本論文使用矽基液晶元件作為空間光調變器，進行應用於無線光通訊雙向傳輸接取節點系統之研究與實現。
本論文首先分別針對使用低密度分波多工技術及高密度分波多工技術之接取系統進行上載鏈路方向與下載鏈路方向之系統設計，續而透過使用ZEMAX光學軌跡追蹤模擬軟體進行系統模擬與效能分析。從系統模擬結果與理論之分析，本節點系統之設計具備使用高密度分波多工之技術，因此在增加使用波長之數量將能有效提升接取系統之效能為前提下，本論文採用高密度分波多工技術，以C-band 100 GHz為波長之間隔，使用連續八個波長進行傳輸距離為2.5公尺之雙向傳輸接取節點系統之實現。最後並藉由使用電光調變器上載2.5Gbps訊號至可調式雷射光源，對本論文所實現之雙向傳輸接取節點系統進行數據傳輸測試。
從系統損耗之分析得知本論文所實現之雙向傳輸接取節點系統之功率損耗依使用不同之波長，在上載鏈路方向與下載鏈路方向分別為16.27~20.85dB與15.95~24.11dB之間。而從數據傳輸測試之結果可知在上載鏈路方向，每一通道所量測到的誤碼率皆小於〖10〗^(-12)，而在下載鏈路方向除了擴大光斑大小會導致部分通道所量測到的誤碼率為〖10〗^(-9)外，其餘通道所量測到的誤碼率仍都是維持小於〖10〗^(-12)。

本論文授權指導教授用於論文發表、專利申請及各機關計畫之申請

In this thesis, a Liquid Crystal on Silicon (LCoS)-based device was used as a Spatial Light Modulator (SLM) to experimentally implement a bidirectional access node for the application in optical wireless communications.
From our research, the system level node architecture design for the application either in the uplink and downlink transmission of optical wireless communications system was conducted through the utilization of Coarse Wavelength Division Multiplexing (CWDM) and Dense Wavelength Division Multiplexing (DWDM) transmission technology respectively. The optical system performance was evaluated through ZEMAX ray tracing simulation program and the results shown that the proposed access node architecture is capable of using DWDM transmission technology. In the experimental implementation of the proposed access node architecture, DWDM-based eight wavelengths with a channel spacing of 100 GHz were used. An indoor optical wireless communication system at a transmission distance of 2.5 meters was established to evaluate the performance of the proposed access node architecture. Digital transmission tests were also performed at a data transmission rate of 2.5 Gbps.
According to the experimental measurements, the system light losses were analyzed and the results shown that depending on the use of different wavelength, the proposed access node architecture has a light loss of 16.27dB ~ 20.85dB in the uplink transmission and 15.95dB ~ 24.11dB in the downlink transmission. In the digital transmission test, the bit error ratio (BER) of each wavelength received in the uplink transmission were all less than 〖10〗^(-12) and in the downlink transmission, except that some wavelengths have a BER of 〖10〗^(-9) due to the expanding of their spot sizes at the receiver, the rest of the other wavelengths were all have a BER less than 〖10〗^(-12).

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