公开(公告)号：US07003205B2

公开(公告)日：2006-02-21

申请号：US10634699

申请日：2003-08-05

Applicant: Jeong-Sik Cho ,  Mun-Hyun Do ,  Jin-Seong Yang ,  Sang-Ho Cha ,  Ju-Chang Han ,  Yun-Geun Jang ,  Ki-Moon Kwak

Inventor： Jeong-Sik Cho ,  Mun-Hyun Do ,  Jin-Seong Yang ,  Sang-Ho Cha ,  Ju-Chang Han ,  Yun-Geun Jang ,  Ki-Moon Kwak

IPC: G02B6/02 ,  G02B6/22 ,  G02B6/16 ,  G02B6/18

CPC classification number: G02B6/03633 ,  G02B6/02014 ,  G02B6/02223 ,  G02B6/02238 ,  G02B6/0281 ,  H01S3/06725 ,  H01S3/06729 ,  H01S3/302

Abstract: 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.

Abstract translation: 公开了一种宽带色散控制光纤。 该光纤通过控制零色散波长的位置，能够在波分复用模式通信网络中的各种波长区域中使用光信号，并且通过控制色散斜率和弯曲损耗来实现长距离传输。 此外，光纤的优点在于，不仅能够实现短距离传输，而且还能够使用单一类型的光纤进行中长距离传输，因为光纤被控制为在O波段波长区域具有负色散值， 在C波段和L波段区域中具有小偏差的正色散值。

公开(公告)号：US06729163B2

公开(公告)日：2004-05-04

申请号：US09734124

申请日：2000-12-11

Applicant: Jin-Seong Yang ,  Mun-Hyun Do

Inventor： Jin-Seong Yang ,  Mun-Hyun Do

IPC: C03B3702

CPC classification number: C03B37/01248 ,  C03B23/043 ,  C03B37/01257 ,  F23D14/32 ,  Y02P40/57

Abstract: Disclosed is a high efficiency burner and an apparatus for over-cladding an optical fiber pre-form using the same. The high efficiency burner heating an optical fiber pre-form includes burner covers, burner bodies arranged between the burner covers, and fuel dischargers arranged in at least two rows between the burner bodies, and divided by a partition, respectively.

Abstract translation: 公开了一种高效率燃烧器和用于使用该燃烧器的光纤预制件的外包层的装置。 加热光纤预制件的高效率燃烧器包括燃烧器盖，布置在燃烧器盖之间的燃烧器主体和分布在燃烧器主体之间的至少两排的燃料排放器，并且分隔开。

公开(公告)号：US06697562B1

公开(公告)日：2004-02-24

申请号：US09619715

申请日：2000-07-19

Applicant: Ji-Hoon Lee ,  Mun-Hyun Do

Inventor： Ji-Hoon Lee ,  Mun-Hyun Do

IPC: G02B600

CPC classification number: G02B6/02009 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/36 ,  G02B6/02219 ,  G02B6/02242 ,  G02B6/03622 ,  G02B6/03694 ,  Y02P40/57

Abstract: A dispersion control fiber and a method of manufacturing a large size preform. The dispersion control fiber includes a core composed of SiO2, GeO2, and P2O5, and a cladding composed of SiO2, GeO2, P2O5, and Freon. The P2O5 content is selected not to exceed 10% total weight of a compound composing the core. The method of manufacturing a large size perform for a dispersion control fiber by an MCVD process includes depositing SiO2, GeO2, P2O5, and Freon in an inner periphery of a deposition tube to form a cladding layer, and depositing SiO2, GeO2, and P2O5 on an inner periphery of the cladding layer to form a core layer.

Abstract translation: 一种分散控制纤维及其制造方法。 色散控制光纤包括由SiO 2，GeO 2和P 2 O 5组成的芯和由SiO 2，GeO 2，P 2 O 5和氟利昂组成的包层。 选择P2O5含量不超过构成核心的化合物的总重量的10％。 通过MCVD工艺制造用于分散控制光纤的大尺寸的方法包括在沉积管的内周中沉积SiO 2，GeO 2，P 2 O 5和氟利昂以形成包覆层，并将SiO 2，GeO 2和P 2 O 5沉积在 包层的内周，形成芯层。

公开(公告)号：US06678451B2

公开(公告)日：2004-01-13

申请号：US09814675

申请日：2001-03-22

Applicant: Chang-Bum Kim ,  Jin-Sung Yang ,  Mun-Hyun Do ,  Yoon-Gun Jang

Inventor： Chang-Bum Kim ,  Jin-Sung Yang ,  Mun-Hyun Do ,  Yoon-Gun Jang

IPC: G02B602

CPC classification number: G02B6/0288

Abstract: Disclosed is a multimode optical fiber having a structure to reduce scattering loss which includes a core divided into a central region having the optimal refractive index according to an optimal core shape index minimizing the scattering loss of the multimode optical fiber, and a peripheral region having the refractive index lower than that of the central region; and a cladding enclosing the core and having the refractive index lower than the lowest refractive index of the core.

Abstract translation: 公开了一种具有减少散射损耗的结构的多模光纤，其包括根据使多模光纤的散射损耗最小化的最佳芯形状指数分为具有最佳折射率的中心区域的芯，以及具有 折射率低于中心区域; 以及包围芯并且折射率低于芯的最低折射率的包层。

公开(公告)号：US06205279B1

公开(公告)日：2001-03-20

申请号：US09186628

申请日：1998-11-06

Applicant: Jin-han Kim ,  Mun-hyun Do ,  Ji-hoon Lee

Inventor： Jin-han Kim ,  Mun-hyun Do ,  Ji-hoon Lee

IPC: G02B602

CPC classification number: G02B6/02238 ,  G02B6/03638 ,  G02B6/03666

Abstract: An optical fiber having a multi-step core structure, and a method of fabricating the same, are provided. The optical fiber includes a central core having a predetermined radius a1 from an central axis and a refractive index n1, a first outer core having a radius a2 and a refractive index n2 smaller than the refractive index n1 and surrounding the central core, a second outer core having a radius a3 and a refractive index n3 smaller than the refractive index n2 and surrounding the first outer core, and a cladding having a radius a4 and a refractive index n0 smaller than the refractive index n3 and surrounding the second outer core, i.e., a1 n2>n3>n0. The diameter of the core is increased by making the refractive index distribution of the core multi-stepped, thus providing easy fabrication. The optical fiber has a low dispersion value in a 1550 nm wavelength, thus making superspeed long distance transmission possible.

Abstract translation: 提供具有多级芯结构的光纤及其制造方法。 光纤包括具有中心轴的预定半径a1和折射率n1的中心纤芯，第一外芯具有半径a2，折射率n2小于折射率n1并围绕中心芯，第二外芯 芯部具有半径a3，折射率n3小于折射率n2并围绕第一外芯，以及包层，其具有半径a4，折射率n0小于折射率n3并围绕第二外芯，即， a1 n2> n3> n0。 芯的直径通过使芯的折射率分布多级增加，从而提供容易的制造。 光纤在1550nm波长处具有低色散值，从而使得超高距离传输成为可能。

公开(公告)号：US6053013A

公开(公告)日：2000-04-25

申请号：US049030

申请日：1998-03-27

Applicant: Seung-Hun Oh ,  Ki-Un Namkoong ,  Man-Seok Seo ,  Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Mun-Hyun Do ,  Young-Joo Chung

Inventor： Seung-Hun Oh ,  Ki-Un Namkoong ,  Man-Seok Seo ,  Un-Chul Paek ,  Kyung-Hwan Oh ,  Ghie-Hugh Song ,  Mun-Hyun Do ,  Young-Joo Chung

IPC: C03B23/043 ,  C03B23/045 ,  C03B37/012 ,  C03B37/018 ,  C03B37/027 ,  C03B37/029 ,  C03B37/028 ,  C03B37/10 ,  C03B37/07 ,  C03C25/02

CPC classification number: C03B37/01248 ,  C03B23/043 ,  C03B23/045 ,  C03B37/01211 ,  C03B37/01257 ,  C03B37/01807 ,  C03B37/027 ,  C03B37/029 ,  C03B2205/08 ,  Y02P40/57

Abstract: There are provided an optical fiber rod overcladding apparatus and method, and an optical fiber drawing method. In the preform rod overcladding method, a preform rod is clamped in a top chuck and leveled, and a glass tube is mounted in a bottom chuck and leveled. The preform rod is coaxially inserted into a glass tube. Then, the glass tube is preheated by the furnace and heated by the burner until the glass tube reaches a softening point. The preform rod is completely sealed in the glass tube by sucking air in a clearance between the preform rod and the glass tube by application of a negative vacuum pressure. Thus, a preform is completed.

Abstract translation: 提供了一种光纤棒外包装置和方法，以及一种光纤拉丝方法。 在预成型棒包覆方法中，将预成型棒夹在顶卡盘中并平整，并将玻璃管安装在底卡盘中并平整。 预制棒同轴地插入玻璃管中。 然后，玻璃管由炉预热并通过燃烧器加热直到玻璃管达到软化点。 通过施加负真空压力，将预制棒通过在预成型棒和玻璃管之间的间隙中吸入空气而完全密封在玻璃管中。 因此，完成预成型件。

公开(公告)号：US20070157674A1

公开(公告)日：2007-07-12

申请号：US11545847

申请日：2006-10-11

Applicant: Young-Sik Yoon ,  Mun-Hyun Do ,  Jin-Haing Kim

Inventor： Young-Sik Yoon ,  Mun-Hyun Do ,  Jin-Haing Kim

IPC: C03B37/018 ,  C03B37/01 ,  C03B37/10

CPC classification number: C03B37/01466 ,  C03B37/01446

Abstract: Disclosed is a method for fabricating an optical fiber preform. The method includes: (a) growing a first soot preform on a starting member along a lengthwise direction of the starting member by a soot deposition; (b) dehydrating the first soot preform; (c) sintering the dehydrated first soot preform, to obtain a first glassed optical preform; and (d) elongating the first optical fiber preform by heating the first optical fiber with a heat source that excludes hydrogen, wherein the first glassed optical fiber is elongated by means of only a heat source that excludes the use of hydrogen.

Abstract translation: 公开了一种制造光纤预制棒的方法。 该方法包括：（a）通过烟灰沉积沿起始构件的长度方向在起始构件上生长第一烟灰预制件; （b）使第一烟炱预制件脱水; （c）烧结脱水的第一烟炱预制件，以获得第一玻璃化的光学预型件; 以及（d）通过用排除氢气的热源对所述第一光纤进行加热来延长所述第一光纤预制件，其中，所述第一玻璃纤维仅借助于排除使用氢的热源而伸长。

公开(公告)号：US20070084248A1

公开(公告)日：2007-04-19

申请号：US11516205

申请日：2006-09-06

Applicant: Jin-Haing Kim ,  Ho-Jin Lee ,  Mun-Hyun Do ,  Jae-Hyeon Seong ,  Yun-Ho Kim

Inventor： Jin-Haing Kim ,  Ho-Jin Lee ,  Mun-Hyun Do ,  Jae-Hyeon Seong ,  Yun-Ho Kim

IPC: C03B37/07 ,  C03B37/018 ,  F27B1/26

CPC classification number: C03B37/0142 ,  C03B2207/64 ,  C03B2207/66 ,  C03B2207/70 ,  Y02P40/57

Abstract: Disclosed is a vapor axial deposition apparatus. The vapor axial deposition apparatus includes a first torch, a second torch, a temperature measuring unit and a controller unit. The first torch deposits soot on a distal end of a soot preform aligned with a vertical axis to thereby grow a core. The second torch deposits soot on an outer circumferential surface of the core to thereby grow a clad. The temperature measuring unit detects the temperature distribution of an end portion of the soot preform along the vertical axis. The controller unit determines first and second relative maximum temperatures T1 and T3, and relative minimum temperature T2 between T1 and T3 in the detected temperature distribution, and controls T1 to be within a predetermined range and the greater one of the difference (T1−T2) and (T3−T2) to not exceed a predetermined temperature.

Abstract translation: 公开了一种蒸气轴向沉积装置。 蒸气轴向沉积装置包括第一炬，第二炬，温度测量单元和控制器单元。 第一个火炬放置在烟炱预制件的远端上与竖直轴线对齐，从而生长芯。 第二焊炬在芯的外周表面上沉积烟灰，从而生长包层。 温度测量单元沿垂直轴检测煤烟预制件的端部的温度分布。 控制器单元在检测到的温度分布中确定第一和第二相对最高温度T 1和T 3以及T 1和T 3之间的相对最低温度T 2，并且控制T 1在预定范围内，并且较大的 差（T 1 -T 2）和（T 3 -T 2）不超过预定温度。

公开(公告)号：US06999667B2

公开(公告)日：2006-02-14

申请号：US10391669

申请日：2003-03-19

Applicant: Yun-Geun Jang ,  Mun-Hyun Do ,  Sung-Wook Choi ,  Ju-Chang Han ,  Jeong-Sik Cho ,  Jin-Seong Yang

Inventor： Yun-Geun Jang ,  Mun-Hyun Do ,  Sung-Wook Choi ,  Ju-Chang Han ,  Jeong-Sik Cho ,  Jin-Seong Yang

IPC: G02B6/02 ,  G02B6/16 ,  G02B6/18

CPC classification number: G02B6/02266 ,  G02B6/02009 ,  G02B6/0228 ,  G02B6/03627

Abstract: Disclosed is an optical fiber comprising a center core which forms a passageway for transmitting optical signals and has a refractive index N1, and a cladding which encloses the center core and has a refractive index N0. The optical fiber further comprises an upper core, which has a distribution of refractive indices increased starting from a refractive index N2 (>N0) at its outer circumference to the refractive index N1 at its internal circumference, and a minutely depressed refractive index region, which is interposed between said upper core and cladding and has a refractive index N3. The refractive index N3 is lower than the refractive index N0.

Abstract translation: 公开了一种光纤，包括中心芯，其形成用于传输光信号并具有折射率N 1的通道，以及包围中心纤芯并具有折射率N 0的包层 。 光纤还包括上芯，其具有从其外圆周处的折射率N 2（> N O 2）开始的折射率分布，折射率分布从折射率N 2 在其内圆周处的折射率N 1 N和折射率N 3 3以下的微小凹陷的折射率区域。 折射率N 3 3低于折射率N 0 O 3。

公开(公告)号：US06711341B2

公开(公告)日：2004-03-23

申请号：US10166095

申请日：2002-06-11

Applicant: Ji-Hoon Lee ,  Mun-Hyun Do

Inventor： Ji-Hoon Lee ,  Mun-Hyun Do

IPC: G02B600

CPC classification number: G02B6/02009 ,  C03B37/01807 ,  C03B2201/12 ,  C03B2201/28 ,  C03B2201/31 ,  C03B2203/36 ,  G02B6/02219 ,  G02B6/02242 ,  G02B6/03622 ,  G02B6/03694 ,  Y02P40/57

Abstract: A dispersion control fiber and a method of manufacturing a large size preform are provided. In one embodiment, the dispersion control fiber comprises a core composed of SiO2, GeO2, P2O5 and Freon, and a cladding composed of SiO2, GeO2, P2O5, and Freon. The P2O5 content is selected not to exceed 10% of the total weight of a compound composing the core. An embodiment of the method of manufacturing a large size preform for a dispersion control fiber by an MCVD process comprises depositing SiO2, GeO2, P2O5, and Freon in an inner periphery of a deposition tube to form a cladding layer, and depositing SiO2, GeO2, P2O5 and Freon on an inner periphery of the cladding layer to form a core layer.

Abstract translation: 提供了一种分散控制纤维及其制造方法。 在一个实施方案中，色散控制光纤包括由SiO 2，GeO 2，P 2 O 5和氟利昂组成的芯和由SiO 2，GeO 2，P 2 O 5和氟利昂组成的包层。 选择P2O5含量不超过构成核心的化合物总重量的10％。 通过MCVD工艺制造用于分散控制纤维的大尺寸预制件的方法的一个实施方案包括在沉积管的内周中沉积SiO 2，GeO 2，P 2 O 5和氟利昂以形成包覆层，并且沉积SiO 2，GeO 2， P2O5和氟利昂在包覆层的内周上形成核心层。