کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7925955 | 1512510 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
All-fiber probe for optical coherence tomography with an extended depth of focus by a high-efficient fiber-based filter
ترجمه فارسی عنوان
پروب تمام فیبر برای توموگرافی یکپارچگی اپتیک با عمق گسترده ای از تمرکز توسط یک فیلتر مبتنی بر فیبر با کارایی بالا
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کلمات کلیدی
فیلتر مبتنی بر فیبر، عمق تمرکز گسترش، روش پخش پرتو، توموگرافی انسجام نوری،
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
چکیده انگلیسی
Although methods have been proposed to maintain high transverse resolution over an increased depth range, it is not straightforward to scale down the bulk-optic solutions to minimized probes of optical coherence tomography (OCT). In this paper, we propose a high-efficient fiber-based filter in an all-fiber OCT probe to realize an extended depth of focus (DOF) while maintaining a high transverse resolution. Mode interference in the probe is exploited to modulate the complex field with controllable radial distribution. The principle of DOF extension by the fiber-based filter is theoretically analyzed. Numerical simulations are conducted to evaluate the performances of the designed probes. A DOF extension ratio of 2.6 over conventional Gaussian beam is obtainable in one proposed probe under a focused beam diameter of 4.6μm. Coupling efficiencies of internal interfaces of the proposed probe are below â40 dB except the last probe-air interface, which can also be depressed to be â44 dB after minor modification in lengths for the filter. Length tolerance of the proposed probe is determined to be â28â+20μm, which is readily satisfied in fabrication. With the merits of extended-DOF, high-resolution, high-efficiency and easy-fabrication, the proposed probe is promising in endoscopic applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 413, 15 April 2018, Pages 276-282
Journal: Optics Communications - Volume 413, 15 April 2018, Pages 276-282
نویسندگان
Jianrong Qiu, Yi Shen, Ziwei Shangguan, Wen Bao, Shanshan Yang, Peng Li, Zhihua Ding,