液晶光纖元件於微波相位偏移器之研究

Microwave Photonic Phase Shifter based on a Liquid Crystal Fiber device

陳宏易(Hung-Yi Chen)

指導教授 ： 彭朋群

國立臺北科技大學/電資學院/光電工程系研究所/碩士(2011年)

摘要

本篇論文提出了利用塗佈液晶混合材料的側磨光纖達成微波相位偏移器的方法。利用液晶混合材料的熱感與光感特性，可以分別藉由溫控與光控加以控制液晶相的狀態進而產生不同程度的相位偏移。由實驗結果可以得知本篇論文所提出的微波溫控與光控相位偏移器可以成功地在不同的調變頻率範圍產生特定的相位偏移量，並且可以將此微波相位偏移器應用在相位陣列天線系統上。

關鍵字

相位偏移器 ； 側磨光纖 ； 液晶

並列摘要

This paper presents a microwave photonic phase shifter based on a photoresponsive liquid crystals overlay side-polished fiber (LCSPF) device operating in the telecommunication wavelength. The phase shift of the device is tuned by modulating the refractive index (RI) of LC, which comes from the phase transition of the LC mixture materials under thermal or optical control. The proposed microwave photonic phase shifter has the potentiality to be applied to the phase array antenna in the all-fiber telecommunication system.

並列關鍵字

phase shifter ； side-polished fiber ； liquid crystal

參考文獻

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