Sung-koog Oh

Title: Sung-koog Oh: Optical Fiber Preform Innovations

Introduction

Sung-koog Oh is an inventor associated with Gumi, South Korea, and Samsung Electronics Co., Ltd. His patent work focuses on optical fiber preforms and manufacturing processes designed to improve production efficiency and limit hydroxyl (OH) diffusion. His listed portfolio includes 2 patents.

Latest Patents

**Apparatus and Method for Manufacturing Optical Fiber Preform by MCVD.** This invention describes an apparatus and method for producing an optical fiber preform using modified chemical vapor deposition (MCVD). The apparatus uses two heating units positioned along the direction of movement: a front unit applies relatively low flame pressure, while a rear unit applies relatively high flame pressure. The units can be selected for deposition and collapsing, helping reduce the time and temperature required for collapsing.

**Optical Fiber Preform Having OH Barrier and Manufacturing Method Thereof.** This invention adds barrier layers made from materials with low OH diffusion coefficients to an optical fiber preform. One barrier is placed between the substrate tube and cladding layer, and another between the cladding and core layers. These barriers are designed to limit OH diffusion from the substrate tube toward the core during deposition, collapsing, and closing processes.

Career Highlights

Oh’s listed inventions address two important manufacturing concerns: controlling the heating conditions used to form optical fiber preforms and reducing OH contamination within their layered structure. Together, these approaches aim to support more efficient production and protect the optical properties of the fiber.

Collaborations

Oh’s listed coworkers include Man-seok Seo and Jin-seong Yang. His work is associated with Samsung Electronics Co., Ltd.

Conclusion

Sung-koog Oh’s patents focus on practical improvements to optical fiber preform manufacturing, combining controlled heating methods with barriers designed to limit OH diffusion.