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41. 发明授权

US06805497B1 Optical transmission line 失效
标题翻译：光传输线
公开(公告)号：US06805497B1
公开(公告)日：2004-10-19
申请号：US09869698
申请日：2001-07-03
申请人： Shinji Ishikawa , Motonori Nakamura , Masao Tsukitani , Eisuke Sasaoka
发明人： Shinji Ishikawa , Motonori Nakamura , Masao Tsukitani , Eisuke Sasaoka
IPC分类号： G02B6255
CPC分类号： G02B6/03694 , G02B6/03627 , G02B6/2551 , G02B6/29376 , G02B6/29377
摘要： An optical transmission line including a portion formed by fusion-splicing optical fibers having structures different from each other; wherein, in the optical fibers having structures different from each other, a first optical fiber 1 has a mode field diameter smaller than that of a second optical fiber 2 fusion-spliced thereto; and wherein the first optical fiber 1 has an average viscosity from a center to an outermost layer greater than that of the second optical fiber from a center to an outermost layer.
摘要翻译：一种光传输线，包括通过熔接具有彼此不同结构的光纤而形成的部分; 其中，在具有彼此不同的结构的光纤中，第一光纤1的模场直径小于与其熔接的第二光纤2的模场直径; 并且其中第一光纤1具有从中心到最外层的从中心到最外层的平均粘度大于第二光纤的平均粘度。

42. 发明授权

US06701090B1 Wavelength division multiplexing signal number monitoring apparatus and method 失效
标题翻译：波分复用信号号码监控装置及方法
公开(公告)号：US06701090B1
公开(公告)日：2004-03-02
申请号：US09626158
申请日：2000-07-26
申请人： Hitoshi Hatayama , Eisuke Sasaoka
发明人： Hitoshi Hatayama , Eisuke Sasaoka
IPC分类号： H04J1402
CPC分类号： H04B10/077 , G02B6/12019 , H04B10/07955 , H04J14/02
摘要： Wavelength division multiplexing signal light is fed into an arrayed diffraction grating type optical demultiplexer, demultiplexed signal light components are outputted from a plurality of output ports, whether there is a signal light component or not is detected by each photodiode of a photodiode array, and a counter unit calculates the number of signals from the result of detection. Here, the output wavelength interval of &Dgr;&lgr;o of the output ports is set to &Dgr;&lgr;o=&Dgr;&lgr;i/m (where m is an integer of at least two) with respect to the signal wavelength interval &Dgr;&lgr;i of the wavelength division multiplexing signal light, whereas the photodiode array is sectioned into m photodiode array groups in which the output signal wavelength interval is &Dgr;&lgr;i.
摘要翻译：波分复用信号光被馈送到阵列衍射光栅型光解复用器中，从多个输出端口输出解复用的信号光分量，无论是否由光电二极管阵列的每个光电二极管检测到信号光分量，以及计数器单元根据检测结果计算信号数。这里，输出端口的Deltalambdao的输出波长间隔相对于波分复用信号光的信号波长间隔Deltalambdai被设置为Deltalambdao = Deltalambdai / m（其中m是至少为2的整数），而光电二极管阵列分为m个光电二极管阵列组，其中输出信号波长间隔为Deltalambdai。

43. 发明授权

US06618532B1 Optical transmission line 有权
标题翻译：光传输线
公开(公告)号：US06618532B1
公开(公告)日：2003-09-09
申请号：US09628510
申请日：2000-11-27
申请人： Eisuke Sasaoka , Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Takatoshi Kato
发明人： Eisuke Sasaoka , Shigeru Tanaka , Masayuki Nishimura , Shinji Ishikawa , Takatoshi Kato
IPC分类号： G02B602
CPC分类号： G02B6/02009 , C03B37/01205 , C03B37/027 , C03B2203/18 , C03B2203/36 , C03B2205/40 , C03B2205/47 , G02B6/02242 , G02B6/03627 , G02B6/03644 , G02B6/29377 , H04B10/25253
摘要： An optical transmission line having reduced flunctions in transmission quality is formed with a structure in which first and second waveguides whose transmission characteristics at a predetermined wavelength in a wavelength band in use are set opposite to each other and are arranged alternately. The chromatic dispersion of the first and second waveguides are set so as to have signs opposite to each other, and the dispersion slope of the first and second waveguides are set so as to have signs opposite to each other. Embodiments include setting the absolute value of chromatic dispersion in each first waveguide to 1 ps/nm/km or more but 10 ps/nm/km or less, and the absolute value of chromatic dispersion in each second waveguide is set to 1 ps/nm/km or more but 10 ps/nm/km or less.
摘要翻译：具有传输质量降低的光传输线路的形成是这样的结构，其中在使用中的波长带中的预定波长的传输特性彼此相对设置并交替布置的第一和第二波导。将第一和第二波导的色散设定为具有彼此相反的符号，并且将第一和第二波导的色散斜率设定为具有彼此相反的符号。实施例包括将每个第一波导中的色散的绝对值设置为1ps / nm / km或更大但10ps / nm / km或更小，并且将每个第二波导中的色散的绝对值设置为1ps / nm / km以上，10ps / nm / km以下。

44. 发明授权

US06487353B2 Dispersion-shifted optical fiber 失效
标题翻译：色散位移光纤
公开(公告)号：US06487353B2
公开(公告)日：2002-11-26
申请号：US09850055
申请日：2001-05-08
申请人： Takatoshi Kato , Eisuke Sasaoka , Masayuki Nishimura
发明人： Takatoshi Kato , Eisuke Sasaoka , Masayuki Nishimura
IPC分类号： G02B602
CPC分类号： G02B6/02014 , G02B6/02238 , G02B6/02252 , G02B6/03611 , G02B6/03627 , G02B6/03633 , G02B6/03644
摘要： The present invention relates to a dispersion-shifted optical fiber suitable for an optical transmission line having an optical fiber amplifier with a wider amplification band. In particular, the dispersion-shifted optical fiber according to the present invention has a zero-dispersion wavelength of 1610 nm or more but 1750 nm or less, and a cutoff wavelength of 1.1 &mgr;m or more at a length of 2 m in order to suppress the bending loss to a practically permissible range, and has, with respect to light having a wavelength of 1550 nm, an effective area of 45 &mgr;m2 or more and a dispersion slope of 0.15 ps/nm2/km or less in order to suppress the occurrence of nonlinear phenomena.
摘要翻译：本发明涉及一种适用于具有宽放大频带的光纤放大器的光传输线的色散位移光纤。特别地，根据本发明的色散位移光纤具有1610nm以上但1750nm以下的零色散波长，在2μm的长度下的截止波长为1.1μm以上，以抑制弯曲损耗达到实际允许的范围，并且对于波长为1550nm的光，为了抑制发生，有效面积为45mum2以上，色散斜率为0.15ps / nm2 / km以下的非线性现象。

45. 发明授权

US06473548B2 Multiple fiber optical cable and method of manufacturing multiple fiber optical cable 有权
标题翻译：多光纤光缆及多光纤光缆制造方法
公开(公告)号：US06473548B2
公开(公告)日：2002-10-29
申请号：US09726602
申请日：2000-12-01
申请人： Katsuya Nagayama , Kaoru Okuno , Eisuke Sasaoka , Masayuki Nishimura
发明人： Katsuya Nagayama , Kaoru Okuno , Eisuke Sasaoka , Masayuki Nishimura
IPC分类号： G02B6255
CPC分类号： G02B6/29376 , C03B37/0253 , C03B37/02763 , C03B2205/40 , C03B2205/72 , G02B6/02247 , G02B6/4403 , G02B6/4482
摘要： A multiple fiber optical cable includes bundled plural optical fibers. In each of the optical fibers to be bundled in the optical cable, a positive dispersion section having a positive chromatic dispersion in an optical signal wavelength and a negative dispersion section having a negative chromatic wavelength and a negative dispersion section having a negative chromatic dispersion section in the optical signal wavelength are alternately arranged so that the chromatic dispersion characteristic of the optical fiber alternately changes in the longitudinal direction. The chromatic dispersion characteristics of the respective bundled plural optical fibers coincide with each other at at least the position of each end of the multiple fiber optical cable. The member which surrounds the optical fibers of the optical cable is provided with the identification marks for identifying the chromatic dispersion characteristics at the individual locations in the longitudinal direction.
摘要翻译：多光纤光缆包括捆绑的多根光纤。在要捆扎在光缆中的每个光纤中，在光信号波长中具有正色散的正色散部分和具有负色散波长的负色散部分和具有负色散部分的负色散部分光信号波长交替排列，使得光纤的色散特性在纵向方向上交替变化。各捆束的多根光纤的色散特性至少在多根光纤光缆的两端的位置上一致。围绕光缆的光纤的构件设置有用于识别纵向方向上的各个位置处的色散特性的识别标记。

46. 发明授权

US06466721B1 Dispersion compensating optical fiber and optical transmission line 有权
标题翻译：色散补偿光纤和光传输线
公开(公告)号：US06466721B1
公开(公告)日：2002-10-15
申请号：US09618752
申请日：2000-07-18
申请人： Masao Tsukitani , Eisuke Sasaoka , Eiji Yanada , Yuichi Ohga
发明人： Masao Tsukitani , Eisuke Sasaoka , Eiji Yanada , Yuichi Ohga
IPC分类号： G02B622
CPC分类号： G02B6/03644 , G02B6/02019 , G02B6/02261 , G02B6/0228 , G02B6/0281 , G02B6/03627 , G02B6/29377
摘要： The present invention relates to an optical transmission line suitably used for a large-capacity high-speed WDM optical transmission system, and an optical fiber suitably used for such an optical transmission line. The optical transmission line is formed by connecting a single-mode optical fiber (SMF) and a dispersion compensating optical fiber (DCF). The dispersion compensating optical fiber has a dispersion value DDCF (unit: ps/nm/km) and dispersion slope SDCF (unit: ps/nm2/km) falling within the ranges of −82 ≦DDCF≦−29 and 0.0023×DDCF≦SDCF≦0.033+0.0015×DDCF at a wavelength of 1,550 nm, respectively. At the wavelength of 1,550 nm, the transmission loss is 0.5 dB/km or less. Letting LDCF be the length of the dispersion compensating optical fiber, and LSMF be the length of the single-mode optical fiber, the value LDCF/(LDCF+LSMF) in the optical transmission line is 0.2 to 0.4. This optical transmission line can suppress the nonlinear optical phenomenon and is suitable to long-distance large-capacity transmission because the optical transmission line has a small transmission loss and low nonlinear index.
摘要翻译：本发明涉及适用于大容量高速WDM光传输系统的光传输线，以及适用于这种光传输线的光纤。光传输线通过连接单模光纤（SMF）和色散补偿光纤（DCF）而形成。色散补偿光纤具有落在-82 <= DDCF <= - 29和0.0023×DDCF的范围内的色散值DDCF（单位：ps / nm / km）和色散斜率SDCF（单位：ps / nm2 / km） = SDCF <= 0.033 + 0.0015×DDCF，分别为1550nm波长。在1,550nm的波长下，传输损耗为0.5dB / km以下。使LDCF为色散补偿光纤的长度，LSMF为单模光纤的长度，光传输线路中的LDCF /（LDCF + LSMF）值为0.2〜0.4。该光传输线可以抑制非线性光学现象，适用于长距离大容量传输，因为光传输线路传输损耗小，非线性指数低。

47. 发明授权

US5883990A Low transmission loss optical fiber having a grating 失效
标题翻译：具有光栅的低透射损耗光纤
公开(公告)号：US5883990A
公开(公告)日：1999-03-16
申请号：US889954
申请日：1997-07-10
申请人： Eisuke Sasaoka , Masumi Ito , Masayuki Nishimura
发明人： Eisuke Sasaoka , Masumi Ito , Masayuki Nishimura
IPC分类号： G02B6/00 , G02B6/02 , G02B6/036 , G02B6/34
CPC分类号： G02B6/03627 , G02B6/021 , G02B6/02042
摘要： The present invention relates to an optical fiber grating as an optical component comprising an optical fiber having a core and a cladding, and a grating photowritten in the optical fiber. In particular, in the optical fiber grating in accordance with the present invention, the optical fiber into which the grating periodically changing the refractive index in the waveguide along the advancing direction of light is photowritten has a depressed cladding type refractive index profile. Accordingly, when the configuration of the optical fiber having a depressed cladding type refractive index, employed as the object in which the grating is photowritten, is changed, the stability in characteristics as the optical component or the like can easily be improved.
摘要翻译：本发明涉及作为光学部件的光纤光栅，该光学部件包括具有芯和包层的光纤，以及光纤中的光栅。具体地说，在本发明的光纤光栅中，沿着光的行进方向周期性地改变波导中的折射率的光纤是光复制的，具有凹陷的包层型折射率分布。因此，当作为光栅被复制的目的而使用具有凹陷包层型折射率的光纤的结构改变时，可以容易地提高作为光学部件等的特性的稳定性。

48. 发明授权

US5695540A Method of spacing fibers of optical fiber tapes and coupling the fibers 失效
标题翻译：隔开光纤带纤维间隔并连接纤维的方法
公开(公告)号：US5695540A
公开(公告)日：1997-12-09
申请号：US441304
申请日：1995-05-15
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
IPC分类号： G02B6/255 , G02B6/28 , C03B29/00
CPC分类号： G02B6/2835 , G02B6/2856 , G02B6/2551
摘要： Optical fibers are fixed to elongating tables by optical fiber fixing jigs. Coatings are removed from portions of the fibers and respective fibers of two different groups are placed into tight contact with one another. The fibers are then heated by a gas burner 4A so as to be welded integrally with each other, and are then elongated. In one preferred embodiment, the fibers are arranged such that there are gaps therebetween. These gaps are substantially 250 .mu.m. The gaps are sufficiently wide that heating gas flows in a manner such that all the optical fiber strands are heated uniformly to make it possible uniform welding and elongation.
摘要翻译：光纤通过光纤固定夹固定在伸长台上。从纤维的部分去除涂层，并且将两个不同组的相应纤维彼此紧密接触。然后通过气体燃烧器4A加热纤维，以便彼此整体焊接，然后被拉长。在一个优选实施例中，纤维布置成使得它们之间存在间隙。这些差距大致是250亩。间隙足够宽，使得加热气体以使得所有光纤线均匀地加热以使其可能均匀的焊接和伸长的方式流动。

49. 发明授权

US5438640A Optical waveguide device for receiving functional component 失效
标题翻译：用于接收功能元件的光波导器件
公开(公告)号：US5438640A
公开(公告)日：1995-08-01
申请号：US225716
申请日：1994-04-08
申请人： Eisuke Sasaoka , Hiroo Kanamori , Hiroshi Suganuma , Shinji Ishikawa , Tatsuhiko Saito
发明人： Eisuke Sasaoka , Hiroo Kanamori , Hiroshi Suganuma , Shinji Ishikawa , Tatsuhiko Saito
IPC分类号： G02B6/125 , G02B6/26 , G02B6/28
CPC分类号： G02B6/264 , G02B6/125 , G02B6/262 , G02B6/2817
摘要： The present invention comprises a waveguide substrate and an optical waveguide disposed on the substrate, the optical waveguide having an optical waveguide region as a light transmission path, an insertion region for inserting an optical functional component having a mode field width of light propagating therein larger than that of light propagating in the optical waveguide region, and an optical connection region provided between the optical waveguide region and the insertion region to change a mode field width of light propagating therein.
摘要翻译：本发明包括设置在基板上的波导基板和光波导，光波导具有光波导区域作为光传输路径，插入区域用于插入具有在其中传播的光的模场宽度的光功能元件，在光波导区域中传播的光和在光波导区域和插入区域之间设置的光连接区域，以改变在其中传播的光的模场宽度。

50. 发明授权

US5417734A Method of producing optical fiber couplers using rectifier rods to provide even heat distribution 失效
标题翻译：使用整流棒制造光纤耦合器以提供均匀散热的方法
公开(公告)号：US5417734A
公开(公告)日：1995-05-23
申请号：US145509
申请日：1993-11-04
申请人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
发明人： Hiroshi Suganuma , Tomoyuki Hattori , Hiroaki Takimoto , Eisuke Sasaoka , Hiroshi Yokota , Kenichi Matsushita
IPC分类号： G02B6/255 , G02B6/28 , G02B6/287
CPC分类号： G02B6/2835 , G02B6/2856 , G02B6/2551
摘要： Optical fibers are fixed to elongating tables by optical fiber fixing jigs. Coatings are removed from portions of the fibers and respective fibers of two different groups are placed into tight contact with one another. Rectifier rods, supported movably by rectifier rod supporting members, are disposed outside the optical fiber strands. The fibers are then heated by a gas burner 4A so as to be welded integrally with each other, and are then elongated. By using rectifier rods, the outside optical fiber strands of the groups being welded are not so strongly heated that uniform welding and elongation can be realized. In one preferred embodiment, the fibers are arranged such that there are gaps therebetween. These gaps are substantially 250 .mu.m. The gaps are sufficiently wide that heating gas flows in a manner such that all the optical fiber strands are heated uniformly to make it possible uniform welding and elongation.
摘要翻译：光纤通过光纤固定夹固定在伸长台上。从纤维的部分去除涂层，并且将两个不同组的相应纤维彼此紧密接触。由整流棒支撑件可移动地支撑的整流棒设置在光纤线束的外部。然后通过气体燃烧器4A加热纤维，以便彼此整体焊接，然后被拉长。通过使用整流棒，被焊接的组的外部光纤线束不会被强烈加热，从而可以实现均匀的焊接和伸长。在一个优选实施例中，纤维布置成使得它们之间存在间隙。这些差距大致是250亩。间隙足够宽，使得加热气体以使得所有光纤线均匀地加热以使其可能均匀的焊接和伸长的方式流动。

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