臺灣博碩士論文加值系統

近幾年來，科技逐漸的創新、突破、進步，在現今社會上網路已經成為生活上不可缺少的，這些技術往往是需要更高的頻寬容量，而光纖通訊系統具備了此特點。其中微波光纖被動式光網路為最常見的技術之一，不僅能供應傳輸的頻寬容量，且具有低損失、保密性高及系統的靈活性，能為提供使用者高品質與多元豐富的網路服務。為了使系統能多元化、實用化，將以往使用單向傳輸方式改變為雙向傳輸，但在雙向傳輸系統中會產生瑞利背向散射的問題。故為了改善瑞利背向散射的問題，在傳輸的路徑上及調變方式做了改變。
本論文提出利用電吸收調製雷射(EAM)及光間隔器(IL)建構一套微波光纖被動式光網路(ROF-PON)之雙向傳輸系統之研究。發射端使用電吸收調製雷射為光源，利用光間隔器濾出奇次(odd)光源與偶次(even)光源進行25km單模光纖傳輸並做測試，而偶次光源作為上行光源再次利用，並經過強度調變與相位調變不同的調變方式再次調變，傳送至終端檢測。

In recent years, technology gradually innovation, breakthroughs, progress, nowadays the Internet has become an internet of life indispensable, these techniques often require high bandwidth capacity in fiber-optic transmission systems. Radio over Fiber-Passive Optical Network (ROF-PON) is a common technology, can supply bandwidth capacity transmission and has low loss, high security and flexibility of the system, provides users with high-quality and diverse wealth of network services. In order to enable the system to diversify, practical, will change the previous using unidirectional transmission of bidirectional transmission, but in bidirectional transmission system will generate Rayleigh backscattering problem. Changes in the transmission path and modulation scheme can improve the problem of Rayleigh backscattering(RB)。
In the proposed scheme, the studies for bidirectional transmission systems in ROF-PON using Electro-Absorption modulator(EAM) and Optical Interleaver(IL). Transmitter using electro-absorption modulator laser as the light source, interleaver filter the odd and even source through the 25km single mode fiber(SMF) transmission do the test, the even source is downlink wavelength is reused for uplink in BS, through the intensity modulation and phase modulation of different modulation schemes again modulated ,and transmitted toward the central office(CO).

明志科技大學碩士學位論文指導教授推薦書-i
明志科技大學研究所碩士班論文口試委員會審定書-ii
明志科技大學碩士學位論文授權書-iii
誌謝-iv
摘要-v
Abstract-vi
目錄-vii
圖目錄-x
表目錄-xii
第一章 緒論-1
1.1 研究背景與動機-1
1.2 研究目的與方法-2
1.3 論文大綱-3
第二章 光纖通訊-4
2.1 微波光纖-5
2.2 被動式光網路-7
2.3 光間隔器-9
2.4 瑞利背向散射-10
第三章 利用EAM及IL建構ROF-PON之雙向傳輸系統架構(I)-11
3.1 實驗示意圖-11
3.2 直接偵測法介紹-12
3.3 實驗架構-13
3.4 實驗結果-14
第四章 利用EAM及IL建構ROF-PON之雙向傳輸系統架構(II)-21
4.1 實驗架構-21
4.2 實驗結果-22
第五章 利用EAM及IL建構ROF-PON之雙向傳輸系統架構(III)-33
5.1 實驗架構-33
5.2 實驗結果-35
第六章 實驗架構(II)與(III)分析比較 40
6.1 實驗調變方式-40
6.2 眼圖分析比較-41
6.3 錯誤率分析-43
第七章 結論、未來研究與改進-45
7.1 結論-45
7.2 本研究之成果-46
7.3 問題改進與未來研究-47
參考文獻-48

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