Penghui Xia

Silicon Photonic Multipurpose Circuit Driven by Integrated Electro‐Optic Frequency Comb Source

Qiang Zhang, Xicheng Zhang, Qikai Huang, Zhou Sc et autres

ABSTRACT The growing scale and complexity of photonic integrated circuits (PICs) enable the design methodology of photonics chips to transit from application‐specific toward multipurpose architectures. While optical frequency comb (OFC) sources have been utilized by many application‐specific PICs to add new functionalities …

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Lattice-Filter-Based LAN-WDM Silicon Photonic Transceiver System for DCI LR8 Application

Xiaojun Ying, Penghui Xia, Ruiqi Luo, Huaqing Jiang et autres

This work first establishes an 8-channel four pulse amplitude modulation (PAM-4) intensity modulation direct detection (IM-DD) optoelectronic transceiver system, with cascaded silicon Mach-Zehnder interferometer (MZI) lattice-filter technology, for high-speed and long reach (LR) (over 10 km) transmission scenario of modern data center …

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Silicon 3.2/6.4 Tb/s micro-ring modulator array chip with wavelength multiplexing and port multiplexing for high-capacity optical transmission

Gangqiang Zhou, Chi Lu, Penghui Xia, Liangjun Lu et autres

Beyond 1.6-Tb/s Silicon LAN-WDM Transmitter for High-Energy-Efficiency Transmission

Hui Yu, Jianyi Yang, Qiang Zhang, Penghui Xia

We demonstrate an all-silicon local area network wavelength division multiplexing (LAN-WDM) transmitter with capacities of 1.6 Tbps and beyond, utilizing 8 traveling wave Mach-Zehnder modulators (TW-MZMs) with 3 dB EO bandwidths of 60 GHz and a lattice-filer-based Gaussian-like-passband 8×1 multiplexer. By using …

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Ultrahigh‐Water‐Content yet Robust Hydrogels Enabled by Bioinspired Laminated Membranous Network

Shunxi Wen, Penghui Xia, Chaoyi Peng, Wanqi Zhang et autres

Hydrogels, water-rich polymer networks, are important materials for application as structural biomaterials. More water-rich networks are typically less mechanically robust, which is manifested as softness and low stress to fracture. Unusually, jellyfish mesoglea exhibits paradoxical combination of high stiffness and strength with …

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Silicon 6.4 Tb/s micro-ring modulator array chip with wavelength multiplexed and port multiplexed for optical interconnect

Gangqiang Zhou, Chi Lu, Penghui Xia, Liangjun Lu et autres

We demonstrate a silicon micro-ring modulator array chip with eight-wavelength multiplexed and four-port multiplexed. All micro-ring modulators can support 100 Gb/s OOK /PAM4 modulation and 200 Gb/s PAM4 modulation. The total transmit data rate can be 6.4 Tb/s.

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All-optically linearized silicon modulator with ultrahigh SFDR of 131 dB · Hz 6/7

Qiang Zhang, Qikai Huang, Penghui Xia, Xingyi Jiang et autres

Integrated high-linearity modulators are crucial for high dynamic-range microwave photonic (MWP) systems. Conventional linearization schemes usually involve the fine tuning of radio-frequency (RF) power distribution, which is rather inconvenient for practical applications and can hardly be implemented on the integrated photonics chip. …

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A High-Order Double Network Hydrogel

Penghui Xia, Wanqi Zhang, Chaoyi Peng, Hanfeng Yin et autres

Natural hydrogels, such as cartilage, have a multiscale hierarchical structure composed of multiple modulus-contrasting building blocks, bringing about their extraordinary mechanical properties. Conventional tough engineering hydrogels, such as Double Network (DN) hydrogel, lack cartilage’s high-order aggregated structure across multiple length scales, although …

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Control nucleation for strong and tough crystalline hydrogels with high water content

Limei Huang, Hao Li, Shunxi Wen, Penghui Xia et autres

Hydrogels, provided that they integrate strength and toughness at desired high content of water, promise in load-bearing tissues such as articular cartilage, ligaments, tendons. Many developed strategies impart hydrogels with some mechanical properties akin to natural tissues, but compromise water content. Herein, …

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Axial Impact Analysis of Torsion Impactor Based on Water Strike Effect

Yong Chen, Penghui Xia, Xin Liu

The stick-slip vibration phenomenon that occurs during the drilling process not only reduces the drilling speed, but also affects the performance of the drill pipe and the service life of the drill bit. In response to the problem of stick-slip vibration, a …

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Ultra-Broadband Optical Filter Based on Step-Chirped Multimode Waveguide Bragg Grating

Nannan Ning, Zhujun Wei, Qikai Huang, Penghui Xia et autres

An ultra-broadband optical filter based on step-chirped multimode waveguide Bragg grating (SCMWBG) with low insertion loss, high sidelobe suppression ratio (SLSR), compact size and relaxed fabrication accuracy is demonstrated on SOI platform. The grating length of SCMWBG is divided into grating segments …

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Narrow-band Add-Drop Filters Based on Silicon Nitride Multimode Waveguide Bragg Grating

Nannan Ning, Qikai Huang, Qiang Zhang, Zhujun Wei et autres

A high-performance silicon nitride based narrow-band multimode waveguide Bragg grating (NBMWBG) add-drop optical filter with high sidelobe suppression ratio (SLSR), low insertion loss and low temperature sensitivity is demonstrated. The complementary lateral-misalignment modulation apodization is introduced to improve the performance of the …

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