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研究生： 郭毓泰
Yu-Ti Kuo
論文名稱： 縮小化光子能隙微帶結構應用在雙向電光網路分析儀探頭之研製
Study and Fabrication of Bilateral Electro-Optic Probes for Lightwave Network Analyzer Using Compact PBG Microstrip Structures
指導教授： 曹士林
Tsao, Shyh-Lin
學位類別： 碩士
Master
系所名稱： 光電工程研究所
Graduate Institute of Electro-Optical Engineering
論文出版年： 2008
畢業學年度： 96
語文別： 中文
論文頁數： 62
中文關鍵詞： 分頻多工器 、環型器 、微波光子能隙 、雙向量測
英文關鍵詞： Frequency Division Multiplexer, Circulator, Microwave Photonic Band-gap, Two-way Measurement Technique
論文種類： 學術論文
相關次數： 點閱：173  下載：0 
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    • 本文提出一種頻寬由0.9 GHz到9 GHz的雙向光頻域量測分析儀之探頭，此種探頭的電路部份是由一種縮小型微波光子晶體結構所構成。所提出的縮小型微波光子晶體結構可適合地實現低通與帶通濾波器，更改善原本微波光子晶體佔據大面積的問題。利用此電路實現雙向電光元件量測探頭，配合微波網路分析儀，可應用於雙向光元件的量測，這對快速量測光元件之S參數頻率響應有很大的助益。

    In this thesis, we proposed a bilateral electro-optic probe used in two-way optical frequency domain measurement network analyzer. The bandwidth of proposed electro-optic probe is from 0.9 GHz to 9 GHz. Using compact microwave photonic band-gap structure to implement the circuit part of electro-optic probe, a large size of microwave circuit can be reduced, and it also can applied to fabricate low-pass and band-pass filters. Combined this electro-optic probe proposed in this thesis with commercialized vector network analyzer, we can measure the S-parameters of optical devices with fast two-way measurement.

    Contents Chinese Abstract i English Abstract ii Acknowledgement iii Contents iv List of Figures vii Chapter 1 Introduction 1 1.1 Research Motives and Background 1 1.2 Dissertation Structure 3 Chapter 2 LPF with Compact Microwave PBG Structure 4 2.1 PBG Low Pass Filter 4 2.2 Compact Microwave PBG Structure 6 2.2.1 Equivalent Circuit Models 7 2.2.2 Simulated Results of S-parameters 7 2.2.2.1 Compact PBG Unit Cell 7 2.2.2.2 Two-stage CM-PBG 8 2.3 Implementation of CM-PBG Structure 8 2.3.1 CM-PBG Low Pass Filter 8 2.3.2 Two Stage CM-PBG Low Pass Filter 9 2.4 Summary ..10 Chapter 3 CM-PBG Frequency Division Multiplexer 16 3.1 3~8.5 GHz CM-PBG Band-pass Filter 17 3.1.1 Equivalent Circuit Model of CM-PBG BPF 17 3.1.2 Enhanced Bandwidth CM-PBG BPF 18 3.2 8.5~15 GHz CM-PBG High-pass Filter 18 3.2.1 Model of 8.5~15 GHz CM-PBG HPF 19 3.2.2 Enhanced Selectivity of Compact PBG Filter 19 3.3 Experimental Results of CM-PBG Filter 20 3.4 Implementation of CM-PBG FDM 20 3.5 Summary 21 Chapter 4 Bilateral Electro-Optic Probes 31 4.1 Microwave Circulator 31 4.1.1 Theoretical Model 31 4.1.2 Experimental Results 35 4.2 Two-way Optical Frequency Domain Measurement 35 4.3 Bilateral Electro-Optic Probes 39 4.3.1 Wideband Microwave Circulator 39 4.3.2 Optical Transmitter, Optical Circulator, and Optical Receiver 39 4.3.3 Experimental Results of Electro-Optical probe 40 4.4 Summary 41 Chapter 5 Conclusions 55 References 57 Publication Lists x List of Figures Fig. 2–1 The conventional PBG structure 11 Fig. 2–2 The LPF using conventional PBG structure 11 Fig. 2–3 The proposed CM-PBG structure 11 Fig. 2–4 Equivalent circuit of CM-PBG 12 Fig. 2–5 Simulated insertion loss with different Cg value. 12 Fig. 2–6 Simulated return loss with different Cg value 13 Fig. 2–7 Two-stage CM-PBG LPF 13 Fig. 2–8 Equivalent circuit of two-stage CM-PBG LPF 14 Fig. 2–9 Simulated S-parameters of two-stage CM-PBG LPF 14 Fig. 2–10 The measured S-parameters of CM-PBG unit cell 15 Fig. 2–11 The measured S-parameters of two-stage CM-PBG LPF 15 Fig. 3–1 The first proposed CM-PBG BPF 22 Fig. 3–2 Equivalent circuit model of the first CM-PBG BPF 22 Fig. 3–3 EM simulated results of first CM-PBG BPF 23 Fig. 3–4 Enhanced bandwidth structure of CM-PBG BPF 23 Fig. 3–5 Equivalent circuit model of enhanced bandwidth CM-PBG BPF 24 Fig. 3–6 Simulated S parameters of enhanced bandwidth CM-PBG BPF 24 Fig. 3–7 Layout of the CM-PBG HPF 25 Fig. 3–8 Equivalent circuit model of the CM-PBG HPF 25 Fig. 3–9 Simulated results of the CM-PBG HPF 26 Fig. 3–10 (a)Layout of the second CM-PBG BPF with three-stage structure. (b) The first CM-PBG. (c) The second CM-PBG 27 Fig. 3–11 Simulated results of the CM-PBG HPF with three-stage structure 28 Fig. 3–12 Measured frequency responses of CM-PBG BPF 28 Fig. 3–13 Predicted results of proposed CM-PBG FDM 29 Fig. 3–14 The layout of CM-PBG FDM 29 Fig. 3–15 Measured frequency responses of CM-PBG FDM 30 Fig. 4-1 Equivalent circuit of microwave circulator 3A3BQ 43 Fig. 4–2 Equivalent circuit of microwave circulator M3C4080 43 Fig. 4–3 Experimental setup for measuring frequency response of microwave circulator 44 Fig. 4–4 The measured results of microwave circulator 3A3BQ 44 Fig. 4–5 The measured results of microwave circulator M3C4080 45 Fig. 4–6 The measured results of microwave circulator SR0812C21 45 Fig. 4–7 Block diagram of two-way optical frequency domain reflection/transmission system 46 Fig. 4–8 Block diagram of proposed two-way electrooptic probe 47 Fig. 4–9 Block diagram for measuring wideband CM-PBG FDM 48 Fig. 4–10 (a) S-parameters of each output signal. (b) The measured results of wideband CM-PBG FDM 49 Fig. 4–11 The photograph of the wideband microwave circulator 49 Fig. 4–12 Experimental setup of optical transmitter 50 Fig. 4–13 Experimental results of optical transmitter 50 Fig. 4-14 Experimental setup of optical transmitter cascades optical circulator 51 Fig. 4–15 Experimental result of optical transmitter cascades optical circulator 51 Fig. 4-16 Block diagram of measuring two-way electrooptic probe 52 Fig. 4–17 Experimental result of electro-optic probe 53 Fig. 4–18 The photograph of the electro-optic probe 53 Fig. 4–19 Bilateral electro-optic probes 54

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