Hongtao Lin

Geometrical-optics resonator photonics

Chunlei Sun, Kangjian Bao, Boshu Sun, Bo Tang et autres

Conventional waveguide optical resonators face inherent limitations of low damage thresholds, limited coupling tunability, and stochastic resonance. To overcome these, we introduce a geometrical-optics resonator (GOR) framework, emulating free-space reflection and thin-film coupling on-chip. Using ultra-wide waveguides with total internal reflection (TIR) …

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Synergistic Piezophototronic and Bandgap Engineering in a Flexible MoTe 2 /In 2 Se 3 Heterojunction Photodetector

Qingyan Deng, Yuting Ye, Jialing Jian, Jianghong Wu et autres

ABSTRACT Two‐dimensional materials provide a versatile platform for flexible optoelectronics. However, previous strain‐engineered flexible photodetectors have generally exhibited a narrow spectral range, with most studies focusing solely on the visible range and lacking broadband response capability. Here, we present a flexible photodetector …

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Tailoring Capping Layers for Phase‐Change Material Photonics

Jiaxin Zhang, 李振阳 Li Zhenyang, Hao Sun, Jialing Jian et autres

ABSTRACT Spatial‐laser programming of low‐loss Sb 2 Se 3 phase‐change materials (PCMs) offers a flexible route toward pixelated and large‐scale nonvolatile reconfigurability in photonic devices. However, complex laser‐induced dynamics often limit precision control and reproducibility. We systematically investigate how encapsulation architectures, a …

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Integrated optical routing for optogenetic probes: principles, rigid implementations, and transition to flexible platforms

Zequn Chen, Yiheng Tang, Shouyan Zhang, Xiaojing Li et autres

Integrated photonic waveguide routing is emerging as a key direction for next-generation optogenetic probes, as lithographically defined waveguide networks enable scalable, independently addressable light delivery in the presence of strong scattering and stringent thermal budgets in visible-light neural interfaces. Motivated by reframing …

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P‐7.10: Effect of Amorphous Silicon TFT Gate Insulator Properties on Vth Stability

Dan Liu, Zhonghao Huang, Xu Wu, Yanqiu Li et autres

Vth and its stability (Vth shift) are important performance parameters of TFTs. The effects of deposition power on the deposition rate, refractive index, optical bandgap, and infrared spectrum of SiNx gate insulator are investigated, clarifying the correlations among these parameters. Based on …

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Broadband opto-thermal camouflage and infrared encrypted communication via inverse design

Q Chen, C.-J. Li, Zhuning Wang, Zezhao Ju et autres

Multispectral detection technologies spanning optical and thermal bands pose a severe threat to military camouflage while simultaneously unlocking new opportunities for covert communication. However, smart materials capable of both countering these threats and exploiting these bands for communication are still lacking. Here, …

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Reconfigurable in-Sensor Image Enhancement Based on Tunable Band Alignment of In 2 Se 3 /PdSe 2 Heterojunction

Yuting Ye, Jianmin Wu, Yin Zhang⋆, H F Ma et autres

In-sensor computing has emerged as a promising paradigm to overcome power consumption and latency bottlenecks in vision systems. Here, we demonstrate a reconfigurable in-sensor image enhancement strategy based on an In 2 Se 3 /PdSe 2 ferroelectric heterojunction. The photodetector exhibits a …

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Femto-joule threshold reconfigurable all-optical nonlinear activators for picosecond pulsed optical neural networks

Ruizhe Liu, Zijia Wang, Chuyu Zhong, Yan Chen et autres

Abstract Achieving optical computing with thousands of tera-operations per second per watt per square millimeter (TOPs/W/mm 2 ) is the key to surpassing electrical computing. This realization requires a breakthrough in the design of a new optical computing architecture and nonlinear activation …

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Ionic Driven Waveguide Integrated Memristor

Hongtao Lin, Kunhao Lei, Zijia Wang, Kai Xu et autres

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Enhanced Negative Thermo-Optic Coefficient in Sputtered Versus Sol-Gel TiO 2 Waveguides

Yiheng Tang, Zequn Chen, Yingchun Wu, Maoliang Wei et autres

Titanium dioxide (TiO2) has garnered significant attention in integrated photonics due to its unique negative thermo-optic coefficient (TOC), a property essential for developing athermal devices and efficient thermo-optic switches on flexible platforms. In this paper, we compare sol-gel and magnetron-sputtered TiO2waveguides, highlighting …

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Luminescent behavior of pyrene-based dipolar molecules: the mechanism of molecular conformational dynamic regulation and applications

Fei Meng, Wen-Xuan Zhao, Zeng-Min Xue, Wei-Jie Wu et autres

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Photonic Interfaces: an Innovative Wearable Sensing Solution for Continuous Monitoring of Human Motion and Physiological Signals (Small Methods 12/2025)

Yingchun Wu, Kangjian Bao, Junxuan Liang, Zongxi Li et autres

Photonic Sensors In article number 2500727, Zhang, Li, and co-workers propose a fully packaged wearable integrated photonics sensing solution featuring a high-Q necklace-shaped microring resonator and a fiber array with a grating coupler for plug-and-play functionality. This system, enhanced with artificial neural …

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