20 November 2012 Emission and optical properties of Si slot ErxY2-xSiO5 waveguides
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Strong optical confinement to the low-index slot, such as ErxY2-xSiO5, is expected for guided TM mode. The confinement effect leads to modification of the optical mode density, resulting in the enhancement of radiative transition. We have fabricated slab Si-slot waveguides with Er2SiO5 slot layers in order to demonstrate the dependence of radiative emission on the guided waveguide modes. The PL fine structure particular to Er2SiO5 crystal has been observed through the waveguide structure. We confirmed the enhancement of the TM mode edge emission, and the intensity was about two times higher than that of TE mode.
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Hideo Isshiki, Hideo Isshiki, Zul Izwan Bin Zulkefli, Zul Izwan Bin Zulkefli, Takayuki Nakajima, Takayuki Nakajima, Takuya Sato, Takuya Sato, Tadamasa Kimura, Tadamasa Kimura, "Emission and optical properties of Si slot ErxY2-xSiO5 waveguides", Proc. SPIE 8564, Nanophotonics and Micro/Nano Optics, 856404 (20 November 2012); doi: 10.1117/12.2001322; https://doi.org/10.1117/12.2001322

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