本文提出並展示一個遠端泵激WDM-PON架構來成功實現10 Gb/s對稱頻寬的雙向傳輸，此構想利用光放大器產生的「寬頻增幅自發性放射(ASE)」光源，經由「陣列式波導光柵(AWG)」切割成多個單一通道用作WDM-PON系統的多通道光源。應用增益飽和「半導體光放大器(SOA)」以串接方式去抑制每一通道的雜訊，之後下行鏈路每一通道使用「電致吸收調變器(EAM)」調變速率10.7 Gb/s的“不回復零格式(NRZ)”資料，同時假設本文所提架構傳輸會使用具7％冗餘的「前向錯誤更正(FEC)」碼修正系統誤碼率。我們還提出了一個紅頻帶(C/red-band)作種配置，以提供上行鏈路種子光源，並使用一個「反射式電致吸收調製器(REAM)」來作上行信號的編碼。為了實現傳輸距離達25公里，我們使用一個「大有效面積光纖(LEAF)」，以減少色散效應。為了補償被動元件和調變的損耗，我們採用「遠程泵激摻鉺光纖放大器(RP-EDFA)」提供上行和下行信號所需的額外增益。實驗結果證明，下行和上行傳輸共計可提供32個通道，每一通道 10 Gb/s資料速率可傳輸達25公里遠，相當於上/下行鏈路單方向總計都能提供320 Gb/s的傳輸容量。

We propose and demonstrate a remotely pumped WDM-PON architecture to achieve 10 Gb/s symmetrical bandwidth for bidirectional transmission. In this scheme, a wideband amplified spontaneous emission (ASE) from an optical amplifier is sliced into multiple channels by an arrayed waveguide grating (AWG) and used as multi-channel optical sources for WDM-PON system. Each channel is noise suppressed by using a gain-saturated cascaded semiconductor optical amplifer (SOA) and then modulated at 10.7 Gb/s of nonreturn-to-zero (NRZ) signals by using electrochromic absorption modulator (EAM), assuming forward error correction (FEC) with 7% overheads for improving the bit error rate (BER) of system. We also propose a redband-seeding scheme to provide uplink seeding light and use a reflected electro-absorption modulator (REAM) to encode the upstream signals. In order to achieve a transmission up to 25 km distance, we use a larger effective area fiber (LEAF) to reduce the dispersion effect. To compensate the loss by passive components and modulation, we employ a remotely pumped erbium-doped fiber amplifier (RP-EDFA) to provide extra gain for both downstream and upstream signals. The experimental results show that the downstream and upstream transmission can provide 10 Gb/s data rate over 25 km for 32 channels, which corresponds to a total capacity of 320 Gb/s, on each direction.

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