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Single-mode, single-polarization and dispersion-flattened waveguides based on silicon carbide and diamond
Optics & Laser Technology ( IF 4.6 ) Pub Date : 2021-12-02 , DOI: 10.1016/j.optlastec.2021.107692
Yushuo Guo 1, 2 , Yuhao Guo 1, 2 , Zeinab Jafari 1, 2, 3 , Lijuan Xu 1, 2, 4 , Lin Zhang 1, 2
Affiliation  

Fundamental properties of an optical waveguide are mainly related to its guided modes and associated loss, dispersion, polarization and nonlinearity. Single-mode and single-polarization waveguiding has long been of interest, i.e., so-called truly single mode. We propose SiC- and diamond-based waveguides, which are truly single-mode and simultaneously dispersion-flattened. This is preferred for broadband nonlinear applications, such as octave-spanning supercontinuum and frequency comb generation. An ultra-low and flat dispersion profile with four zero-dispersion wavelengths (ZDWs) can be obtained over an octave-spanning bandwidth from 1.8 to 3.6 μm. Meanwhile, only TE00 mode is supported in the proposed waveguide over the low-dispersion bandwidth. Scattering loss of the waveguide is greatly reduced by 8.6 times, compared to a standard strip waveguide. Fabrication of the proposed waveguide is easier than previous dispersion-tailored waveguides, without dry etching SiC and diamond. It is expected that the proposed waveguides can find applications in nonlinear photonics, optomechanics and quantum optics.



中文翻译:

基于碳化硅和金刚石的单模、单极化和色散平坦波导

光波导的基本特性主要与其导模和相关的损耗、色散、偏振和非线性有关。长期以来,单模和单极化波导一直受到关注,即所谓的真正单模。我们提出了基于 SiC 和金刚石的波导,它们是真正的单模,同时色散平坦。这是宽带非线性应用的首选,例如跨倍频程超连续谱和频率梳生成。可以在 1.8 到 3.6 μm 的倍频程跨度带宽上获得具有四个零色散波长 (ZDW) 的超低且平坦的色散曲线。同时,只有TE 00模式在低色散带宽上的建议波导中得到支持。与标准条形波导相比,波导的散射损耗大大降低了 8.6 倍。所提出的波导的制造比以前的色散定制波导更容易,无需干蚀刻 SiC 和金刚石。预计所提出的波导可以在非线性光子学、光机械和量子光学中找到应用。

更新日期:2021-12-02
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