Compact slanted grating couplers | Zendy

Bin Wang | Zendy; Jianhua Jiang | Zendy; Gregory P. Nordin | Zendy

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Compact slanted grating couplers

Author(s) -

Bin Wang,

Jianhua Jiang,

Gregory P. Nordin

Publication year - 2004

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/opex.12.003313

Subject(s) - optics , grating , coupled mode theory , fiber bragg grating , planar , phase matching , diffraction grating , blazed grating , coupling (piping) , refractive index , physics , phase (matter) , materials science , optical fiber , computer science , laser , computer graphics (images) , quantum mechanics , metallurgy

We present a compact and efficient design for slanted grating couplers (SLGC's) to vertically connect fibers and planar waveguides without intermediate optics. The proposed SLGC employs a strong index modulated slanted grating. With the help of a genetic algorithm-based rigorous design tool, a 20microm-long SLGC with 80.1% input coupling efficiency has been optimized. A rigorous mode analysis reveals that the phase-matching condition and Bragg condition are satisfied simultaneously with respect to the fundamental leaky mode supported by the optimized SLGC.

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