本論文提出一新穎的動態波長分配(DWA)機制，架構在乙太被動光纖網路系統，用以解決網路流量突增的問題，維持網路流量的穩定性。
乙太被動光纖網路近來被認為是接取網路最具有應用前景的技術，採用點對多點拓樸架構， 動態波長分配提供頻寬分享且可跨越多重的被動光纖網路架構；由調變雷射、陣列波導、粗/細過濾器構成有彈性的光存取方式，可當TDM PON 與WDM PON的橋樑，此架構將廣泛為下一代光纖網路所採用。
本文架構由單模雷射、可調變波長雷射、陣列波導光柵、緩衝器等組成，經MATLAB模擬軟體計算出機率模型分佈，同時由模擬結果決定最佳的切換機制，此系統以模擬架設並實際經過校園網路實際測量，當網路負載增加到一定程度時，經由DWA機制的實施，所量測的網路反應時間或者是網路流量結果證實，本系統確實能夠達到疏解負載增加的問題，進而發揮機動性的網路流量支援設備功能，達到最經濟、最簡單的區域性網路架構。

This work proposes the dynamic wavelength allocation mechanism to solve the problem of sudden traffic loading for the Ethernet passive optical networks(PON).
Ethernet PON has recently been considered as the most prospective application technology in access network. It is adopted the point-to-multi-point(P2MP) topology construction,Which can greatly reduce the amount of optical fiber and the disbursement.
Moreover the DWA mechanism provides the bandwidth sharing across multiple physical PONs. A flexible new optical access solution is reached by combing the tunable lasers, the arrayed waveguide gratings, and the coarse/fine filters. The excellent stability of the network can bridge the gap between conventional TDM PONs and WDM PONs, and the powerful architecture is a promising candidate of the optical access networks for the next generation.
This structure is composed of the single mode laser, the tunable laser, the array waveguide, and the buffer storage device. The probability model distribution is calculated by the MATLAB, and the mechanism of optimal separation is determined by the computer simulation. This system is tested through the measured reaction time or the flow capacity of network on campus network when the traffic load increases up to a loading level. It is shown that the DWA system, can effectively solve the problems when the load increases, Which is the most economical and simplest local network infrastructure for the PONs.

[1] Yu-Li Hsueh; et,al,” SUCCESS-DWA: a highly scalable and cost-effective optical access network” IEEE Optical communication,Volume 42,Issue 8, Page(s):S24 - S30, Aug. 2004
[2] C. R. Giles, et,al,”Access PON Using Downstream 1550-nm WDM Routing and Upstream 1300-nm SCMA Combing Through a Fiber-Grating Router”IEEE PHOTONICS TECHNOLOGY LETERS, VOL 8,NO 11,P.P.1549 - 1551,NOVEMBER 1996
[3] S. L. Woodward, Senior Member, IEEE, P. P. Iannone, Member, IEEE, K. C. Reichmann, Member, IEEE,and N. J. Frigo, Member, IEEE,”A Spectrally Sliced PON Employing Fabry–Perot Lasers” IEEE PHOTONICS TECHNOLOGY LETERS, VOL 10,NO 9,P.P.1337 – 1339,SEPTEMBER 1998
[4] Chang-Joon Chae, et,al,”A PON System Suitable for Internetworking Optical Network Units Using a Fiber Bragg Grating on the Feeder Fiber” IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 11, NO. 12,P.P.1686 – 1688, DECEMBER 1999
[5] Chang-Joon Chae, Member, IEEE, and Nam-Hyun Oh,”WDM/TDM PON System Employing a Wavelength-Selective Filter and a Continuous-Wave Shared Light Source”IEEE PHOTONICS TECHNOLOGY LETTERS, VOL. 10, NO. 9,P.P.1325 – 1327, SEPTEMBER 1998
[6] Soo-Jin Park, et,al, ”Fiber-to-the-Home Services Based on Wavelength-Division-Multiplexing Passive Optical Network” Journal of Lightwave Technology, Vol. 24, Issue 12, pp. 4568-4583 December 2006
[7] Giles, et,al, ”Single-Fiber Access PON using Downstream 1550 nm WDM Routing and Upstream 1300nm Power Combining through a Fiber-Grating Router”Optical Communication, 1996. ECOC ''96. 22nd European Conference on Publication Date: 15-19 Sept. 1996, Volume: 3, On page(s): 27- 30
[8] U.Hilbk, et,al,”HIGH-CAPACITY UPGRADE OF A PON BY MEANS OF WAVELENGTH-ROUTERS AND WDM TECHNIQUES ” WDM Technology and Applications (Digest No. 1997/036), IEE Colloquium on page(s): 3/1-3/5, 6 Feb 1997
[9] J.B. Stark, et.al, ”Cascaded WDM Passive Optical Network With a Highly Shared Source ”Photonics Technology Letters,IEEE, Vol 9,issue 8 On page(s): 1170-1172, Aug.1997
[10] Westphal, et,al, ”AWG based WDM Upgrade of a PON ” Lasers and Electro-Optics Society Annual Meeting, 1996.LEOS 96.IEEE Vol 2,On page(s): 183-184, 18-21, Nov 1996
[11] B. Kuhlow, et,al, ”AWG-Based Device for a WDM Overlay PON in the 1.5-μm Band ” Photonics Technology Letters,IEEE, Volume: 11,Issue 2 On page(s): 218-220, Feb 1999
[12]G.Przyrembel,et,al,”Multichannel1.3μm/1.5μmAWGmultiplexer/demultiplexer for WDM-PONs ”Electronics Letters vol 34, February 1998
[13] Desai, B.N. et. al, ”An optical implementation of a packet-based(Ethernet) MAC in a WDM passive optical network overlay ” Optical Fiber Communication Conference and Exhibit,2001.OFC 2001, Vol 3, On page(s): WN5-1- WN5-3, 2001
[14] Lee, C.-H. et,al,” Fiber to the Home Using a PON Infrastructure” IEEE JNL, Volume 24, Page(s):4568 – 4583, Dec. 2006
[15] Yen, Wei; Tseng, Shih-Wei,” Delay Sensitive EPON Dynamic Bandwidth Allocation Mechanism” IEEE CNF, Volume 1, Page(s):1 – 4, Oct. 2006
[16] Lei Bin; Xue Chen; Rong Gao; Xiaguang Lu;” A Dynamic Bandwidth Allocation Scheme with Two Threshold Reporting and Strict Priority Scheduling for Milti-Service EPONs” IEEE CNF, Page(s):1 – 5, 25-27 Oct. 2006
[17] Yu-Li Hsueh, et,al,”A Highly Flexible and Efficient Passive Optical Network Employing Dynamic Wavelength Allocation” JOURNAL OF LIGHTWAVE TECHNOLOGY, VOL. 23, NO. 1,P.P.277 – 286, JANUARY 2005
[18] Kyeong Soo Kim, Advanced System Technology, STMicroelectronics, Stanford Networking Research Center, Packard Building, Room 073, Stanford, CA 94305, USA,”On The Evolution of PON-Based FTTH Solutions”Information Sciences 149,P.P. 21 – 30, 2003,Preprint submitted to Information Sciences, 31 May 2002
[19] Anestis Karasaridis and Dimitrios Hatzinakos Electrical 〝A NON-Gaussian SELF-SIMILAR PROCESS FOR BROADBAND HEAVY TRAFFIC MODELING〞University of Toronto , IEEE Volume 5 , 8-12 Nov. 1998 Page(s):2995 - 3000
[20] Jeong-Ju Yoo, et,al, ”A WDM-Ethernet hybrid passive optical network architecture” Volume: 3, On page(s): 4 pp. Publication Date: 20-22 Feb. 2006
[21] Richard Durrett , Probability：Theory and Examples 2nd, Cole publishing Company , 2004
[22] 鍾沛璟,美國光纖大夢—光纖到家,光連雙月刊第54期,2004年11月
[23] 郭巍 劉冬 孫署 陳雪,面向FTTH的EPON系統應用與管理,通信世界,2005年8月31日
[24] 工研院作(譯)者 范國寶,乙太被動式光纖網路—加速光纖到家發展,創新第132期,94年12月
[25] 賴映杰,光纖通訊元件與模組技術之最新發展趨勢,物理雙月刊二十三卷二期,2001年4月
[26] 國際編譯館,日本光纖到路發展值得關注,台灣通訊 No.134,2005年2月
[27] 李志祥 曹世強 林盈達,網路測試：標準、工具與測試中心,國立交通大學資訊科學系
[28] 吳明蔚 林盈達,網路實驗工具, 國立交通大學資訊科學系
[29] 林盈達 郭以謙 姚長利 陳育良 吳政璟,骨幹路由交換器測試評比：功能、效能、符合性與互通性,工研院交大網路測試中心
[30] 林盈達 林伯青 林毓達 溫碩彥 歐陽銘康 詹智為 林權宏 黃福祥,網路安全產品測試評比；功能與效能, 工研院交大網路測試中心