臺灣博碩士論文加值系統

在此篇論文中，我們示範了新穎垂直共振腔面射型雷射(VCSELs)的架構。首先，在OOK加上等化器或正交多頻多工(OFDM)調製下，我們使用最佳化設計過的高速與超低功率效能多個模態的VCSEL，波長在850奈米，在多模光纖下傳輸，成功實現了超低能源數據距離比分別為163(292) 和 106 fJ⁄(bit∙km)。緊接著，我們使用單一模態的VCSEL，波長一樣在850奈米，這顆VCSEL有著非常高的輸出功率(6.7 mW; 側模抑制比(SMSR): 30 dB)，同樣地，使用OFDM調製在多模光纖下傳輸，我們成功達到新紀錄的速率×距離(bit-rate distance products) (26 Gbps×3.5 km)。

In this thesis, we demonstrate novel structure of vertical-cavity surface-emitting lasers (VCSELs). First, we use of optimized design 850-nm VCSEL which is multi-mode laser for high-speed with ultra-low power consumption performance under On-off keying (OOK) modulation with FFE/DFE equalization or OFDM modulation format, ultra-low EDDR of 163(292) and 106 fJ⁄(bit∙km) through OM4 multi-mode fiber (MMF) transmissions are successfully achieved. Second, we used a fundamental single-mode 850-nm VCSEL with record-high single-mode output power (6.7 mW; SMSR: 30 dB), and record-high bit-rate distance products (26 Gbps×3.5 km) for OM4 multi-mode fiber (MMF) transmission under OFDM modulation formats.

Acknowledgements ii
Chinese Abstract iii
English Abstract iv
List of Figures vii
List of Tables ix
Chapter 1 Introduction 1
1.1 Background 1
1.2 Motivation 3
1.2.1 Optical vs. Electrical Interconnects 4
1.2.2 VCSELs vs. Edge-Emitting Lasers (EELs) 5
1.2.3 Multi-mode fiber (MMF) vs. Single-mode fiber (SMF) 7
Chapter 2 Physical Principles and VCSEL Structure 8
2.1 Rate Equations 8
2.2 Device Structure and Fabrication 11
Chapter 3 Introduction of the Equalizer 14
3.1 Inter-symbol Interference 14
3.2 Equalizers 15
3.2.1 Symbol-Spaced Equalizer (Feed-Forward Equalizer) 16
3.2.2 Decision-Feedback Equalizer 17
Chapter 4 OFDM 19
4.1 Orthogonal Frequency Division Multiplexing 19
4.2 Comparison between OFDM and OOK 20
4.2.1 Advantages of OFDM 21
4.2.2 Disadvantages of OFDM 21
Chapter 5 Experimental Results 22
5.1 VCSEL Characteristics 22
5.2 FFE and DFE 27
5.3 OFDM for device A 30
5.4 OFDM for device B 34
Chapter 6 Conclusions and Outlooks 39
6.1 Conclusions 39
6.2 Outlooks 39
References …………………………………………………………………………..41

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