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19 September 2018 Waveguide grating as a Bragg mirror on Bloch surface waves based platform for 2D integrated optics applications
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Abstract
We study and demonstrate a Bloch-surface-wave-based nano-thin waveguide grating. The waveguide grating is characterized as a Bragg mirror at telecommunication wavelengths. The structure is a dielectric multilayer platform designed to sustain a Bloch surface wave. Such a platform is regarded as a foundation for in-plane integrated optics. The Kretschmann coupling configuration, as the most widely used approach, is utilized to excite the optical surface waves. We use multi-heterodyne scanning near-field optical microscopy to characterize the waveguide gratings in the near-field. The fabricated waveguide grating shows the expected Bragg mirror behavior with a measured reflectivity of approximately 72 % inside the photonic band gap at λ = 1553 nm.
© (2018) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
R. Dubey, B. Vosoughi Lahijani, M. Roussey, and H. P. Herzig "Waveguide grating as a Bragg mirror on Bloch surface waves based platform for 2D integrated optics applications", Proc. SPIE 10730, Nanoengineering: Fabrication, Properties, Optics, and Devices XV, 107300O (19 September 2018); https://doi.org/10.1117/12.2320858
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