光学学报, 2021, 41 (4): 0413001, 网络出版: 2021-02-26
基于纳米线波导和一维光子晶体纳米梁腔的模分-波分混合解复用器 下载: 1156次
Hybrid Demultiplexer for Mode-Wavelength Division Based on Nanowire Waveguides and One-Dimensional Photonic Crystal Nanobeam Cavity
集成光学 光子晶体 纳米梁腔 纳米线波导 时域有限差分法 混合解复用器 integrated optics photonic crystals nanobeam cavity nanowire waveguides finite-difference time-domain method hybrid demultiplexer
摘要
设计了一种基于纳米线波导和一维光子晶体纳米梁腔的模分-波分混合解复用器,该器件由波分解复用(WDM)和模分解复用(MDM)两部分组成。其中,波分解复用部分由两个一维光子晶体纳米梁腔构成,模分解复用部分采用硅基纳米线波导结构。利用三维时域有限差分法,计算分析了该混合解复用器的性能参数。结果表明,该器件可以在波长1570.0 nm和1573.2 nm处实现基模(TE0)和一阶模(TE1)四个信道的解复用功能,插入损耗小于0.37 dB,信道串扰小于-18.4 dB,自由光谱范围可以达到400 nm。该混合解复用器可以应用于模分-粗波分复用系统中。
Abstract
A hybrid demultiplexer for mode-wavelength division based on nanowire waveguides and one-dimensional photonic crystal nanobeam cavity is proposed. The device consists of a wavelength division multiplexer (WDM) and a mode division multiplexer (MDM), in which the WDM is composed of two one-dimensional photonic crystal nanobeam cavities, however the MDM adopts a silicon-based nanowire waveguide structure. The parameters of the hybrid demultiplexer are calculated using the three-dimensional finite-difference time-domain (3D-FDTD) method. The results show that the four channels of the fundamental mode (TE0) and the first-order mode (TE1) at wavelengths of 1570.0 nm and 1573.2 nm can be demultiplexed by this device. The insertion loss and the channel crosstalk are smaller than 0.37 dB and -18.4 dB, respectively. The free spectral range can reach 400 nm. The proposed hybrid demultiplexer can be applied to a mode-division and coarse-wavelength-division multiplexing system.
潘万乐, 陈鹤鸣, 庄煜阳, 胡宇宸. 基于纳米线波导和一维光子晶体纳米梁腔的模分-波分混合解复用器[J]. 光学学报, 2021, 41(4): 0413001. Wanle Pan, Heming Chen, Yuyang Zhuang, Yuchen Hu. Hybrid Demultiplexer for Mode-Wavelength Division Based on Nanowire Waveguides and One-Dimensional Photonic Crystal Nanobeam Cavity[J]. Acta Optica Sinica, 2021, 41(4): 0413001.