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| تعداد مقالات | 8,994 |
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بررسی نظری تاثیر ضخامت لایه جاذب برحساسیت حسگرهای تار نوری نازک شده | ||
| الکترومغناطیس کاربردی | ||
| دوره 11، شماره 1 - شماره پیاپی 26، خرداد 1402، صفحه 87-93 اصل مقاله (855.61 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| نویسندگان | ||
| محمد واحدی* 1؛ علی ریاحی2 | ||
| 1استادیار، دانشکده فیزیک، دانشگاه علم و صنعت ایران، تهران، ایران | ||
| 2دانشجوی دکترا، دانشکده فیزیک، دانشگاه علم و صنعت ایران، تهران، ایران | ||
| تاریخ دریافت: 19 آذر 1400، تاریخ بازنگری: 03 بهمن 1400، تاریخ پذیرش: 15 تیر 1401 | ||
| چکیده | ||
| در این مقاله، یک مطالعه نظری جامع برای بررسی اثر ضخامت لایه جاذب بر حساسیت حسگرهای تار نوری نازک شده که منجر به بیشترین حساسیت می شود، انجام شده است. به این منظور، یک روش پلکانی برای بررسی تأثیر ضخامت لایه بر حساسیت حسگرهای تار نوری معرفی شده است. با توجه به نتایج بدست آمده از شبیه‌سازی‌های انجام شده با استفاده از این روش، مشخص شد که افزایش حساسیت حسگر تار نوری نازک شده به ضریب شکست لایه وابسته است. وابستگی حساسیت به ضریب شکست لایه جاذب و ضخامت لایه جاذب در دو حالت مختلف در نظر گرفته شده است: اگر ضریب شکست لایه کوچکتر از ضریب شکست تار باشد، مشاهده می‌شود که حساسیت با افزایش ضخامت لایه افزایش می‌یابد، اما زمانی که ضریب شکست لایه بزرگتر از ضریب شکست تار باشد، نقاط بهینه‌ای در نمودار حساسیت برحسب ضخامت لایه وجود دارد که در این نقاط حساسیت بیشترین مقدار را دارد. | ||
| کلیدواژه‌ها | ||
| حسگر تار نوری؛ تار نوری نازک شده؛ روش پلکانی؛ میدان میرا؛ حسگر ضریب شکست؛ ضخامت لایه جاذب | ||
| عنوان مقاله [English] | ||
| Theoretical study of the effect of the layer thickness on the sensitivity of tapered fiber optic sensors | ||
| نویسندگان [English] | ||
| mohammad vahedi1؛ ali riahi2 | ||
| 1Assistant Professor, Faculty of Physics, Iran University of Science and Technology, Tehran, Iran | ||
| 2PhD student, Faculty of Physics, Iran University of Science and Technology, Tehran, Iran | ||
| چکیده [English] | ||
| In this paper, a comprehensive study was performed to investigate the effect of the absorbent layer thickness on the tapered fiber sensor sensitivity, which leads to the highest sensitivity for the sensor. For this purpose, a staircase method was introduced to investigate the effect of layer thickness on the sensitivity of fiber optic sensors. According to the results obtained from the simulations performed using this method, it was found that the type of variation in the sensitivity of the tapered fiber optic sensor depends on the refractive index of the layer. To investigate the dependence of sensitivity on the layer thickness and refractive index of the layer, two different general cases have been considered. If the refractive index of the layer is smaller than the refractive index of the fiber, it can be seen that the sensitivity increases with increasing the layer thickness. On the other hand, when the refractive index of the layer is greater than the refractive index of the fiber, there are optimal points in the sensitivity plot versus the layer thickness, which demonstrate the highest sensitivities. | ||
| کلیدواژه‌ها [English] | ||
| Fiber sensor, Tapered optical fiber, Staircase method, Evanescent waves, Refractive index sensor, layer thickness | ||
| مراجع | ||
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