• 作者： 李順程；陳振益；柯頓
• 作者服務機構： 輔仁大學物理研究所; 中山科學院三所
• 中文摘要： 本文對金屬覆蓋式之光纖偏振器之原理，詳加研究並提出一種新的、簡易而有效的方法，以?製?品質之偏振器。將光纖研磨進入其纖心的0?0.4微米，再接連鍍一層約265nm厚之氟化鎂膜及一層約100nm厚之鋁膜，可製得體積 小且堅固耐用的高品質偏振器。其最佳之研磨深度可藉油滴法量度通光衰減?，精確且快速的測定。如此製作之偏振器 成品，在0.63μ波長，平均具有28dB之偏振比和2dB之漏失，而在0.82μ波長則有34dB之偏振比與3dB之漏失。
• 英文摘要： Metal-clad fiber polarizers have been thoroughly studied. A new method for fabricating high quality polarizers with simplicity and high efficiency is introduced. Compact and endurable polarizers are fabricated easily by polishing the fiber 0~0.4μ down to its core, and then overcoating it with a 265nm thick MgF2 film and a l00nm thick Al film, consecutively. The optimal depth of polishing is accurately and quickly determined by measuring the throughput attenuation as a low refractive index liquid-drop is applied. Polarizers made in this way have an average extinction ratio of 28dB with an insertion loss of 2dB at 0.63μ wavelength, or a 34dB extinction ratio with a 3dB loss at 0.82μ
• 中文關鍵字： fiber polarizer; metal-clad; new
• 英文關鍵字： --