Low-loss wavelength-selective integrated waveguide coupler based on tilted Bragg gratings
Low-loss wavelength-selective integrated waveguide coupler based on tilted Bragg gratings
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发表时间：
2019
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通讯作者：
Athias;W. J.;Eisen;atthew;P. T.;Osner;Ames;G. C.;Ates;Orin;G. B.E.;Awith;Eter;G.;S. R;mith;orak
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作者：
Athias;W. J.;Eisen;atthew;P. T.;Osner;Ames;G. C.;Ates;Orin;G. B.E.;Awith;Eter;G.;S. R;mith;orak
提出并数值研究了一种新型集成光波导耦合器。具有倾斜布拉格光栅的两个波导选择性地耦合到离散的反向传播包层模式，该包层模式充当在波导之间传输功率的媒介。这提供了一个高度通用的平台，可以作为具有0和100%之间的任意耦合比的低损耗耦合器，作为窄带宽波长滤波器，以及作为相位选择开关，该相位选择开关传输两个相对相位固定的光波，但在单个设备内反射正交相位。© 2019美国光学学会
We propose and investigate numerically a new kind of integrated optical waveguide coupler. Two waveguides with tilted Bragg gratings couple selectively to a discrete counter-propagating cladding mode which acts as an intermediary to transfer power between the waveguides. This gives a highly versatile platform that can act as a low-loss coupler with arbitrary coupling ratio between 0 and 100%, as a narrowbandwidth wavelength filter, and as a phase-selective switch that transmits two light waves of a fixed relative phase but reflects the orthogonal phase within a single device. © 2019 Optical Society of America