Dual-Core Mode Converter Based on Directional Couplers

Xuelian Yu; Shanshan Zuo; Pengfei Wang; Tao Shen

doi:10.3788/AOS202242.1323004

Acta Optica Sinica, Volume. 42, Issue 13, 1323004(2022)

Dual-Core Mode Converter Based on Directional Couplers

Xuelian Yu^1,2、*, Shanshan Zuo², Pengfei Wang¹, and Tao Shen²

¹Key Laboratory of In-Fiber Integrated Optics of Ministry of Education of China, College of Physics and Optoelectronic Engineering, Harbin Engineering University, Harbin 150001, Heilongjiang , China

²Heilongjiang Province Key Laboratory of Quantum Control, School of Measurement and Communication Engineering, Harbin University of Science and Technology, Harbin 150080, Heilongjiang , China

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Fig. 1. Cross section of dual-core mode converter

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Fig. 2. Top view of dual-core mode converter

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Fig. 3. Mode field distribution of dual-core mode converter

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Fig. 4. Conversion rate of mode converter

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Fig. 5. Change of coupling loss

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Fig. 6. Extinction ratio and insertion loss varying with wavelength

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Fig. 7. Influence of S-bend offset on conversion rate

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Fig. 8. Effect of core spacing on conversion rate

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Fig. 9. Effect of S-bend on conversion rate

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Table 1. Structural parameters of dual-core mode converter
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Table 1. Structural parameters of dual-core mode converter
Parameter R /μm R₀ /μm R₁ /μm L₁ /μm L₂ /μm L₃ /μm $n_{c o r e}$ $n_{c l a d d i n g}$
Value 62.50 3.00 4.95 1000 520 1000 1.4800 1.4702

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Xuelian Yu, Shanshan Zuo, Pengfei Wang, Tao Shen. Dual-Core Mode Converter Based on Directional Couplers[J]. Acta Optica Sinica, 2022, 42(13): 1323004

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