Seoul National University of Science and Technology Professor Lee Ju-han delivers keynote at CLEO-PR 2026

Professor Lee Ju-han from the University of Seoul's School of Electrical, Electronic, and Computer Engineering delivered a keynote address at the prestigious 17th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2026) held in Beijing from August 2nd to 6th. This conference is a premier gathering for laser and electro-optics technology in the Asia-Pacific region, attracting over 1,000 researchers globally.

Professor Lee's lecture, titled 'Development of High Power Fiber Laser Components in South Korea,' showcased significant advancements made by his research team. He particularly detailed the 'chemical etching-based cladding light removal device fabrication technology' developed at the University of Seoul's Laser and Optoelectronics Research Lab and subsequently commercialized through the spin-off venture, ChromaNet Inc.

This innovative technology, which has earned patents in both South Korea and the United States, addresses critical challenges in high-power fiber lasers. The core of the technique lies in precisely controlling the gradual reduction in depth and periodicity within the fiber etching sections. This meticulous process minimizes back-reflection and ensures a uniform temperature distribution along the device's length, crucial for stable and efficient operation.

"This keynote lecture served as an opportunity to inform the world that the performance level of cladding light removal devices, key components of high-power fiber lasers developed through the unique technology of the University of Seoul research team, is comparable to the products of the world's top companies in Germany and the United States," Professor Lee stated. He is currently working with international companies to expand overseas exports of ChromaNet's products.

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This keynote lecture served as an opportunity to inform the world that the performance level of cladding light removal devices, key components of high-power fiber lasers developed through the unique technology of the University of Seoul research team, is comparable to the products of the world's top companies in Germany and the United States.