کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5449704 | 1512536 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Free-space-to-waveguide demultiplexer featuring zero-contrast gratings
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی مواد
مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
We present here a method to achieve an optical demultiplexer working in the visible range to achieve either a polarization beamsplitter (PBS) or the wavelength-division multiplexer (WDM), which is based on the integration of different periodic gratings using the suspended zero contrast grating (ZCG) structure. The proposed demultiplexer comprises two independent ZCG HfO2 filters, which are very close to each other so that they can be illuminated and measured at the same time. By combining two independent HfO2 ZCG filters with selectable functionalities in parallel and extending the waveguides on both sides, a PBS device or WDM device can be achieved. The finite difference time-domain (FDTD) method is used to simulate the coupling properties of the ZCG filters. The simulation results show that the proposed PBS device can effectively direct different polarized light with a wavelength of 650Â nm into separate waveguides. The WDM device can also separate incoming 550Â nm and 650Â nm light beams into separate waveguides. The fabricated devices are characterized by the optical microscope and the atomic force microscope (AFM).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optics Communications - Volume 387, 15 March 2017, Pages 89-94
Journal: Optics Communications - Volume 387, 15 March 2017, Pages 89-94
نویسندگان
Yin Xu, Xumin Gao, Dan Bai, Guixia Zhu, Jialei Yuan, Hongbo Zhu, Yongjin Wang,