Built-In Microplanar Lens for Light Coupling to Two-Dimensional Photonic Crystal Waveguide

Naoki IKEDA  Yu TANAKA  Hitoshi KAWASHIMA  Yoshimasa SUGIMOTO  Toshifumi HASAMA  Kiyoshi ASAKAWA  Hiroshi ISHIKAWA  

IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.2   pp.243-246
Publication Date: 2012/02/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.243
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
integrated optics,  photonic crystals,  waveguides,  

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We propose a built-in planar lens for coupling light to a waveguide on a 2-D photonic crystal (PhC) membrane. A 2-D PhC waveguide with the built-in lens has been fabricated with AlGaAs. Improvement in coupling performance is discussed in comparison to waveguides with straight ends as cleaved.