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21. 发明授权

US06470126B1 Dispersion compensating optical fiber, and wavelength division multiplexing transmission line using a dispersion compensating optical fiber 有权
标题翻译：色散补偿光纤和使用色散补偿光纤的波分复用传输线
公开(公告)号：US06470126B1
公开(公告)日：2002-10-22
申请号：US09582108
申请日：2000-06-22
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B616
CPC分类号： G02B6/02009 , G02B6/02004 , G02B6/02261 , G02B6/0228 , G02B6/02285 , G02B6/03627 , G02B6/03644
摘要： The invention relates to a dispersion compensating optical fiber which is connected to an optical fiber having a positive dispersion value at wavelength band of 1.55 &mgr;m and concurrently has a function of compensating dispersion of optical fibers having a positive dispersion value and a function acting as an optical transmission line, and relates to a wavelength division multiplexing optical transmission line using the dispersion compensating optical fiber. The refractive index profile of the dispersion compensating optical fiber is determined to be W-shaped. 1.0%≦&Dgr;1≦1.4% and −0.45≦&Dgr;2/&Dgr;1≦−0.285 are established where the relative refractive index difference of said center core (1) with respect to said cladding (3) is &Dgr;1, and the relative refractive index difference of said side core (2) with respect to said cladding (3) is &Dgr;2, and further 0.4≦Ra≦0.5 is established where the value Ra(Ra=a/b) of the outer diameter a of the center core (1) with respect to the outer diameter b of the side core (2) is Ra. The dispersion slope at a wavelength of 1.55 &mgr;m is negative, and the dispersion value &sgr; is −50 ps/nm/km≦&sgr;
摘要翻译：本发明涉及一种色散补偿光纤，其连接到在1.55μm波长带处具有正色散值的光纤，并且还具有补偿具有正色散值和作为光学器件的功能的光纤的色散的功能传输线，并且涉及使用色散补偿光纤的波分复用光传输线。色散补偿光纤的折射率分布被确定为W形。建立1.0％<= DELTA1 <= 1.4％和-0.45 <= DELTA2 / DELTA1 <= -0.285，其中所述中心纤芯（1）相对于所述包层（3）的相对折射率差为DELTA1，相对所述侧芯（2）相对于所述包层（3）的折射率差为DELTA2，并且还建立了0.4≤Ra<= 0.5，其中，所述侧芯（2）的外径a的值Ra（Ra = a / b）中心纤芯（1）相对于侧芯（2）的外径b为Ra。波长为1.55μm的色散斜率为负，色散σ为-50ps / nm / km <= sigma <-20ps / nm / km，其中传输损耗为0.25dB / km或更小，偏振模色散值为0.15ps / km 1/2以下，模场直径为5.5μm以上。

22. 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。

23. 发明授权

US08196435B2 Holey fiber and method of manufacturing the same 有权
标题翻译：多孔纤维及其制造方法
公开(公告)号：US08196435B2
公开(公告)日：2012-06-12
申请号：US12131355
申请日：2008-06-02
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： C03B37/07 , C03B37/025
CPC分类号： G02B6/02333 , B29D11/00663 , C03B37/0122 , C03B37/02781 , C03B2203/14 , C03B2203/42 , C03B2205/10 , G02B6/02019 , G02B6/29377 , Y02P40/57
摘要： A method of manufacturing a holey fiber includes forming a preform and drawing the preform. The forming includes arranging a core rod at a center of a jacket tube and arranging capillary tubes having hollows around the core rod inside the jacket tube. The drawing includes heat melting the preform in a heating furnace while controlling at least one of a gas pressure to be applied to insides of the hollows of the capillary tubes, a temperature of the heating furnace, and a drawing speed, based on a structure of air holes to be formed in a first layer from the core region.
摘要翻译：制造多孔纤维的方法包括形成预成型件并拉伸预制件。该成形包括将芯棒布置在护套管的中心处，并且在护套管内部布置具有围绕芯棒的中空的毛细管。该图包括在加热炉中对预成型件进行热熔融，同时基于以下结构来控制要施加到毛细管的中空部的内部的气体压力，加热炉的温度和拉伸速度中的至少一种要从芯区域形成在第一层中的气孔。

24. 发明授权

US07903919B2 Holey fiber 有权
标题翻译：多孔纤维
公开(公告)号：US07903919B2
公开(公告)日：2011-03-08
申请号：US12720469
申请日：2010-03-09
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/02
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。

25. 发明授权

US07085463B2 Optical fiber and optical transmission line 失效
标题翻译：光纤和光传输线
公开(公告)号：US07085463B2
公开(公告)日：2006-08-01
申请号：US10737850
申请日：2003-12-18
申请人： Fumio Takahashi , Kazunori Mukasa , Naomi Kumano , Satoru Ise
发明人： Fumio Takahashi , Kazunori Mukasa , Naomi Kumano , Satoru Ise
IPC分类号： G02B6/36
CPC分类号： G02B6/02009 , G02B6/02242 , G02B6/03644 , G02B6/03688
摘要： An optical fiber has a zero dispersion wavelength in a wavelength range of 1350 to 1410 nanometers; a dispersion of 2 to 8 ps/nm/km at a wavelength of 1550 nanometers; a dispersion slope of a positive value and not more than 0.05 ps/nm2/km at a wavelength of 1550 nanometers; a transmission loss of not more than 0.4 dB/km at a wavelength of 1380 nanometers; an increase of transmission loss of not more than 0.04 dB/km at a wavelength of 1380 nanometers after a hydrogen aging test; a transmission loss of not more than 0.25 dB/km at a wavelength of 1550 nanometers; and a bending loss of not more than 30 dB/m when the optical fiber is wound at a diameter of 20 millimeters at a wavelength of 1550 nanometers.
摘要翻译：光纤在1350〜1410纳米的波长范围内具有零色散波长; 在1550纳米的波长处为2〜8ps / nm / km的色散; 波长为1550纳米的正值和不大于0.05ps / nm 2 / km的色散斜率; 波长1380纳米的传输损耗不超过0.4 dB / km; 在氢老化试验后，波长1380nm处的传输损耗增加不超过0.04dB / km; 波长1550纳米的传输损耗不大于0.25 dB / km; 当光纤以1550纳米的波长以20毫米的直径缠绕时，弯曲损耗不超过30dB / m。

26. 发明授权

US06983094B2 Optical fiber and optical transmission system using such optical fiber 失效
标题翻译：使用这种光纤的光纤和光传输系统
公开(公告)号：US06983094B2
公开(公告)日：2006-01-03
申请号：US10453893
申请日：2003-06-04
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/02
CPC分类号： G02B6/03644 , G02B6/02019 , G02B6/02242 , G02B6/02271 , G02B6/02285 , G02B6/0281 , G02B6/03611 , G02B6/03627 , G02B6/03633
摘要： An optical fiber comprising a core and a cladding characterized by a dispersion of 0 to 17 ps/nm/km, an effective area (Aeff) of 130 μm2 or more, a bending loss of 10 dB/m or less in a diameter of 20 mm, a dispersion slope of 0 ps/nm2/km to 0.08 db/nm2/km at a wavelength of 1550 nm, and a cutoff wavelength λc of a 2 m length of fiber of 1700 nm or shorter, is provided. The optical fiber and an optical transmission system of the present invention are suitable for the WDM transmission.
摘要翻译：一种包括芯和包层的光纤，其特征在于分散为0至17ps / nm / km，有效面积（Aeff）为130μm2以上，弯曲损耗为10dB / m或更小，在波长1550nm处的色散斜率为0ps / nm 2 / km至0.08db / nm 2 / km，并且提供了具有1700nm或更短的2m长纤维的截止波长兰德卡。本发明的光纤和光传输系统适用于WDM传输。

27. 发明授权

US06959136B2 Optical fiber and optical transmission line 有权
标题翻译：光纤和光传输线
公开(公告)号：US06959136B2
公开(公告)日：2005-10-25
申请号：US10613376
申请日：2003-07-03
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/036 , G02B6/02
CPC分类号： G02B6/03633 , G02B6/02019 , G02B6/02242 , G02B6/02266 , G02B6/02271 , G02B6/02276 , G02B6/02285 , G02B6/0281 , G02B6/0285 , G02B6/0286 , G02B6/03611 , G02B6/03627
摘要： The optical fiber has a dispersion value at a 1.55 μm-wavelength band, of 6 to 24 ps/nm/km, and satisfies A>3×D+40, where D represents a dispersion value (ps/nm/km) at a central wavelength of a 1.55 μm-wavelength band, and A represents an effective core area (μm2). The optical transmission line for transmitting an optical signal, which includes the optical fiber is provided as well.
摘要翻译：光纤在1.55μm波长带上具有6至24ps / nm / km的色散值，并且满足A> 3×D + 40，其中D表示中心波长处的色散值（ps / nm / km）为1.55μm波长带，A为有效核心区域（mum ^{2）。还提供了用于发送包括光纤的光信号的光传输线。}

28. 发明授权

US06859599B2 Optical fiber, and optical amplifier and transmission system including the optical fiber 有权
标题翻译：光纤，以及包括光纤的光放大器和传输系统
公开(公告)号：US06859599B2
公开(公告)日：2005-02-22
申请号：US10367866
申请日：2003-02-19
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/036 , G02F1/35 , H01S3/06 , H01S3/067 , H01S3/10 , H01S3/30 , G02B6/02
CPC分类号： G02B6/03644 , G02B6/02028 , G02B6/02242 , G02B6/02257 , G02B6/02271 , G02B6/0281 , G02B6/03627 , H01S3/06725 , H01S3/06729 , H01S3/06754 , H01S3/302
摘要： Optical fibers with high non-linearity and low dispersion suitable for the Raman amplification are offered. Their structural and characteristic specifics are as follows: first core 1 with α profile surrounded with second core 2, further second core surrounded with cladding 5; setting first core 1 for no less than 1.8% of relative refractive index difference from cladding 5; setting second core 2 for no more than −0.4% of relative refractive index difference from cladding 5, setting α for 1.5 or larger, making second core 2 at least 2.2 times as large as first core 1 in diameter; and an effective area of no more than 15 μm2, a dispersion slope of 0.05 ps/nm2/km or lower in absolute value, a dispersion of no less than 5 ps/nm/km and no more than 20 ps/nm/km, in absolute value, a cutoff wavelength of 1350 nm or shorter, and a bending loss of 5.0 dB or lower in a bending diameter of 20 mm, each at a wavelength of 1.55 μm.
摘要翻译：提供了具有高非线性度和适用于拉曼放大率的低色散的光纤。它们的结构和特征如下：具有由第二芯2包围的α型材的第一芯体1，被包层5包围的另外的第二芯体; 将第一芯1设置为不小于包层5的相对折射率差的1.8％; 将第二芯2设置为不超过包层5的相对折射率差的-0.4％，将α设置为1.5或更大，使得第二芯2的直径至少为第一芯1的2.2倍; 有效面积不超过15umum，绝对值为0.05ps / nm 2 / km以下的色散斜率，不小于5ps / nm / km且不大于20的色散 ps / nm / km，绝对值，截止波长为1350nm以下，弯曲直径为20mm的弯曲损耗为5.0mm以下，波长为1.55μm。

29. 发明授权

US6031955A Dispersion compensating optical fiber 失效
标题翻译：色散补偿光纤
公开(公告)号：US6031955A
公开(公告)日：2000-02-29
申请号：US37846
申请日：1998-03-10
申请人： Kazunori Mukasa , Yoshihisa Suzuki
发明人： Kazunori Mukasa , Yoshihisa Suzuki
IPC分类号： G02B6/036 , H04B10/25 , H04B10/2525 , G02B6/10
CPC分类号： G02B6/02261 , G02B6/0228 , G02B6/03627 , H04B10/25253
摘要： The present invention provides a dispersion compensating optical fiber, connected to a transmission single-mode optical fiber having zero dispersion in a 1.3-.mu.m wavelength band, for efficiently compensating for the dispersion of a light signal of a 1.55-.mu.m wavelength band. The refractive index configuration is such that the refractive index profile is a W type and that the dispersion value is a high negative value of not more than -80. The ratio Ra (Ra=a/b) of the diameter a of a core 1 and the diameter b of a side core 2 is set within a range of not less than 0.33 and not more than 0.37. The ratio DPS(SMF)/DPS(DCF) of a value DPS(SMF) obtained by dividing the dispersion value of the transmission single-mode optical fiber in the 1.55-.mu.m wavelength band by the dispersion slope of the transmission single-mode optical fiber in the 1.55-.mu.m wavelength to a value DPS(DCF) obtained by dividing the dispersion value of the dispersion compensating optical fiber in the 1.55-.mu.m wavelength band by the dispersion slope of the dispersion compensating optical fiber in the 1.55 .mu.m wavelength band is set within a range of not less than 0.95 and not more than 1.05.
摘要翻译：本发明提供了一种色散补偿光纤，其连接到在1.3μm波长带上具有零色散的透射单模光纤，用于有效地补偿1.55μm波段的光信号的色散。折射率构造使得折射率分布为W型，并且色散值为不大于-80的高负值。芯1的直径a和侧芯2的直径b的比Ra（Ra = a / b）设定在不小于0.33且不大于0.37的范围内。通过将传输单模光纤在1.55μm波长带中的色散值除以传输单模的色散斜率获得的值DPS（SMF）的比DPS（SMF）/ DPS（DCF）在1.55μm波长的光纤到通过将色散补偿光纤的色散值除以1.55μm波段的色散值得到的值DPS（DCF），其中色散补偿光纤的色散斜率在1.55μm m波长带设定在不小于0.95且不大于1.05的范围内。

30. 发明授权

US08811784B2 Optical fiber and optical transmission system 有权
标题翻译：光纤和光传输系统
公开(公告)号：US08811784B2
公开(公告)日：2014-08-19
申请号：US13602855
申请日：2012-09-04
申请人： Kazunori Mukasa
发明人： Kazunori Mukasa
IPC分类号： G02B6/32
CPC分类号： G02B6/02347 , G02B6/02333
摘要： An optical fiber that propagates light over a use wavelength bandwidth of 100 nm or wider in a plurality of propagation modes is provided. The optical fiber has: a confinement loss equal to or less than 1 dB/km in each of the plurality of propagation modes over the use wavelength bandwidth; and a bending loss equal to or less than 100 dB/m in each of the plurality of propagation modes over the use wavelength bandwidth when the optical fiber is bent at a diameter of 20 mm.
摘要翻译：提供了在多个传播模式中在100nm或更宽的使用波长带宽上传播光的光纤。光纤具有：在使用波长带宽上的多个传播模式中的每一个中的限制损耗等于或小于1dB / km; 以及当光纤以20mm的直径弯曲时，在使用波长带宽上的多个传播模式中的每一个中的弯曲损耗等于或小于100dB / m。

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