Simulation Study of Low Coupling Coefficient Cladding-Modulated Bragg Grating (Invited)

Peng Chen; Chao Chen; Jingjing Sun; Jianwei Zhang; Zhaohui Liu; Yinli Zhou; Yijiang Duan; Hao Wu; Zhuo Zhang; Tianjiao Liu; Yongqiang Ning; Lijun Wang

doi:10.3788/AOS251199

Acta Optica Sinica, Volume. 45, Issue 17, 1720022(2025)

Simulation Study of Low Coupling Coefficient Cladding-Modulated Bragg Grating (Invited)

Peng Chen^1,2, Chao Chen^1,2、*, Jingjing Sun^1,2, Jianwei Zhang¹, Zhaohui Liu^1,2, Yinli Zhou¹, Yijiang Duan^1,2, Hao Wu¹, Zhuo Zhang¹, Tianjiao Liu¹, Yongqiang Ning^1、**, and Lijun Wang¹

Author Affiliations

¹State Key Laboratory of Luminescence Science and Technology, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, Jilin , China

²School of Optoelectronics, University of Chinese Academy of Sciences, Beijing 101400, China

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Figures & Tables(7)

Fig. 1. Structure diagram of cladding-modulated Bragg grating. (a) 3D view; (b) top view; (c) cross-sectional view

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Fig. 2. Grating waveguide dispersion curves and optical field transmission state. (a) Dispersion curves; (b) optical field transmission state

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$Variations of effective refractive index, coupling coefficient, and electric field intensity distributions under different Wgap and duty cycles. (a) Effective refractive index; (b) coupling coefficient; (c) electric field intensity distribution of grating cross-section when Wgap is 600 nm; (d) electric field intensity distribution of grating cross-section when Wgap is 1000 nm$

Fig. 3. Variations of effective refractive index, coupling coefficient, and electric field intensity distributions under different $W_{g a p}$ and duty cycles. (a) Effective refractive index; (b) coupling coefficient; (c) electric field intensity distribution of grating cross-section when $W_{g a p}$ is 600 nm; (d) electric field intensity distribution of grating cross-section when $W_{g a p}$ is 1000 nm

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Fig. 4. Reflection bandwidth and reflectivity with different grating $W_{g a p}$ and duty cycle. (a) Reflection bandwidth; (b) reflectivity

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Fig. 5. Grating reflection spectra and variations of wavelength and reflectivity under different $W_{g a p}$ values. (a) Reflection spectra; (b) variations of wavelength and reflectivity

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Fig. 6. Grating reflection spectra and variations of wavelength and reflectivity under different duty cycles. (a) Reflection spectra; (b) variations of wavelength and reflectivity

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Fig. 7. Variations of reflection bandwidth, reflectivity, and reflection spectra with different grating lengths. (a) Variation of reflection bandwidth and reflectivity; (b) variation of reflection spectra

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Peng Chen, Chao Chen, Jingjing Sun, Jianwei Zhang, Zhaohui Liu, Yinli Zhou, Yijiang Duan, Hao Wu, Zhuo Zhang, Tianjiao Liu, Yongqiang Ning, Lijun Wang. Simulation Study of Low Coupling Coefficient Cladding-Modulated Bragg Grating (Invited)[J]. Acta Optica Sinica, 2025, 45(17): 1720022

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Paper Information

Category: Optics in Computing

Received: Jun. 3, 2025

Accepted: Jul. 22, 2025

Published Online: Sep. 3, 2025

The Author Email: Chao Chen (chenc@ciomp.ac.cn), Yongqiang Ning (ningyq@ciomp.ac.cn)

DOI:10.3788/AOS251199

CSTR:32393.14.AOS251199

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology