Low-power and wide-band 1 × 8 silica waveguide optical switch

Wang, Manzhuo; Yue, Jianbo; Yao, Zhentao; Liu, Tingyu; Sun, Xiaoqiang; Wu, Yuanda; Zhang, Daming

doi:10.1016/j.optlastec.2023.110380

Optics & Laser Technology

2024

DOI: 10.1016/j.optlastec.2023.110380

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Low-power and wide-band 1 × 8 silica waveguide optical switch

Manzhuo Wang,

Jianbo Yue,

Zhentao Yao

et al.

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Cited by 6 publications

References 38 publications

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1 × N All‐Logic Optical Switch Based on Polymer Platform Using Multimode Interferometer

Zeng,

Zhang,

Wang

et al. 2024

Advanced Photonics Research

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The compact and broadband optical switch with a large port count is demanded with the increasing communication capacity. In this article, a universal method for modeling the 1 × N switch using multimode interferometer (MMI) through transmission matrixes is proposed. Herein, the reasons for the narrowing of the operating bandwidth switch are analyzed. As a proof of concept, a wide bandwidth 1 × 4 switch, which has an insertion loss lower than 23.7 dB, and a cross talk better than −10 dB at 1550 nm are simulated, designed, and fabricated. The cross talk throughout the C band is lower than −8.5 dB. According to the experimental result, the 1 × 4 switch with four‐equal‐length modulating arms shows a 32 nm bandwidth for −10 dB cross talk which is 13 times larger than traditional switch. The switch realizes a multi‐port logic optical switch by modulation. The 1 × N switch based on the generalized Mach–Zehnder interferometer (GMZI) structure reduce the footprint significantly compared with the 1 × N switch consisting of a 1 × 2 switch cascade. It is believed that 1 × N switch based on GMZI structures is a promising solution to increase integration density.

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1 × N All‐Logic Optical Switch Based on Polymer Platform Using Multimode Interferometer

Zeng,

Zhang,

Wang

et al. 2024

Advanced Photonics Research

View full text Add to dashboard Cite

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Low-loss silica waveguide 1×8 thermo-optic switch based on large-scale multimode interference couplers

Yue,

Wang,

Zou

et al. 2024

Optics Communications

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Hybrid neural network-powered inverse design for implementing a highly efficient multimode interference coupler

Luo,

Wang,

Lee

2024

Opt. Express

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Multimode interference couplers have been increasingly utilized in a variety of photonic scenarios. However, manually designing a coupler with sufficiently high coupling efficiency demands substantial time and effort, without guaranteeing the required performance. In this study, we present a machine learning-driven methodology that relies on a hybrid neural network and the Nelder-Mead algorithm to inversely design an efficient 1 × 4 coupler. The maximum output power values and corresponding coupler parameters are automatically and swiftly deduced through multiple iterations. The optimized average coupling efficiency, insertion loss, and power imbalance are −6.05 dB, 0.033 dB, and 0.039 dB, respectively, over the telecommunication spectral band spanning 1530–1630 nm. In comparison to conventional design methods, our approach significantly diminishes the insertion loss by approximately 0.04–0.1 dB. Our scheme shows promise in propelling and simplifying the designs of diverse types of couplers.

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Low-power and wide-band 1 × 8 silica waveguide optical switch

Cited by 6 publications

References 38 publications

1 × N All‐Logic Optical Switch Based on Polymer Platform Using Multimode Interferometer

1 × N All‐Logic Optical Switch Based on Polymer Platform Using Multimode Interferometer

Low-loss silica waveguide 1×8 thermo-optic switch based on large-scale multimode interference couplers

Hybrid neural network-powered inverse design for implementing a highly efficient multimode interference coupler

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