公开(公告)号：US08315494B2

公开(公告)日：2012-11-20

申请号：US13422937

申请日：2012-03-16

申请人： Yukihiro Tsuchida ,  Kazunori Mukasa

发明人： Yukihiro Tsuchida ,  Kazunori Mukasa

IPC分类号： G02B6/036 ,  G02B6/028

CPC分类号： G02B6/02019 ,  G02B6/02366 ,  G02B6/0365 ,  G02B6/03672

摘要： An optical fiber includes a center core portion; an inner core layer formed around an outer circumference of the center core portion, a refractive index of which is less than that of the center core portion; an outer core layer formed around an outer circumference of the inner core layer, a refractive index of which is less than that of the inner core layer; and a cladding portion formed around an outer circumference of the outer core layer. A refractive index of the cladding portion is substantially equal to that of the inner core layer. At a wavelength of 1550 nm, an effective core area is equal to or larger than 130 μm2 and a bending loss is equal to or less than 100 dB/m when the optical fiber is bent with a diameter of 20 mm. A cable cut-off wavelength is equal to or less than 1530 nm.

摘要翻译： 光纤包括中心芯部分; 形成在所述中心芯部的外周周围的内芯层，其折射率小于所述中心芯部的折射率; 形成在所述内芯层的外周的外芯层，其折射率小于所述内芯层的折射率; 以及形成在所述外芯层的外周的包层部。 包层部分的折射率基本上等于内芯层的折射率。 在1550nm的波长下，当光纤弯曲直径为20mm时，有效芯面积等于或大于130μm2，弯曲损耗等于或小于100dB / m。 电缆截止波长等于或小于1530nm。

公开(公告)号：US20120134636A1

公开(公告)日：2012-05-31

申请号：US13366408

申请日：2012-02-06

申请人： Yukihiro Tsuchida ,  Kazunori Mukasa

发明人： Yukihiro Tsuchida ,  Kazunori Mukasa

IPC分类号： G02B6/02

CPC分类号： G02B6/02347 ,  G02B6/02228

摘要： A holey fiber includes a core portion located at a center of the holey fiber, and a cladding portion located around the core portion, the cladding portion having holes formed in layers around the core portion. The holes are arranged so as to form a triangular lattice while d/Λ is within a range of 0.33 to 0.43, Λ is within a range of 10.5 micrometers to 15 micrometers when a hole diameter is d in micrometer and a lattice constant of the triangular lattice is Λ in micrometer, and in a wavelength of 1550 nanometer, an effective core-area is equal to or greater than 130 μm2, a bending loss in a case of bending the holey fiber at a bend diameter of 20 millimeters is equal to or less than 200 dB/m, and the holey fiber demonstrates a single-mode operation.

摘要翻译： 多孔纤维包括位于多孔纤维的中心的芯部和位于芯部周围的包层部分，包层部分具有围绕芯部分形成的孔。 这些孔被布置成形成三角形格子，而d /Λ在0.33至0.43的范围内，当孔直径为微米的d和三角形的晶格常数时，Λ在10.5微米至15微米的范围内 晶格为Λ微米，在1550纳米的波长下，有效核心面积等于或大于130平方米，在弯曲直径为20毫米的情况下，弯曲损耗等于或等于 小于200dB / m，多孔光纤显示单模操作。

公开(公告)号：US07978949B2

公开(公告)日：2011-07-12

申请号：US12429924

申请日：2009-04-24

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B6/036

CPC分类号： G02B6/03644 ,  G02B6/02266 ,  G02B6/03627

摘要： Optical fibers and optical transmission systems, which are capable of broadband and large capacity single-mode optical transmission, and have low macrobends are provided.The optical fiber made from pure silica comprising a core region, a cladding region at the circumference of the core region a coating layer made from a resin at the circumference of the cladding region, and having a cutoff wavelength of shorter than 1530 nm, and positive dispersion at 1550 nm, bending loss of less than 10 dB/m at a bending diameter of 20 mm, and an effective core area of 120 μm2.

摘要翻译： 提供能够进行宽带和大容量单模光传输并具有低宏弯的光纤和光传输系统。 由纯二氧化硅制成的光纤，其包括芯区域，芯区域周围的包层区域，由包层区域周围的树脂制成的涂层，截止波长小于1530nm，正极 在1550nm处的分散，弯曲直径为20mm的弯曲损耗小于10dB / m，有效芯面积为120μm2。

公开(公告)号：US20110091176A1

公开(公告)日：2011-04-21

申请号：US12938104

申请日：2010-11-02

申请人： Masanori TAKAHASHI ,  Katsunori Imamura ,  Kazunori Mukasa ,  Takeshi Yagi

发明人： Masanori TAKAHASHI ,  Katsunori Imamura ,  Kazunori Mukasa ,  Takeshi Yagi

IPC分类号： G02B6/032

CPC分类号： G02B6/02347 ,  G02B6/02019 ,  G02B6/02361 ,  G02B6/02366

摘要： A holey fiber with significantly large effective core area is provided. The holey fiber comprises a core portion and a cladding portion at the circumference of the core portion. The cladding portion has plurality of holes distributed to shape triangular lattices around the core portion; wherein d/Λ is less than or equal to 0.42, the diameter of the holey fiber is larger than or equal to 580 μm, an effective core area is larger than or equal to 15000 μm2 at 1064 nm and a confinement loss is less than or equal to 0.1 dB/m at 1064 nm; where d is the hole diameter in μm and Λ is a lattice constant of the triangular lattice in μm.

公开(公告)号：US07881579B2

公开(公告)日：2011-02-01

申请号：US12208951

申请日：2008-09-11

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B6/032 ,  H04B10/12

CPC分类号： G02B6/02261 ,  G02B6/02347 ,  G02B6/0281 ,  G02B6/03644 ,  G02B6/29377

摘要： An optical transmission system employs an optical fiber as an optical transmission path that includes a holey fiber and a dispersion-compensating optical fiber. The holey fiber includes a core region that is formed at a center of the holey fiber and a cladding region having a plurality of holes around the core region at regular intervals. The dispersion-compensating optical fiber is connected close to the holey fiber and that collectively compensates wavelength dispersion of the holey fiber at an operation wavelength in at least two wavelength bands out of O band, E band, S band, C band, and L band within a predetermined range depending on a transmission rate.

摘要翻译： 光传输系统采用光纤作为包括多孔光纤和色散补偿光纤的光传输路径。 多孔纤维包括形成在多孔纤维的中心的芯区域和具有围绕芯区域周围的规则间隔的多个孔的包层区域。 色散补偿光纤靠近多孔光纤连接，并且在O波段，E波段，S波段，C波段和L波段中的至少两个波长带中的工作波长下共同补偿多孔光纤的波长色散 在预定范围内取决于传输速率。

公开(公告)号：US20100202742A1

公开(公告)日：2010-08-12

申请号：US12720469

申请日：2010-03-09

申请人： Kazunori MUKASA

发明人： Kazunori MUKASA

IPC分类号： G02B6/032

CPC分类号： G02B6/02214 ,  G02B6/02347

摘要： A holey fiber has: a core region at a center of the holey fiber; a cladding region around the core region; a plurality of holes included in the cladding region, formed in layers around the core region, arranged to form a triangular lattice having a lattice constant Λ of 2 micrometers to 5 micrometers, and each having a diameter of d micrometers; and a wavelength dispersion value of −10 ps/nm/km to 10 ps/nm/km at a wavelength of 1050 nanometers when d/Λ is 0.3 to 0.47.

摘要翻译： 多孔纤维具有：在多孔纤维的中心的芯区; 围绕芯区域的包层区域; 包围在芯区域周围的包层区域中的多个孔被布置成形成具有2微米至5微米的晶格常数Λ的每个直径为d微米的三角形晶格; 并且当d /Λ为0.3至0.47时，在1050纳米的波长处的波长色散值为-10ps / nm / km至10ps / nm / km。

公开(公告)号：US20090123122A1

公开(公告)日：2009-05-14

申请号：US12268527

申请日：2008-11-11

申请人： Kazunori MUKASA

发明人： Kazunori MUKASA

IPC分类号： G02B6/036

CPC分类号： G02B6/03644 ,  G02B6/02266 ,  G02B6/03627

摘要： Optical fibers and optical transmission systems, which are capable of broadband and large capacity single-mode optical transmission, and have low macrobends are provided. The optical fiber made from pure silica comprising a core region, a cladding region at the circumference of the core region a coating layer made from a resin at the circumference of the cladding region, and having a cutoff wavelength of shorter than 1530 nm, and positive dispersion at 1550 nm, bending loss of less than 10 dB/m at a bending diameter of 20 mm, and an effective core area of 120 μm2.

摘要翻译： 提供能够进行宽带和大容量单模光传输并具有低宏弯的光纤和光传输系统。 由纯二氧化硅制成的光纤，其包括芯区域，芯区域周围的包层区域，由包层区域周围的树脂制成的涂层，截止波长小于1530nm，正极 在1550nm处的分散，弯曲直径为20mm的弯曲损耗小于10dB / m，有效芯面积为120mum2。

公开(公告)号：US20090080844A1

公开(公告)日：2009-03-26

申请号：US12185841

申请日：2008-08-05

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B6/028 ,  H04J14/02

CPC分类号： G02B6/03627 ,  G02B6/02019 ,  G02B6/02261 ,  G02B6/0228 ,  G02B6/02342 ,  G02B6/29317 ,  G02B6/29377 ,  G02B6/29394

摘要： A photonic bandgap fiber includes a core formed by a hole at its center, an outer cladding formed around the core, and an inner cladding formed between the core and the outer cladding, in which a two-dimensional Bragg grating is formed by periodically arranging a medium having a different refractive index. An optical fiber is connected to the photonic bandgap fiber, which has wavelength dispersion equal to or larger than 0 ps/nm/km and smaller than wavelength dispersion of the photonic bandgap fiber and D/S value, which is obtained by dividing the wavelength dispersion by dispersion slope, larger than D/S value of the photonic bandgap fiber.

摘要翻译： 光子带隙光纤包括由其中心处的孔形成的芯，围绕芯形成的外包层和形成在芯和外包层之间的内包层，其中通过周期性地布置二维布拉格光栅形成二维布拉格光栅 介质具有不同的折射率。 光纤连接到光子带隙光纤，其具有等于或大于0ps / nm / km并且小于光子带隙光纤的波长色散和D / S值的波长色散，其通过将波长色散 通过色散斜率大于光子带隙光纤的D / S值。

公开(公告)号：US06879762B2

公开(公告)日：2005-04-12

申请号：US10266741

申请日：2002-10-09

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B6/036 ,  G02B6/34 ,  H04B10/2507 ,  H04B10/2525 ,  H04B10/2563 ,  H04J14/00 ,  H04J14/02 ,  G02B6/22

CPC分类号： G02B6/02014 ,  G02B6/02257 ,  G02B6/02271 ,  G02B6/0228 ,  G02B6/0281 ,  G02B6/03611 ,  G02B6/03644 ,  G02B6/03688 ,  G02B6/29377

摘要： Disclosed is an optical transmission line having a length L of 30 km to 150 km, preferably 30 km to 70 km, an absolute value of a dispersion not smaller than 8 ps/nm/km at a wavelength of 1.55 μm at every point of the optical transmission line, a maximum accumulated dispersion not larger than 7.5×L (ps/nm) at a wavelength of 1.55 μm, and a dispersion for the entire optical transmission line of −5 to +5 ps/nm/km at a wavelength of 1.55 μm. The optical transmission line is formed by, for example, combination of a positive dispersion optical fiber and a negative dispersion optical fiber.

摘要翻译： 公开了一种长度为30公里至150公里，优选为30公里至70公里的光传输线，在每个点的1.55毫米处的波长为1.5ps / nm / km的色散的绝对值不小于8ps / nm / 光传输线，在1.55μm波长下不大于7.5xL（ps / nm）的最大累积色散，以及在波长为1.55时为-5至+ 5ps / nm / km的整个光传输线的色散 妈妈 光传输线例如由正色散光纤和负色散光纤的组合形成。

公开(公告)号：US06701051B2

公开(公告)日：2004-03-02

申请号：US10184802

申请日：2002-07-01

申请人： Kazunori Mukasa

发明人： Kazunori Mukasa

IPC分类号： G02B616

CPC分类号： G02B6/03644 ,  G02B6/02014 ,  G02B6/02242 ,  G02B6/02285 ,  G02B6/0281 ,  G02B6/03633 ,  G02B6/29377

摘要： A dispersion management optical fiber transmission line of a superlow loss formed by combining a plurality of optical fibers and suitable for long distance, high speed, large capacity transmission, that is, an optical fiber transmission line including a positive dispersion optical fiber having a positive dispersion and a positive dispersion slope and a negative dispersion optical fiber having a negative dispersion and negative dispersion slope and having a non-zero dispersion at the 1.55 &mgr;m, wherein the transmission loss at the 1.55 &mgr;m band of the positive dispersion fiber and the negative dispersion fiber are both not more than 0.23 dB/km and the difference in transmission losses of the two optical fibers is not more than 0.05 dB/km.

摘要翻译： 一种通过组合多根光纤而适用于长距离，高速，大容量传输而形成的超低损耗的色散管理光纤传输线，即包括具有正色散的正色散光纤的光纤传输线 以及具有负色散和负色散斜率并且在1.55μm处具有非零色散的正色散斜率和负色散光纤，其中正色散光纤和负色散光纤的1.55μm带的传输损耗 都不超过0.23 dB / km，两根光纤的传输损耗差不超过0.05 dB / km。