以外部注入 FP-LD 為光源之 HDTV/Gigabits 雙向WDM-PON傳輸系統

在本篇論文中，我們提出，並驗證一個建構於外部光注入技術，以費比裴洛式雷射二極體(FP-LD)為光源，傳送高畫質電視及Gigabit之雙向WDM-PON傳輸系統。高畫質電視(HDTV)/ Gigabits乙太網路之高速率頻寬需求，對於現行有線電視及電信網路都構成傳輸瓶頸。首先利用最新H.264/AVC壓縮技術，驗證其壓縮效率，使HDTV可輕易在現行網路傳輸，並提高WDM-PON傳輸容量。費比裴洛式雷射二極體(FP-LD)雖具有低成本效益，但因多模態輸出特性，限制傳輸距離及性能。因此使用EDFA 所產生之寬頻輸出光源(BLS)，經光通帶濾波器(OBPF)分離出二個不同之光波長，再利用外部光源注入技術，改變FP-LD多模態為近似單模態輸出，得到大於40 dB的旁模抑制比(SMSR)，並以ASE注入FP-LD鎖模後的多重光源，達到WDM-PON的經濟效益，提高數位傳輸系統性能和傳輸距離。同時利用光纖能夠提供極大的傳輸容量、優良的網路安全性及建置、維護具有彈性等優點，架構雙向WDM-PON傳輸系統。

關鍵字

外部光源注入技術；高畫質電視；分波多工被動光網路；掺鉺光纖放大器； H.264/AVC ；費比裴洛式雷射；寬頻光源；旁模抑制比

並列摘要

In this thesis, We’ve outlined and validated a transportation system that could provide high definition television and gigabit Ethernet bidirectional WDM-PON which was constructed by an external light injection technique. The high-speed requirement for HDTV and Gigabits cause a bottleneck of current cable TV and teleco-network. First, the compressed rate was increased by using brand new H.264/AVC technique. It not only improves current transportation quality of HDTV, but also increases the capacity of WDN-PON. As we can see the cost effective of Fabry Perot Laser Diode, there is limitation in the transportation distance and capacities due to the characteristic of multiple longitudinal modes output. Based on the BLS produced by EDFA and through OBPF, we can separate two different light wavelengths and have the SMSR is greater than 40dB, then change the PF-LD multiple longitudinal modes to a similar single module output by using external light injection technique. Since the economic resources of WDM-PON are achieved by using multiple light source after injection-locked FP-LD by ASE, the transportation capacity and distance has been increased. A bidirectional WDM-PON transportation system with a maximum capacity, a network security and flexibility is also constructed.

並列關鍵字

External light injection technique ； High definition television ； Wavelength division multiplexing-Passive optical network ； Erbium Doped Fiber Amplifier ； H.264/AVC ； Fabry-Perot laser diodes ； Broadband light source ； Side-mode suppression ratio

參考文獻

[1] S. J. Park, C. H. Lee, K. T. Jeong, H. J. Park, J. G. Ahn, K. H. Song, “ Fiber-to-the-Home Services Based on Wavelength-Division-Multiplexing

Passive Optical Network ” J. Lightwave Technol. 22 , pp.2582, 2004.

[2] Paul E. Green, Jr. “ Fiber to the Home: The Next Big Broadband Thing ” IEEE Communications Magazine , pp. 100, 2004.

[5] Po-Chou Lai “ Transmission Improvement of DWDM Systems Under VCSELs With Injection-Locked Technique and LEAF Transport ” IEEE Photon. Technol. Lett., Vol. 17,No.10, pp.2212 , 2005.

[5] Gerd Keiser “ Information rate Optical fiber communication” third edition page 4 ,ISBN 0-07-116468.

國際替代計量

以外部注入 FP-LD 為光源之 HDTV/Gigabits 雙向WDM-PON傳輸系統

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