- Tytuł:
- Simulating the effects of refractive index difference on the coupling efficiency of periodically segmented waveguide mode converter
- Autorzy:
-
Zheng, Yu
He, Hao
Jiang, Lianqiong
Duan, Ji'an - Powiązania:
- https://bibliotekanauki.pl/articles/2033880.pdf
- Data publikacji:
- 2021
- Wydawca:
- Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
- Tematy:
-
coupling efficiency
silica waveguide
planar lightwave circuit
micro-optical waveguide
nano-optical waveguide - Opis:
- Efficient coupling of micro/nano-optical waveguides with single-mode fibers is the premise for the efficient operation of the integrated photonic chip, which directly determines its optical performance. In this paper, the design principles of periodically segmented waveguide (PSW) structure used for high-efficiency fiber-chip coupling are proposed, and the effects of refractive index difference Δ on coupling efficiency and structural parameters are studied by simulation. It is found that as the Δ of the PSW increases, the period of the PSW tends to be smaller, and the coupling efficiency decreases continuously, reduced by around 0.673 dB in the range of Δ = 3% to Δ = 7%. Through the analysis of PSW optical mechanisms, it demonstrates that the main reason for the decrease of coupling efficiency is that the transmission loss of the tapered section increases sharply with the increase of Δ. High-Δ PSW is difficult to apply to highly integrated silica optical chips due to the unignorably insertion loss.
- Źródło:
-
Optica Applicata; 2021, 51, 4; 565-577
0078-5466
1899-7015 - Pojawia się w:
- Optica Applicata
- Dostawca treści:
- Biblioteka Nauki
Artykuł