Bragg gratings composed of hollow hybrid plasmonic waveguides with low loss

Tiannuo Zhou; Xinze Yang; Mulin Chen; Huichao Cheng; Yanling Guo; Yuxin Xie; Sicheng Zhang; Ji Xu; Zhongcheng Liang

doi:10.1117/12.2573066

10 October 2020 Bragg gratings composed of hollow hybrid plasmonic waveguides with low loss

Tiannuo Zhou, Xinze Yang, Mulin Chen, Huichao Cheng, Yanling Guo, Yuxin Xie, Sicheng Zhang, Ji Xu, Zhongcheng Liang

Proceedings Volume 11547, Optoelectronic Devices and Integration IX; 1154710 (2020) https://doi.org/10.1117/12.2573066
Event: SPIE/COS Photonics Asia, 2020, Online Only

Conference Poster

Abstract

Hybrid plasmonic waveguides (HPWs) have attracted wide attention in recent years, because it makes a better compromise between the low loss of dielectric waveguide and the constraint capability of surface plasmonic waveguide. In this work, a hollow HPW with slat metal layer is analyzed to further reduce the loss and maintain constraint capability, then Bragg grating is designed and studied. By changing the waveguide width to further analyze the mode. The results show that normalized mode area is around 0.01, and propagation length (L_p) is up to 3500 μm, for TM polarized mode at operating wavelength of 1550 nm. For TE mode, L_p keeps millimeter level. Based on hollow HPW, Bragg grating is constructed by alternating the waveguides with different widths. Since the effective index of waveguide mode is quite sensitive to the change of the width and the trends of TM and TE modes are different from each other, Bragg gratings with different filtering characteristics and polarization properties can be designed by choosing combinations with different width. Simulations prove the validity of the design. HPW and Bragg structure proposed in this work would provide a reference for designing related photonic devices and have the potential applied value in the field of optical communication and integrated optics.

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Citation Download Citation

Tiannuo Zhou, Xinze Yang, Mulin Chen, Huichao Cheng, Yanling Guo, Yuxin Xie, Sicheng Zhang, Ji Xu, and Zhongcheng Liang "Bragg gratings composed of hollow hybrid plasmonic waveguides with low loss", Proc. SPIE 11547, Optoelectronic Devices and Integration IX, 1154710 (10 October 2020); https://doi.org/10.1117/12.2573066

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