本論文探討以電吸收調變器同時接收與發射訊號之技術，並探討結合用戶端低成本光源的光網路架構。文中採用C波帶分散式回饋雷射直接調變2.5GHz 16QAM類比訊號於光纖網路中傳輸，再以電吸收調變器將此接收，經伺服器處理後再透過同一電吸收調變器載上1.25Gbps數據資料訊號傳至用戶端後，以此光源注入鎖模法布理-比洛雷射二極體，直接調變1.25Gbps數據資料進行上行傳輸，達到雙向傳輸。在不影響下行數位訊號品質的情況下，分光注入鎖模法布理-比洛雷射二極體，直接調變1.25Gbps、27-1虛擬隨機序列NRZ碼後，以單模光纖上行訊號傳輸25公里，若採用16QAM訊號時，錯誤向量強度(EVM)可維持在3%以下，上行25公里單模光纖接收光功率靈敏度為-30.53dBm，功率償付為1 dBm。

In this thesis, an optical network is investigated experimentally using only an electro-absorption modulator (EAM) as a receiver and a transmitter, apart from a low-cost light source. In our experiment, the C-band distributed feedback laser (DFB) was directly modulated by a 2.5GHz 16QAM radio signal and transmitted downward to users. Then, the radio signal is received by the electro-absorption modulator. This radio signal can be processed by a server and then retransmit through the same electro-absorption modulator and transmit downward to users. On the other hand, the user transmits data upward using a Febry-Pérot laser diode (FP-LD) injection locked by the downward light. Thus, a bidirectional optical transmission is achieved. Experimental results are shown for the transmission over 10-km through a single-mode fiber (SMF), The upstream data are 1.25 Gbps NRZ signal and are transmitted over 1-km single-mode fiber. The radio signal EVM can be kept at 3%. Bidirectional transmission sensitivity of -32.2 dBm and -30.53 dBm are shown for the downstream 1-km and upstream 25-km SMFs. Furthermore, the constraint of injection-locking and the limitation of optical power are also analyzed experimentally.

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