کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449282 | 1512523 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Compact vector fiber-optic displacement sensor using an asymmetric Mach-Zehnder interferometer
ترجمه فارسی عنوان
سنسور جابجایی فیبر نوری کامپکت با استفاده از تداخل سنجی ماک-زنجر نامتقارن
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کلمات کلیدی
حسگر فیبر نوری، اندازه گیری جابجایی بردار، مدولاسیون شاخص انکساری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
We demonstrate a fiber-optic Mach-Zehnder interferometer for vector displacement measurement. The sensor is a compact structure in which a short length of thin-core fiber (TCF) is sandwiched between two single mode fibers (SMFs) by core-aligned fusion splicing. The TCF stub contains a refractive index modification (RIM) region which serves as a mode-coupling window over the interface between the TCF's core and cladding. We employed femtosecond laser-based direct inscription to achieve precise position of the RIM over a chosen length close to the core-cladding interface of the TCF and ensure large and stable refractive index increase in the inscribed region. Strong coupling between core and cladding modes is generated at the RIM, resulting in a well-defined interference spectrum in transmission. The transmission spectrum exhibits strong bending dependence and direction discrimination due to the azimuthally asymmetrical distribution of the RIM over the fiber's cross section. We achieved vector displacement measurement by wavelength interrogation of the interference spectrum. In the frequency spectrum, the intensity of a cladding mode resonance presents linear response to displacement as well as temperature independence.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 400, 1 October 2017, Pages 74-78
Journal: Optics Communications - Volume 400, 1 October 2017, Pages 74-78
نویسندگان
Xunli Yin, Ruixiang Zhou,