Unidirectional propagation in planar optical waveguide

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F15%3A86096594" target="_blank" >RIV/61989100:27640/15:86096594 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Unidirectional propagation in planar optical waveguide
Original language description
In optical communication systems, the isolator provides a unidirectional transfer of electromagnetic radiation from a laser source to an optical fiber. The basic structure consists of a central region formed by an InP semiconductor multilayer with gain sandwiched between a semiconductor buffer film and a semiconductor substrate. To enable propagation of waveguide modes both the buffer and the substrate display a lower permittivity than the central region. The semiconductor buffer is covered by a ferromagnetic alloy layer with the in-plane magnetization perpendicular to the propagarion vector of guided modes. The waveguide TM modes penetrating through the buffer to the surface of magneric film display amplitude and phase changes dependent on the sign ofthe transverse magnetization in the magnetic film and the sign of the longitudinal propagation constant of the waveguide mode. This property, known as magneto-optic (MO) transverse effect, is essential for the nonreciprocal (unidirection
Czech name
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Czech description
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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