Sala A L, Bagley B G, Deck R T
Department of Physics and Astronomy, University of Toledo, Toledo, Ohio 43606, USA.
Appl Opt. 1999 Aug 20;38(24):5133-43. doi: 10.1364/ao.38.005133.
We address the theory of temporal soliton switching in a planar geometry directional coupler constructed from silica and doped silica glass and operating at the central wavelength of 1.55 microm, significant for erbium-doped amplification. We formulate the field in the coupler in terms of the supermodes of the total structure and take account of the two transverse dimensions of the rectangular channels. In the case of the weak coupling between channels consistent with elimination of pulse breakup, the effect of the fields in the outer corner regions of the channels results in a switching intensity that differs significantly from that derived from coupled-mode theory on the basis of a slab model of the coupler.
我们研究了一种由石英和掺杂石英玻璃构成、工作在1.55微米中心波长（对掺铒放大很重要）的平面定向耦合器中的时间孤子开关理论。我们根据整个结构的超模来描述耦合器中的场，并考虑了矩形通道的两个横向维度。在通道间弱耦合且符合消除脉冲分裂的情况下，通道外角区域场的影响导致开关强度与基于耦合器平板模型的耦合模理论得出的结果有显著差异。
