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Erschienen in: Optical and Quantum Electronics 9/2018

01.09.2018

Mode conversion and absorption in an optical waveguide under cascaded complex modulations

verfasst von: Qing-jie Liu, Shao-lin Ke, Wei-wei Liu

Erschienen in: Optical and Quantum Electronics | Ausgabe 9/2018

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Abstract

We investigate the mode conversion in a dielectric waveguide under spatially complex modulation, which refers to modulating both the real and imaginary parts of the dielectric permittivity. The complex modulations are applied separately in two distinct regions in the waveguide. The mode conversion can be controlled by adjusting the initial phase difference of the modulations in the two cascaded regions and by varying the phase difference of real and imaginary modulations in each region. The former is analogous to an Aharonov–Bohm (AB) phase and the latter suggests a symmetric propagation phase. Comparing to one modulated region, the cascaded modulations could benefit to realizing laser, coherent perfect absorber, and bidirectional invisibility. The study may contribute to the applications in optical switches and mode converters.

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Metadaten
Titel
Mode conversion and absorption in an optical waveguide under cascaded complex modulations
verfasst von
Qing-jie Liu
Shao-lin Ke
Wei-wei Liu
Publikationsdatum
01.09.2018
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 9/2018
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-018-1617-7

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