Ls Cable Ltd.

Ls Cable & System Ltd.

Soon-Il Sohn

Tae-Hyun Kim

Ji-Sung Kim

Lae-Hyuk Park

Ji-Sang Park

Joon-Keun Lee

Kyoung-Ro Ko

Kum-Hwan Cha

Jae-Cheol Gwag

Su-Kil Lee

A method for manufacturing a single mode optical fiber with a reduced PMD (Polarization Mode Dispersion), by drawing an optical fiber preform composed of a core and a clad surrounding the core, includes (a) heating the optical fiber preform to a high temperature using a furnace, and drawing an optical fiber from an outlet of the furnace at a linear velocity (V) of 500 mpm or above by means of neck-down drawing; and (b) impressing a spin on the optical fiber by means of a spin impressing device provided on a drawing path of the optical fiber, wherein a maximum spatial frequency of spin (y) impressed on the optical fiber satisfies the following equations andt=(0.21&#xd7;CladOval)+(0.04&#xd7;CoreOval)+(0.17&#xd7;ECC), where y is a maximum spatial frequency of spin [turns/m], Vis a drawing velocity [mpm], CladOval is a clad ovality [%], CoreOval is a core ovality [%], and ECC is an eccentricity [&#x3bc;m].

Method for manufacturing single mode optical fiber having low polarization mode dispersion

Growing community of inventors

Gwangmyeong-si, South Korea

Soon-Il Sohn