طراحی و شبیه‌سازی حسگر میکرو- جابه‌جایی نوین مبتنی بر بلور فوتونی با ضریب شکست منفی
محورهای موضوعی : مهندسی برق و کامپیوتر
1 - دانشگاه گلستان
کلید واژه: DNA حسگر میکرو- جابجاییبلور فوتونیشکست منفیموج¬برحساسیتضریب برازش,
چکیده مقاله :
در این مقاله طراحی و شبیه‌سازی یک حسگر میکرو- جابه‌جایی جدید با بخش‌های متحرک و ثابت مبتنی بر بلورهای فوتونی ارائه شده است. نشان داده می‌شود که استفاده از بلور فوتونی با ضریب شکست منفی در بخش ثابت حسگر، با متمرکزکردن توان نوری عبوری در قسمت ورودی موج‌بر تعبیه‌شده در بخش متحرک، منجر به بهبود ویژگی‌های عملکردی حسگر می‌شود. نتایج حاصل از شبیه‌سازی عددی با استفاده از روش FDTD مؤید آن است حسگر پیشنهادی با برخورداری از حساسیت (1- a) 1/1 (که در آن a ثابت شبکه ساختار بلور فوتونی است)، گستره جابه‌جایی مجاز a 35/0 و ضریب برازش 99848/0 از عملکردی مطلوب در مقایسه با سایر طرح‌های پیشنهادی برای حسگر میکرو- جابه‌جایی برخوردار است.
In this paper, design and simulation of a new micro-displacement sensor based on photonic crystal fixed and movable segments is presented. It has been shown that using negative refraction photonic crystal in the fixed segment, the transmitted power is concentrated on the entrance of the movable segment, and the sensor specifications are improved. Based on the FDTD simulation results, the sensitivity, the operational displacement range and the regression coefficient of the proposed sensor are 1.1 (a-1), 0.35a and 0.99848, respectively. The simulation results show that the proposed sensor has a good performance and could well be used in micro-displacement measuring systems.
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