本論文主要是利用矽基液晶元件(Liquid Crystal on Silicon, LCoS)為空間光調變器(Spatial Light Modulator, SLM)來進行可應用於NG-PON2之多波長選擇開關的設計與研究。
本論文主要將針對1×36多波長選擇開關及4×16多波長選擇開關之技術進行設計與研究，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之分析。其中在4×16多波長選擇開關的部分，本論文更進一步透過動態頻譜等化器之設計解決功率傳輸不一之問題，同時也針對極化相依損耗問題進行極化不敏感之設計。而在進行1×36以及4×16多波長選擇開關實現之前，本論文首先針對應用於LCoS上之G-S演算法進行研究，並透過優化之G-S演算法於近場、遠場之實驗來驗證此演算法於近場、遠場傳輸時之效能提升，並應用於1×36以及4×16多波長選擇開關之設計與實現。
從1×36多波長選擇開關之實驗分析系統損耗得知，在單點切換以及多重播送的部份，其總插入性損耗約介於-11dB至-16之間以及-12dB至-17dB之間，而單點切換之Crosstalk均小於-30dB。而在4×16多波長選擇開關之實驗分析系統損耗得知，其總插入性損耗約介於-21dB至-26dB之間，Crosstalk均小於-30dB。最後藉由上載2.5Gbps之NRZ-OOK訊號進行數據傳輸測試以驗證系統之傳輸特性，從眼圖量測之結果分析，在1×36以及4×16多波長選擇開關之實驗，其各接收光纖所接收到之各波長皆可視為無位元錯誤(error-free)。

In this thesis, a Liquid Crystal on Silicon (LCoS)-based device was used as a Spatial Light Modulator (SLM) to experimentally implement two wavelength selective switching systems (WSS), which were based on 1×36 and 4×16 switching architecture respectively for the application in NG-PON2.
The design of the optical system and performance simulations were conducted and evaluated through ZEMAX ray tracing simulation program. A dynamic spectrum equalizer through the design of LCoS-SLM was proposed to improve the power uniformity of transmitted wavelengths, and the system multicast transmission was achieved through an efficient design of computer-generated holograms based on GS algorithm.
According to the experimental measurements, the system light loss of the switching system based on two switching architecture were analyzed and the results shown that depending on different wavelength selection scenario with/without multicast transmissions, 1×36 switching architecture has a system light loss of -11dB ~ -17dB and the 4×16 switching architecture has a light loss of -21dB ~ -26dB. The crosstalk of the system either in a 1×36 switching architecture or in a 4×16 switching architecture were all measured to be less than -30dB.
Finally, digital transmission tests were performed at a data transmission rate of 2.5 Gbps. The performance evaluation of each wavelength received at the output fiber ports of each switching system estimated from the measured Q factor of eye diagrams were all regarded as error-free.

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