Ultra-compact efficient mode converter with metamaterial structures

Zhang, Jingjing; Qiu, Pengfei; Shi, Xiaodong; Chen, Xuefeng; Dai, Zijie; Song, Xiaoxian; Yang, Junbo; Ou, Haiyan; Guo, Kai

doi:10.1016/j.infrared.2022.104200

Cited by 7 publications

(1 citation statement)

References 29 publications

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“…With the rapid development of photonic integrated circuits, it is convenient to revisit the discontinuity problem from the standpoint of mode conversion, which shall allow for more precise control of the flow of light. In recent years, there has been a lot of interest in the conversion of discrete modes in photonic waveguides due to its multiple applications [2,[4][5][6]. A mode converter relies on the waveguide propagation of the allowed modes.…”

Section: Introductionmentioning

confidence: 99%

Higher order mode conversion induced by discontinuities in waveguides

Lauterio-Cruz,

Manzanares Martínez,

Gaspar Armenta

2023

Rev. Mex. Fís.

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In this paper, we provide a theoretical prediction about the likelihood of producing high-order modes using, as far as we know, the simplest mode converter. The mode converter is a simple discontinuous waveguide for which reflection and transmission have recently been reported. As a result of the scattering of the fundamental guided mode (TE0), we have found that the high-order mode excitation is highly dependent on the position of the discontinuity. On the one hand, we discovered that in the presence of a discontinuity in the propagation direction, only even modes (TE0 and TE2) are excited, skipping the odd mode (TE1). When a lateral shift is considered, however, both even and odd higher-order modes (TE1 and TE2) are generated. Furthermore, after some lateral shifting, we found that only the pure TE2 mode is propagated.

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Section: Introductionmentioning

confidence: 99%