کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5007534 1461602 2017 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Intensity-modulated refractive index sensor with anti-light source fluctuation based on no-core fiber filter
ترجمه فارسی عنوان
سنسور شاخص انکساری مدولاسیون شدت با نوسانات نور ضد نور بر اساس فیلتر فیبر بدون هسته
کلمات کلیدی
شاخص انکساری سنور، نوسانات منبع نور، فیبر بدون هسته فیبر براگ گریتینگ،
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
چکیده انگلیسی
A differential intensity-modulated refractive index (RI) sensor consisting of a no-core fiber (NCF) filter, a circulator and two fiber Bragg gratings (FBGs) is proposed and demonstrated. A section of the NCF is sandwiched between two parts of single mode fibers (SMFs) to form a band-pass filter. The Bragg wavelengths of the FBGs are chosen at the two edges of the filter, respectively. The peak wavelength of the NCF filter has a red-shift with the increase of the surrounding refractive index (SRI) while the Bragg wavelengths have no change, which results in the variation of the difference of the two FBGs reflective intensities, thus the differential intensity modulation to the SRI can be accomplished. Compared with directly connecting the NCF filter and the FBGs, this sensing structure can increase the output power so as to improve the measuring resolution. The experimental results show that the RI sensitivities are −99.191 dB/RIU and −139.958 dB/RIU at the range of 1.3329-1.3781 and 1.3781-1.401, respectively. In addition, the disturbance from the light source fluctuation and temperature cross sensitivity can be minimized effectively, which has great potential in actual applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics & Laser Technology - Volume 97, 1 December 2017, Pages 358-363
نویسندگان
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