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1. 发明授权

US08315494B2 Optical fiber 有权
标题翻译：光纤
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。

2. 发明申请

US20120134636A1 HOLEY FIBER 有权
标题翻译： HOLEY纤维
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。

3. 发明授权

US08787720B2 Optical fiber 有权
标题翻译：光纤
公开(公告)号：US08787720B2
公开(公告)日：2014-07-22
申请号：US13372044
申请日：2012-02-13
申请人： Kazunori Mukasa , Yukihiro Tsuchida
发明人： Kazunori Mukasa , Yukihiro Tsuchida
IPC分类号： G02B6/032
CPC分类号： G02B6/02019 , G02B6/02366 , G02B6/0281 , G02B6/03611 , G02B6/03633 , G02B6/03644 , G02B6/0365
摘要： An optical fiber includes a core portion that confines light therein and guides the light therethrough and a cladding portion that is formed around an outer circumference of the core portion. The cladding portion contains a hole which is formed at a position a distance away from the core portion such that the hole does not substantially affect an effective core area or a chromatic dispersion characteristic of the optical fiber. The hole decreases a microbending loss of the optical fiber.
摘要翻译：光纤包括将光限制在其中并引导光的芯部和围绕芯部的外周形成的包层部。包层部分包含一个孔，该孔形成在远离芯部的距离的位置处，使得该孔基本上不影响光纤的有效芯面积或色散特性。该孔减小了光纤的微弯损耗。

4. 发明授权

US08437594B2 Holey fiber 有权
标题翻译：多孔纤维
公开(公告)号：US08437594B2
公开(公告)日：2013-05-07
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： G02B6/032
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，所述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晶格，而d /λ在0.33至0.43的范围内，当孔直径为微米时，λ在10.5微米至15微米的范围内，并且三角形的晶格常数晶格是微米的λ，在1550纳米的波长下，有效核心面积等于或大于130mum2，在弯曲直径为20毫米的情况下的弯曲损耗等于或等于小于200dB / m，多孔光纤显示单模操作。

5. 发明申请

US20100150507A1 HOLEY FIBER 审中-公开
标题翻译： HOLEY纤维
公开(公告)号：US20100150507A1
公开(公告)日：2010-06-17
申请号：US12649388
申请日：2009-12-30
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： G02B6/02009 , G02B6/02366
摘要： A holey fiber includes a core portion and a cladding portion positioned around a periphery of the core portion. The cladding portion includes 12 to 36 holes that are arranged circularly at a radius of 36 to 48 micrometers around a center of the core portion and that each have a hole diameter of 2.0 to 11.0 micrometers. At a wavelength of 1064 nanometers the holey fiber substantially performs a single-mode operation and has an effective core area equal to or greater than 1500 μm2.
摘要翻译：多孔纤维包括芯部和围绕芯部的周边定位的包层部分。包层部分包括12至36个孔，其围绕芯部的中心以36至48微米的圆周圆周布置，并且每个具有2.0至11.0微米的孔直径。在1064纳米的波长下，多孔光纤基本上进行单模操作，并且具有等于或大于1500μm2的有效芯面积。

6. 发明申请

US20090252470A1 OPTICAL FIBERS AND OPTICAL TRANSMISSION SYSTEMS 有权
公开(公告)号：US20090252470A1
公开(公告)日：2009-10-08
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.

7. 发明授权

US07085462B2 Optical fiber, optical fiber module and optical amplifier 失效
标题翻译：光纤，光纤模块和光放大器
公开(公告)号：US07085462B2
公开(公告)日：2006-08-01
申请号：US10309249
申请日：2002-12-04
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/02
CPC分类号： G02B6/0281 , G02B6/02004 , G02B6/02242 , G02B6/02261 , G02B6/03627 , G02B6/03644
摘要： An optical fiber whose value of a ratio of a dispersion to the dispersion slope ranges between 50 nm and 150 nm at the wavelength of 1590 nm. Also, a dispersion compensated optical fiber includes a depressed layer formed of at least one of a plurality of core layers covering the outer circumference of the center core. The depressed layer has −0.7% or less of a relative refractive index difference with the clad. The dispersion compensated optical fiber has the ratio of the dispersion to the dispersion slope falling within a range of between 30 nm and 80 nm at the wavelength of 1550 nm, or a dispersion value not larger than −20 ps/nm/km, a dispersion slope not larger than −0.05 ps/nm2/km, and an effective core cross sectional area Aeff falling within a range of between 8 and 13 μm2.
摘要翻译：在1590nm的波长处，色散与色散斜率的比值的值在50nm和150nm之间的光纤。此外，色散补偿光纤包括由覆盖中心芯的外周的多个芯层中的至少一个形成的凹陷层。凹陷层与包层的相对折射率差为-0.7％以下。色散补偿光纤的波长为1550nm时的色散与色散斜率的比率为30nm〜80nm，色散值为-20ps / nm / km以下，色散斜率不大于-0.05ps / nm 2 / km，有效芯横截面积A eff处于8和13μm之间的范围内。

8. 发明授权

US06879763B2 Reverse dispersion optical fiber and optical transmission line using reverse dispersion optical fiber 有权
标题翻译：反向色散光纤和光传输线使用反向色散光纤
公开(公告)号：US06879763B2
公开(公告)日：2005-04-12
申请号：US10186740
申请日：2002-07-02
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/028 , G02B6/036 , G02B6/22 , G02B6/16
CPC分类号： G02B6/02009 , G02B6/02238 , G02B6/02252 , G02B6/02285 , G02B6/0281 , G02B6/03644 , G02B6/29377
摘要： A reverse dispersion optical fiber having a small waveform distortion caused by non-linearity wherein an effective core area is made at least 50 μm2 and a dispersion at a wavelength of the 1.55 μm band is made not more than −10 ps/nm/km and a dispersion management optical transmission line having a small waveform distortion obtained by connecting a positive dispersion optical fiber and that reverse dispersion optical fiber in that order along a direction of signal transmission and having a total dispersion of substantially zero.
摘要翻译：具有由非线性引起的具有小的波形失真的反向色散光纤，其中有效核心区域至少为50mum2，而在1.55mum波段的波长处的色散不大于-10ps / nm / km，以及具有通过沿着信号传输方向依次连接正色散光纤和该反向色散光纤并具有基本为零的总色散而获得的小波形失真的色散管理光传输线。

9. 发明授权

US06810186B2 Optical transmission line 有权
公开(公告)号：US06810186B2
公开(公告)日：2004-10-26
申请号：US10781719
申请日：2004-02-20
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B622
CPC分类号： G02B6/02009 , G02B6/02004 , G02B6/02252 , G02B6/02261 , G02B6/02266 , G02B6/02271 , G02B6/02276 , G02B6/0228 , G02B6/02285 , G02B6/0281 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03644 , G02B6/29377 , H04B10/25253
摘要： An optical transmission line according to the present invention is an optical transmission line which is able to control both the waveform distortion due to the non-linearity phenomenon and the waveform distortion due to dispersion. The optical transmission line is formed by connecting, in series, the first optical fiber (8), of which the dispersion value in the set wavelength band within the 1.5 &mgr;m wavelength band is 6 to 14 ps/nm/km, and the second optical fiber (9), of which the dispersion value in said set wavelength band is −14 to −6 ps/nm/km. The dispersion slopes of the first optical fiber (8) and the second optical fiber (9) are of mutually opposite symbols. Light transmitted from an optical transmitter (11) enters the first optical fiber (8) and light which has been transmitted through the first optical fiber (8) enters the second optical fiber (9). The absolute value of the dispersion in the 1.5 &mgr;m wavelength band of each of the optical fibers (8) and (9) is set to be 6 ps/nm/km or more so as to control the four light wave mixture and said absolute value is set to be 14 ps/nm/km or less so as to control a local dispersion, in order to set at approximately zero, for the entire optical transmission line, both the dispersion value and the dispersion slope in said set wavelength band.

10. 发明授权

US06795629B2 Optical fiber and optical communication system using this optical fiber 有权
公开(公告)号：US06795629B2
公开(公告)日：2004-09-21
申请号：US10642630
申请日：2003-08-19
申请人： Kazunori Mukasa , Naomi Kumano
发明人： Kazunori Mukasa , Naomi Kumano
IPC分类号： G02B618
CPC分类号： G02B6/02009 , C03B2203/22 , C03B2203/36 , G02B6/02242 , G02B6/02271 , G02B6/0281 , G02B6/03644 , G02B6/03666 , G02B6/03688
摘要： The present invention resides in an optical fiber able to form an optical transmitting line for wavelength division multiplexing transmission in a wavelength band of 1.5 &mgr;m using a Raman amplifier, and an optical communication system using this optical fiber. The optical fiber has an effective core area from 40 &mgr;m2 to 60 &mgr;m2 in a set wavelength band of at least one portion of a wavelength band of 1.5 &mgr;m; a dispersion value from 4 to 10 ps/nm/km at a wavelength of 1.55 &mgr;m; a dispersion slope set to a positive value equal to or smaller than 0.04 ps/nm2/km in a wavelength band of 1.55 &mgr;m; and a zero dispersion wavelength equal to or smaller than 1.4 &mgr;m. Further, a cutoff wavelength is set to be equal to or smaller than 1.5 &mgr;m at a length of 2 m, and a bending loss is set to be equal to or smaller than 5 dB/m at a diameter of 20 mm in the wavelength band of 1.5 &mgr;m. In a refractive index profile of the optical fiber, for example, a relative refractive index difference &Dgr;1 of a first glass layer as an innermost layer with respect to a reference layer, and a relative refractive index difference &Dgr;3 of the refractive index of a third glass layer as a third layer from an inner side with respect to the reference layer are set to be positive. Further, a relative refractive index difference &Dgr;2 of a second glass layer as a second layer from the inner side with respect to the reference layer is set to be negative.

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