Opt Lett. 2013 Nov 15;38(22):4880-3. doi: 10.1364/OL.38.004880.
Stable discrete compactons in interconnected three-line waveguide arrays are found in linear and nonlinear limits in conservative and in parity-time (PT)-symmetric models. The compactons result from the interference of the fields in the two lines of waveguides ensuring that the third (middle) line caries no energy. PT-symmetric compactons require not only the presence of gain and losses in the two lines of the waveguides but also complex coupling, i.e., gain and losses in the coupling between the lines carrying the energy and the third line with zero field. The obtained compactons can be stable and their branches can cross the branches of the dissipative solitons. Unusual bifurcations of branches of solitons from linear compactons are described.
在线性和非线性极限下，在保守和宇称时间（PT）对称模型中，在互连的三线波导阵列中发现了稳定的离散紧化孤子。紧化孤子是由两条波导中的场干涉产生的，这确保了第三条（中间）线不携带能量。PT 对称的紧化孤子不仅需要两条波导中的增益和损耗存在，而且还需要复杂的耦合，即携带能量的两条线与零场的第三条线之间的增益和损耗。得到的紧化孤子可以是稳定的，它们的分支可以穿过耗散孤子的分支。描述了从线性紧化孤子到孤子分支的不寻常分岔。
