSEL二階注入鎖模機制建構56 Gb/s PAM4可見光傳輸系統 30
4.1 文獻回顧與實驗簡介 30
4.2 實驗架構 34
4.3 實驗結果與分析 37
4.4 結語 46
第五章 總結與未來展望 47
參考文獻 49
Publication List 54
中英對照 56

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