1X3 Fused Tapered Sing-mode Fiber Polarization Beamsplitters

• Main Authors: Yong-Feng Su, 蘇永豐
• Other Authors: Cheng-Wen Wu
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/50911490252744104838

碩士 === 逢甲大學 === 光電物理研究所 === 94 === A 1X3 linearly arrayed fused tapered single-mode fiber polarization beamsplitter has been proposed. An unpolarized light launched its center fiber can be divided into three linearly polarized light at its three output ports. The first polarization modulation waist point in the two power transfer curves of the two side coupled fibers is chosen as the fabrication stopping point. At this coupler pulling point, one polarized component of the input unpolarized light distributes the same power to each coupled port, while the other polarized component keeps all power at the throughput port. We used the electric fusion method to fabricate this novel 1X3 single-mode fiber coupler. 35-nm polarization bandwidth and 25-dB maximum PDL were obtained at the two coupled ports, but the maximum PDL value at the throughput port was only 12 dB.