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題名 | 數位多通道被動光纖網路設計=The Design for a Passive Optical Network of Digital Multiple Channels |
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作者姓名(中文) | 許玉芳; | 書刊名 | 建國學報 |
卷期 | 15 1996.06[民85.06] |
頁次 | 頁453-477 |
分類號 | 448.6 |
關鍵詞 | 次載波多工; 光網路單元; 動態光靈敏度; 誤碼率; Subcarrier multiplexing; Optical network; Dynamic optical sensitivity; Bit error rate; |
語文 | 中文(Chinese) |
中文摘要 | 本論文主要設計一低價位多光源次載波多工(SCM)被動光纖網路(PON)系統,做為寬頻ISDN與寬頻用戶迴路的介面。上流(up-stream)1500nm光波長迴路,採用SCMA技術,可容納8個光網路單元(ONU),每個ONU使用一顆低價位之多模態FP雷射二極體,取代傳統一顆昂貴的DFP雷射二極體及複雜的高頻多工電路每個通路傳輸速率可達0.5Mbit/s。下流(down-stream)1300nm光波長迴路,傳送電路採用數位直接調變方式,傳輸速率可達700Mbit/s,硬體製作包括多個E/0傳送模組,0/E接收模組,FSK調變及解調電路。整個綱路經實際測試,誤碼率為10-9,且雙向同時多通路傳輸時,測得下流迴路700Mbit/s,及上流迴路100Kbit/s,223-1,NRZ雜亂碼的貓眼圖,由清晰的貓眼圖及雙向動態光靈敏度在15dB以上,証明此網路系統有良好的傳輸特性。 |
英文摘要 | In this paper, a low cost passive optical network of multiple optical in Subcurrier multiplexing is designed for the interface of broadband ISDN and subscriber loop. At the 1550nm up-stream loop, using SCMA technique can extend to 8 optical network units. The low cost multi-longitude FP laser diodes and simple electronic circuits instead of a expensive DFB laser diode and complex electronic multiplex circuit. Every channel transmitting bit rate is 0.5Mbit/s high. At the 1300nm down-stream loop, the transmitting bit rate is up to 700Mbit/s. This system hardware design include several E/O modules, O/E modules, FSK signal modulation and demodulation circuits. Two results are obtained: (1) The clear eye pattern are achieved. They are two direction multi-channel data transmittions, the bit error rate less then 10, 223-1, NRZ psudo random code for both 700Mbit/s of down-stream and 100Kbit/s of up-stream. (2) The dynamic optical sensitivity is up to 15dB. The above characteristics demonstrate that this is an excellent passive optical network. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。