Sato Kiminori, Maruyama Ryo, Kuwaki Nobuo, Matsuo Shoichiro, Ohashi Masaharu
Fujikura Ltd. 1440, Mutsuzaki, Sakura, Chiba, 285-8550, Japan.
Opt Express. 2013 Jul 15;21(14):16231-8. doi: 10.1364/OE.21.016231.
An optimized two-mode optical fiber (TMF) with the graded index (GI) profile is designed and fabricated. We clarify an appropriate region of GI-TMF satisfying DMD = 0 ps/km, the large effective area A(eff), and the low bending loss for LP(11) at 1550 nm. According to our fiber design, GI-TMF is successfully fabricated to have the large effective area A(eff) of 150 μm(2) for LP(01) mode, and low DMD below 36 ps/km including zero in the C-band. We expect that our design GI-TMF is suitable for MDM and can reduce MIMO-DSP complexity.
设计并制造了一种具有渐变折射率（GI）分布的优化双模光纤（TMF）。我们明确了满足差分模延迟（DMD）= 0 ps/km、大有效面积A(eff)以及1550 nm处LP(11)的低弯曲损耗的GI-TMF的合适区域。根据我们的光纤设计，成功制造出的GI-TMF对于LP(01)模具有150 μm²的大有效面积A(eff)，并且在C波段的低DMD低于36 ps/km，包括零值。我们期望我们设计的GI-TMF适用于多模复用（MDM）并且能够降低多输入多输出数字信号处理（MIMO-DSP）的复杂度。
