کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7927458 1512541 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High quality factor and high sensitivity chalcogenide 1D photonic crystal microbridge cavity for mid-infrared sensing
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
High quality factor and high sensitivity chalcogenide 1D photonic crystal microbridge cavity for mid-infrared sensing
چکیده انگلیسی
We present and theoretically investigate a mid-infrared (mid-IR) optical sensor based on a Ge11.5As24Se64.5 one-dimensional photonic crystal microbridge cavity (PhC-MC). Optimizing the structure of the PhC-MC strongly confines the resonant mode field to the air region, thereby greatly enhancing the overlap and interaction of the light field and target analytes. A high calculated sensitivity (2280 nm per refractive index unit) is achieved with a resonant wavelength of 4132 nm. The figure of merit of the device for sensing is extremely high (929,750) because of the high quality factor and sensitivity of the cavity. The sensing part of the cavity is also small (50×3 µm2). The proposed PhC-MC can be an ideal platform for on-chip integrated mid-IR optical sensing.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 382, 1 January 2017, Pages 361-365
نویسندگان
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