In-phase and out-of-phase supermodes were selectively excited (with modal content >90%) in the wavelength range near 1030 nm in a silica multicore fibre with 5 5 coupled cores using a spatial light modulator. Group velocity dispersion (GVD) parameters of 21 ps² km⁻¹ and 14 ps² km⁻¹ at 1030 nm were measured for in-phase and out-of-phase supermodes, respectively, using an interferometric scheme. The numerically simulated GVD values agree with the experimental results. The calculated zero-dispersion wavelengths (ZDWs) of 1360 nm and 1180 nm for in-phase and out-of-phase supermodes are red-shifted and blue-shifted, respectively, compared to the ZDW of silica glass. The anomalous dispersion for the out-of-phase supermode is predicted in the telecommunication O-band near 1300 nm. The theoretical explanation of the difference in the wavelength-dependence of GVD for in-phase and out-of-phase supermodes is given.

同相和异相超模在具有 5 5 耦合芯的石英多芯光纤中使用空间光调制器在 1030 nm 附近的波长范围内被选择性激发（模态含量 >90%）。21 ps ² km ^-1和 14 ps ² km ^{-1 的}群速度色散 (GVD) 参数使用干涉测量方案分别测量了 1030 nm 处的同相和异相超模。数值模拟的 GVD 值与实验结果一致。与石英玻璃的 ZDW 相比，计算出的同相和异相超模的 1360 nm 和 1180 nm 零色散波长 (ZDW) 分别发生红移和蓝移。在 1300 nm 附近的电信 O 波段中预测了异相超模的异常色散。给出了同相和异相超模的 GVD 波长相关性差异的理论解释。