Design and Fabrication of CATV Optical Fiber Deep Node 董志鴻、林漢年
E-mail: [email protected]
ABSTRACT
ABSTRACT In order to provide the CATV(Cable Television) subscribers'''' demands on ever increasing bandwidth and service quality of the currently implemented HFC(Hybrid Fiber Coax) network architecture, we proposes a new optical node architecture — Optical Fiber Deep Node - to extend the fiber delivery distance of HFC network in this thesis. With this concept, the fiber network can reach much deeper to the subscribers’ ends and also reduce the number of the line extender amplifiers built within the coaxial cable network. We can therefore achieve the optimal architecture of increasing transmission bandwidth, improving system
performance and reliability, and reducing the network maintenance cost. In the thesis, we will first introduce the HFC network fundamental, and then emphasize what the advantage and feasibility of this new Optical-Fiber-Deep-Node’s architecture over standard HFC network architecture by comparing their differences. Furthermore, we will also explore the theory, design and fabricating technologies of the embedded active devices (such as photo detector, RF amplifier) and passive devices (such as PAD, equalizer and diplex filter) that strongly affect the system performance.
Keywords : CATV ; HFC ; Optical Node ; Line Extender Amplifier ; Photo Detector ; RF Amplifier ; PAD ; Equalizer ; Diplex Filter
Table of Contents
目錄 封面內頁 簽名頁 授權書．．．．．．．．．．．．．．．．．．．．．．．．．iii 中文摘要．．．．．．．．．．
．．．．．．．．．．．．．．iv 英文摘要．．．．．．．．．．．．．．．．．．．．．．．．v 誌謝．．．．．．．
．．．．．．．．．．．．．．．．．．．vi 目錄．．．．．．．．．．．．．．．．．．．．．．．．．．vii 圖目錄．
．．．．．．．．．．．．．．．．．．．．．．．．x 表目錄．．．．．．．．．．．．．．．．．．．．．．．．
．xiii 第一章 緒論 1.1 混合光纖同軸電纜網路介紹 ．．．．．．．．．．1 1.2 被動混合光纖同軸電纜網路．．．．．．．
．．．．2 1.3 研究動機．．．．．．．．．．．．．．．．．．．5 第二章 基本理論 2.1 光通訊基本原理簡介．．．．．
．．．．．．．．．7 2.2 光纖通訊的主要特徵及優點．．．．．．．．．．．9 2.3 訊號功率 ．．．．．．．．．．．．
．．．．．．11 2.4 增益、插入損失、反射損失及隔離度 ．．．．．．13 2.5 雜訊 ．．．．．．．．．．．．．．．．．
．．．17 2.5.1 雜訊的種類．．．．．．．．．．．．．．．17 2.5.2 雜訊指數．．．．．．．．．．．．．．．．20 2.6 載波雜訊比．．．．．．．．．．．．．．．．．．22 2.7同調干擾和串調變．．．．．．．．．．．．．．．24 2.8 S參 數．．．．．．．．．．．．．．．．．．．．34 第三章 光接收模組設計與製作 3.1簡介．．．．．．．．．．．．．．
．．．．．．．37 3.2光接收模組的架構與規格．．．．．．．．．．．．37 3.3電路架構說明．．．．．．．．．．．．
．．．．．39 3.3.1檢光模組．．．．．．．．．．．．．．．． 39 3.3.2第一級射頻放大器．．．．．．．．．．．．40 3.3.3溫度補償線路．．．．．．．．．．．．．．40 3.3.4等化器(Equalizer)．．．．．．．．．．．． 43 3.3.5插拔式衰減 器．．．．．．．．．．．．．．46 3.3.6推挽式混合CATV放大模組．．．．．．．．50 3.3.7高通濾波器．．．．．．
．．．．．．．．．51 3.3.8方向耦合器．．．．．．．．．．．．．．．53 3.4功能架構比較．．．．．．．．．．．．
．．．．．54 第四章 射頻輸出放大模組設計與製作 4.1簡介．．．．．．．．．．．．．．．．．．．．．56 4.2射頻輸 出放大模組的架構與規格．．．．．．．．．56 4.3電路架構說明．．．．．．．．．．．．．．．．．58 4.3.1衰減 器(PAD)．．．．．．．．．．．．．． 59 4.3.2等化器(EQ)．．．．．．．．．．．．．．． 59 4.3.3預置放大器與後級 放大器．．．．．．．．．60 4.3.4溫溫補償元件(TH)．．．．．．．．．．．． 61 4.3.5功率分配器．．．．．．．．．
．．．．．． 62 4.3.6雙向濾波器 ．．．．．．．．．．．．．．．64 4.4與傳統光接收機的射頻輸出放大模組比較．．．
．．67 第五章 特性量測 5.1光接收模組的量測與討論．．．．．．．．．．．．70 5.2射頻輸出放大模組的量測與討論．
．．．．．．．．74 5.3整體光接收機的量測與討論．．．．．．．．．．．79 第六章 結論 ．．．．．．．．．．．．．
．．．．．．．．．82 參考文獻．．．．．．．．．．．．．．．．．．．．．．．．85 附錄A 檢光模組2609B規格 ．
．．．．．．．．．．．．．．87 附錄B 射頻放大IC RF2317規格 ．．．．．．．．．．．．．89 附錄C 有線電視系統傳 輸用同軸電纜損失值參考表 ．．．．．91 附錄D Motorola公司推挽式混合CATV放大模組MHW8272A 規格 ．．．．．．
．．．．．．．．．．．．．．．．93 附錄E Motorola公司功率倍增式混合CATV放大模組 MHW9187規格 ．．．．．．
．．．．．．．．．．．94
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