Compact and high-efficient wavelength demultiplexing coupler based on high-index dielectric nanoantennas<xref rid="cpb_27_9_094217fn1" ref-type="fn">*</xref><fn id="cpb_27_9_094217fn1"><label>*</label><p>Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0205700 and 2015CB932403) and the National Natural Science Foundation of China (Grant Nos. 11174062, 51472057, and 21790364).</p></fn>

Compact and high-efficient wavelength demultiplexing coupler based on high-index dielectric nanoantennas**

Project supported by the National Key Research and Development Program of China (Grant Nos. 2017YFA0205700 and 2015CB932403) and the National Natural Science Foundation of China (Grant Nos. 11174062, 51472057, and 21790364).

Tan Jingfeng^†, Pang Hua, Meng Fengkai, Jiang Jin

(color online) (a) Leftward and (b) rightward transmissions in the waveguide as functions of the thickness h₁ and wavelength. (c) Transmission and (d) splitting ratio as functions of wavelength for thickness h₁ = 590 nm. The incident Gaussian beam is focused to a 3-μm spot. (e) Magnitudes of scattered magnetic fields at wavelengths 1465 nm and 1580 nm in the xoz plane.