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一 |     团队后续将基于硅光子、光子AI技术，把这套方案拓展至大规模可编程光子集成芯片。         首尔国立大学工学院发布消息：由首尔国立大学电气与计算机工程系Namkyoo Park教授、Sunkyu Yu教授牵头的联合研究团队，联合首尔大学电气与计算机工程系Xianji Piao教授，研发出一款可按需慢光的光子集成芯片。         生成式人工智能与大尺度AI模型飞速发展，算力需求暴涨，传统电子半导体的短板随之凸显，包括功耗高、数据传输速率受限等问题。    

    A man tries a sewing machine during an international industrial expo in Phnom Penh, Cambodia, Aug. 15, 2026. A wide variety of advanced Chinese tech and manufacturing firms showcased cutting-edge machinery, automation, and innovative production solutions at a major international industrial exhibition here in Cambodia's capital. (Photo by Sovannara/Xinhua)A wide variety of advanced Chinese tech and manufacturing firms showcased cutting-edge machinery, automation, and innovative production solutions at a major international industrial exhibition here in Cambodia's capital.
The four-day expo, which runs from Thursday to Sunday, features more than 200 local and international exhibitors.
A significant portion of these participants comprises Chinese companies across four core sectors: machinery and automation, textiles and garments, plastics and rubber, and printing and packaging.
Organized by Yorkers Trade & Marketing Service Co., Ltd. in collaboration with the Ministry of Industry, Science, Technology & Innovation, the expo provided a platform to showcase emerging industrial technologies, foster business connections and support the modernization of Cambodia's manufacturing sector.
According to official ministry data, Cambodia had 3,357 operational factories as of July 2026. These facilities employ over 1.35 million workers, more than 70 percent of whom are women.
Total factory investment in the kingdom reached approximately 28 billion U.S. dollars, a 29 percent increase compared to the same period in 2025. Additionally, industrial production during the first half of 2026 was valued at over 9.8 billion dollars, including roughly 7.3 billion dollars in goods manufactured for export.
Cambodian Minister of Industry, Science, Technology and Innovation Hem Vanndy urged Cambodian enterprises to embrace advanced technologies to boost productivity, improve quality, and sharpen their competitive edge.
"Artificial intelligence, production-line automation, robotics, digital technologies and smart manufacturing are increasingly determining the competitiveness of nations," he said during the expo's opening ceremony on Thursday.
"Cambodia cannot remain outside this transformation," Vanndy said. "We must embrace new technologies to increase productivity, reduce costs, improve product quality and strengthen the competitiveness of our enterprises."
Chim Vinly, the expo's organizing staff member, said the exhibition plays a vital role in introducing innovative manufacturing technologies to Cambodia's garment sector, as attendees can explore a diverse range of advanced machinery designed to elevate production standards.
"Most exhibitors represent the textile and garment industries, with the majority being local and Chinese companies," he told Xinhua on Saturday.
"These advanced manufacturing tools have boosted productivity and modernized local production chains. In particular, they make work faster and more efficient," he added.
Vinly said the annual event plays a vital role in further expanding bilateral trade between China and Cambodia.
"Chinese investment is crucial to boosting Cambodia's economic growth and generating job opportunities for the local workforce," he said.
Bo Seyma, a mechanic at Kosin Sewing Machine Co., Ltd., which supplies Cambodian factories with equipment from the Shanghai-based Shang Gong Group, said the expo is vital for showcasing cutting-edge machinery to the local garment industry.
He said the Kosin company is promoting sewing, embroidery, button, and backstitching machines, along with other equipment, to factories in Cambodia.
"These industrial machines are in high demand, with numerous factories placing purchase orders with our company," he told Xinhua on Saturday.
Seyma said these advanced machines are high-quality and built to last.
"These machines accelerate production efficiency while effortlessly meeting customer demands," he said.
Thong Mengdavid, deputy director at the China-ASEAN Studies Center of the Cambodia University of Technology and Science, said that Cambodia, a country heavily dependent on textiles and garments, has seen its cooperation with China evolve from providing raw materials like fabrics and finished consumer goods toward technological cross-pollination.
This allows local Cambodian plant managers and entrepreneurs to evaluate high-grade machinery directly, he added.
"Integrating China's technology, machinery, and tools into Cambodian factories will address several challenges in the local economy, such as enhancing output per hour, reducing material waste caused by human error, and fostering skill development among the workforce," Mengdavid said.
    People look at sewing machines during an international industrial expo in Phnom Penh, Cambodia, Aug. 15, 2026. A wide variety of advanced Chinese tech and manufacturing firms showcased cutting-edge machinery, automation, and innovative production solutions at a major international industrial exhibition here in Cambodia's capital. (Photo by Sovannara/Xinhua)
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二 | 市场对具备低功耗、超高速处理能力的光计算技术需求持续攀升。但由于光的传播速度固定，实现光计算不可或缺的光缓存与存储功能，长期存在根本性技术难题。

三 |          为解决该难题，这支联合研究团队设计出一种可编程光子集成芯片方案，能够自由调控光信号的传播速度与波形。依托该方案，团队实现了比现有所有方案自由度更高的“慢光”调控。相关研究成果刊发在《Advanced Science》期刊。         可编程耦合谐振腔诱导透明（CRIT）光子集成电路结构示意图：图中展示通过调节光学谐振腔之间的耦合强度，即可灵活调控光路传输路径。         光速固定为何会成为技术瓶颈          光子集成芯片作为新一代技术，依托光信号实现高速、高效信息处理。尤其在数据中心、光通信与光计算系统中，行业不仅需要快速传输光信号，还要求能够同步信号到达时序、按需对光信号做延时处理。业内针对耦合谐振腔诱导透明（CRIT）结构开展大量研究：该结构利用多组光学谐振腔之间的干涉效应，仅让特定频段的光透过，同时降低光信号传播速度。         耦合谐振腔诱导透明（CRIT）是一种光学现象，通过多谐振腔干涉，选择性透过特定频段光并实现光延时。光学谐振腔是一类光子器件，可将特定频率的光束缚、循环传输一段时间，多用于信号延时、滤波与调制。         但传统耦合谐振腔诱导透明（CRIT）器件加工完成后工作特性固定，难以重新配置以适配不同功能。例如，若需要更长延时或切换工作频段，必须重新设计整套光子器件。         光信号延时与频谱转换示意图，图示电路可根据控制条件，对光脉冲实现延时、修改频谱组分。         重构CRIT结构，提升可重构灵活性          传统器件灵活性不足，大幅提升光通信设备、数据中心系统的设计复杂度；新增功能时，设备成本上升、研发周期拉长。

四 | 在AI服务器、下一代数据中心这类需要实时处理海量数据的场景下，该短板已成为光计算技术落地的核心阻碍。         为突破上述局限，研究团队提出全新设计思路：将耦合谐振腔诱导透明系统内的两种光学状态——亮模（bright mode）与暗模（dark mode）统一为单一可控自由度，并引入两组可控环形耦合器。基于该思路，团队建立可编程光子集成芯片全新设计准则，以往加工后参数固化的谐振腔结构，如今可按需重新配置。         团队依托全新CRIT结构实现光路按需延时调控，并证明亮模、暗模之间的干涉效应可作为统一集成设计参数。

五 | 这大幅提升了光子谐振电路的设计自由度，打破传统器件参数固定的约束。         研究团队特别证实：借助双环形耦合器，可从理论层面独立调控通带带宽、波形，以及电路中传输信号的延时、透射特性。这意味着，无论单个谐振腔，还是整套多谐振腔系统，光信号的传播速率与传输特性均可自由重构。         除此之外，团队通过数值仿真验证：芯片运行过程中，可实时动态调整光脉冲传播速度。实验证实，该结构能在不损失信号处理性能的前提下自由控制光信号延时，无需额外专用器件即可完成光频谱转换。

六 |          光脉冲是一段短促光信号，是光通信、光计算系统中承载信息的基础单元。         团队还通过三维电磁仿真验证：该CRIT器件可在氮化硅（Si₃N₄）光子集成芯片平台上实现制备。同时团队分析了制造、运行阶段各类实际干扰因素，包括材料损耗、谐振腔品质因子偏差、背向散射、耦合系数波动、环形耦合器相位误差、热串扰等，证实该结构可在真实光子电路环境下稳定工作。         氮化硅（Si₃N₄）光子集成芯片是低损耗、高稳定性波导平台，广泛用于光信号处理与集成光子器件。热串扰是电路局部工作产生的热量干扰周边元器件，造成器件性能偏移的现象。         单芯片集成多项光学功能          本研究推出一款全新可编程光子集成芯片平台，可实时调控光信号的时域、频域特性，克服传统固定延时光路的局限。该方案可将下一代光互连所需核心功能——信号时序同步、可变延时线、光缓存、频谱转换等，全部集成在单套光子芯片架构内。

七 |          同时，这套设计思路不局限于CRIT体系，可拓展至全部基于谐振腔的光子电路，有望成为下一代灵活调控光传输的光信号处理底层核心技术。         若实现商业化落地，本研究开发的可编程光子集成芯片可像软件定义系统一样，单颗光芯片完成信号速率调控、功能切换等多项任务。既能大幅降低数据中心、AI服务器的功耗，也能提升数据处理效率。         此外，多类信号处理功能单片集成，可推动光通信设备、传感系统小型化，降低硬件成本。

八 | 长期来看，该技术将成为自动驾驶、新一代通信、量子技术等超高速信息处理产业的核心支撑平台。         从理论走向工程落地          论文共同通讯作者、首尔国立大学Namkyoo Park教授表示：“本次研究提出一套全新设计准则，让光子集成芯片内部光路能够按需重构，极大拓宽设计灵活度。团队后续将基于硅光子、光子AI技术，把这套方案拓展至大规模可编程光子集成芯片。”          负责理论框架搭建与数值仿真的共同一作Seungkyun Park博士、博士生Beomjoon Chae补充道：“本次研究让我们意识到，换一种视角解读传统光子谐振物理机制，可为光子集成芯片挖掘全新功能。后续我们将持续推进研究，完成实物器件制备与实验验证。”          *声明：本文系原作者创作。

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