کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7223628 | 1470561 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Optical biosensor based on a cladding modulated grating waveguide
ترجمه فارسی عنوان
بیوسنسور نوری براساس یک موجبر مدولاسیون روکش است
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موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی (عمومی)
چکیده انگلیسی
We have proposed and analyzed a photonic biosensor based on a cladding modulated grating waveguide comprising of the three channels on silicon-on-insulator (SOI) platform. The optical mode is propagated in the center channel and the other two channels interacted with the lateral field. Gratings are designed in the outer channels and parameters are optimized to get a narrow stopband in the transmission spectra. The analysis of the proposed configuration is performed through the eigenmode expansion (EME) method. For a sensing, shift in a resonant band is utilized for a change in a refractive index of a biomaterial. The structure is evaluated for three-waveguide thickness (220â¯nm, 150â¯nm, and 100â¯nm) by considering the fabrication tolerances. The sensor structure with a 100â¯nm thickness has delivered a higher sensitivity of 322.96â¯nm/RIU with a limit of detection of the order of 1.03â¯Ãâ¯10â4 RIU. A designed sensor is easy to fabricate using existing CMOS fabrication facility and can be used for an application of lab-on-chip devices.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optik - Volume 166, August 2018, Pages 103-109
Journal: Optik - Volume 166, August 2018, Pages 103-109
نویسندگان
Sourabh Sahu, Jalil Ali, Preecha P. Yupapin, Ghanshyam Singh,