Man-seok Seo

Title: Man-seok Seo: Optical Fiber Preform Inventions

Introduction

Man-seok Seo is an inventor associated with Gumi, South Korea, and Samsung Electronics Co., Ltd. His patent work focuses on optical fiber preforms and methods for manufacturing them. He is listed with 2 patents.

Latest Patents

Seo’s listed patents address manufacturing optical fiber preforms and controlling hydroxyl (OH) diffusion within them.

“Apparatus and Method for Manufacturing Optical Fiber Preform by MCVD” describes equipment and a process for modified chemical vapor deposition. The apparatus uses two heating units positioned along the direction of movement: one applies relatively low flame pressure, and the other applies relatively high flame pressure. Selective use of the heating units for deposition and collapsing is intended to reduce the duration and temperature required for collapsing.

“Optical Fiber Preform Having OH Barrier and Manufacturing Method Thereof” describes barrier layers designed to limit OH diffusion from the substrate tube toward the core. A first barrier is placed between the substrate tube and cladding layer, while a second is placed between the cladding and core layers. The patent describes depositing barriers without phosphorus or oxygen to help prevent OH from reaching the core during core deposition, collapsing, or closing.

Career Highlights

Seo’s listed inventions address two manufacturing challenges: controlling heating during optical fiber preform production and limiting OH contamination within the preform. Both approaches focus on process conditions and material-layer design.

Collaborations

Seo’s listed coworkers include Sung-koog Oh and Jin-seong Yang. His company affiliation is Samsung Electronics Co., Ltd.

Conclusion

Man-seok Seo’s two listed patents focus on improving optical fiber preform manufacturing through selective heating and OH-diffusion barriers.