کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5025403 1470584 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low cost highly sensitive miniaturized refractive index sensor based on planar waveguide
ترجمه فارسی عنوان
سنسور شاخص انکسار منفی بسیار حساس با هزینه کم مبتنی بر موجوالار مسطح
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی (عمومی)
چکیده انگلیسی
A simple, compact, low cost and highly sensitive refractive index sensor based on single mode leaky planar waveguide is reported. An optical waveguide fabricated on glass substrate has been proposed to construct the sensor. In this structure Cytop works as guiding layer while Teflon forms the cladding layers. Propagation of light in Cytop layer is strongly affected by the refractive index of external medium placed on top of Teflon layer. If the refractive index of the medium is close to or greater than that of Cytop, there is leakage of power from Cytop layer to external medium which affects the transmittance of the waveguide. The structure can be designed to have strong variation in transmittance with the refractive index of external medium and, thus, can be utilized as a highly sensitive refractive index sensor for biomedical applications. In this paper we have carried out the designs of such refractive index sensor for various biological and chemical applications. We design a sensor having sensitivity of the order of 104 dB/RIU. Fabrication of the sensor can be carried out by using spin coating technique. Long sensing range, high sensitivity, simple manufacturing process and compactness make the sensor attractive for diverse applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - International Journal for Light and Electron Optics - Volume 143, August 2017, Pages 158-166
نویسندگان
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