Samsung Electronics Co., Ltd.

Yun-Geun Jang

Ju-Chang Han

Sung-Koog Oh

Sung-Wook Choi

Jeong-Sik Cho

Mun-Hyun Do

Jin-Seong Yang

Sung-Jin Kim

Jae-ho Lee

Jin-Han Kim

Sang-Ho Cha

Ki-Moon Kwak

An optical fiber for use in a metro network is provided. The optical fiber has a loss of 0.25 dB/km or less in the C-band and the L-band, a zero dispersion wavelength between 1560 nm and 1560 nm, and a dispersion slope of at least 0.074 ps/nm/km at a wavelength of 1550 nm.

Optical fiber for metro network

A method for reducing the hydrogen sensitivity of an optical fiber is disclosed. The method includes a deuterium treatment step of exposing an optical fiber to a gas mixture including a deuterium, so that the optical fiber makes a contact with the deuterium, and a degassing step of degassing the optical fiber treated with the deuterium under a negative pressure condition.

Method for reducing hydrogen sensitivity of optical fiber

An optical fiber for long-distance optical communication networks has a zero dispersion wavelength value in the range of 1560 to 1570 nm and a dispersion gradient value, at a wavelength band of 1550 nm, in the range of 0.055 to 0.075 ps/nm/km.

Optical fiber for long-distance optical communication network

An optical fiber for an optical network is disclosed. The optical fiber includes a core having a core region having a first refractive index N, and a refractive index depressed region surrounding the core region and having a second refractive index Nthat is lower than the first refractive index. A clad surrounds the core and having a third refractive index N. The optical fiber has a zero-dispersion wavelength that is not less than 1555 nm and positioned in a wavelength range which does not exceed L-band. The optical fiber has negative dispersion values in C-band and positive dispersion values in L-band.

Disclosed is a wide-band dispersion controlled optical fiber. The optical fiber enables the use of optical signals in various wavelength regions in a wavelength division multiplexing mode communication network by controlling the position of the zero dispersion wavelength, and enables long distance transmission by controlling dispersion slope and bending loss. Furthermore, there is an advantage in that the optical fiber enables not only short distance transmission but also middle/long distance transmission using a single type of optical fiber because the optical fiber is controlled to have negative dispersion values in the O-band wavelength region and positive dispersion values with small deviations in the C-band and L-band wavelength regions.

Wide-band dispersion controlled optical fiber

Disclosed is an optical fiber comprising a center core which forms a passageway for transmitting optical signals and has a refractive index N, and a cladding which encloses the center core and has a refractive index N. The optical fiber further comprises an upper core, which has a distribution of refractive indices increased starting from a refractive index N(&#x3e;N) at its outer circumference to the refractive index Nat its internal circumference, and a minutely depressed refractive index region, which is interposed between said upper core and cladding and has a refractive index N. The refractive index Nis lower than the refractive index N.

Dispersion-controlled optical fiber

An optical fiber having a core that has a graded refractive index profile is disclosed. A clad surrounds the core and traps light within the core. A difference between differential mode delays (DMDs) at wavelengths of about 1300 nm and about 850 nm within the core is increased in a radial direction. The difference between the DMDs at both the wavelengths basically has a value equal to or less than 0.6 ns/km between a position corresponding to 50% of a radius of the core and a center of the core.

Growing community of inventors

Gumi-si, South Korea

Yun-Geun Jang