公开(公告)号：US08805146B2

公开(公告)日：2014-08-12

申请号：US13009874

申请日：2011-01-20

Applicant: Eisuke Sasaoka

Inventor： Eisuke Sasaoka

IPC: G02B6/36

CPC classification number: G02B6/02042 ,  G02B6/105

Abstract: The present invention relates to a multicore optical fiber having a structure for effectively inhibiting polarization mode dispersion from increasing, and the multicore optical fiber comprises a plurality of multicore units and a cladding region integrally covering the plurality of multicore units while separating the multicore units from each other. Each of the plurality of multicore units includes a plurality of core regions arranged such as to construct a predetermined core arrangement structure on a cross section orthogonal to an axis. The core arrangement structure of each multicore unit on the cross section has such a rotational symmetry as to coincide with the unrotated core arrangement structure at least three times while rotating by 360° about a center of the multicore unit, thereby reducing the structural asymmetry of each multicore unit. This lowers the structural birefringence in each multicore unit, thereby inhibiting the polarization mode dispersion from increasing in the multicore optical fiber.

Abstract translation: 本发明涉及一种具有有效抑制偏振模色散的结构的多芯光纤的增加，多芯光纤包括多个多芯单元和一个覆盖多个多核单元的包层区，同时将多核单元与每个多核单元分离 其他。 多个多芯单元中的每一个包括多个芯区域，其布置成在垂直于轴线的横截面上构造预定的芯布置结构。 横截面上的每个多芯单元的核心布置结构具有这样的旋转对称性，即与未旋转的芯排列结构一致，至少三次，同时围绕多芯单元的中心旋转360°，从而减少每个多轴单元的结构不对称性 多核单位 这降低了每个多芯单元中的结构双折射，从而抑制了多芯光纤中的偏振模色散增加。

公开(公告)号：US20120168017A1

公开(公告)日：2012-07-05

申请号：US13417747

申请日：2012-03-12

Applicant: Eisuke SASAOKA

Inventor： Eisuke SASAOKA

IPC: B01D35/02

CPC classification number: A01G27/005

Abstract: The present invention relates to a liquid conveying device and the like having a structure which liquid conveying can be performed to a sufficient height, while requiring no energy for liquid conveying and having a high degree of freedom of arrangement. The liquid conveying device 1 comprises a liquid conveying pipe 10, and a filter 20. The liquid conveying pipe 10 includes a minute tube having a through hole with a substantially uniform inner diameter over the whole longitudinal length thereof. The filter 20 has a mesh size smaller than the inner diameter of the through hole of the minute tube. When supplied to a first end of the liquid conveying pipe 10, a liquid passed through pores of the filter 20 is guided from the first end to a second end of the liquid conveying pipe 10 by a capillary action in the through hole.

Abstract translation: 液体输送装置本发明涉及一种液体输送装置等，其具有能够进行液体输送到足够的高度的结构，同时不需要液体输送的能量并且具有高度的排列自由度。 液体输送装置1包括液体输送管10和过滤器20.液体输送管10包括具有在其整个纵向长度上具有基本均匀内径的通孔的微管。 过滤器20的网眼尺寸小于分管的通孔的内径。 当供给到液体输送管10的第一端时，通过过滤器20的孔的液体通过通孔中的毛细作用从液体输送管10的第一端引导到第二端。

公开(公告)号：US20120148258A1

公开(公告)日：2012-06-14

申请号：US13371835

申请日：2012-02-13

Applicant: Eisuke SASAOKA ,  Kazuya Kuwahara

Inventor： Eisuke SASAOKA ,  Kazuya Kuwahara

IPC: H04B10/12

CPC classification number: G02B6/02019 ,  G02B6/0365 ,  H04B10/2916

Abstract: The present invention relates to an optical communications system that allows improving OSNR while suppressing the power increase of pumping light for distributed Raman amplification. In the optical communications system, an optical fiber is laid in a transmission section between a transmitter station (or repeater station) and a receiver station (or repeater station), and optical signals are transmitted from the transmitter station to the receiver station via the optical fiber. In the optical communications system, pumping light for Raman amplification, outputted by a pumping light source provided in the receiver station, is fed into the optical fiber via an optical coupler, and the optical signals are distributed-Raman-amplified in the optical fiber. The transmission loss and the effective area of the optical fiber satisfy, at the wavelength of 1550 nm, a predetermined relationship.

Abstract translation: 本发明涉及一种允许改善OSNR同时抑制用于分布式拉曼放大的泵浦光功率增加的光通信系统。 在光通信系统中，光纤被放置在发射台（或中继站）和接收站（或中继站）之间的传输部分中，并且光信号经由光信号从发射台发射到接收站 纤维。 在光通信系统中，由接收站中提供的泵浦光源输出的用于拉曼放大的泵浦光通过光耦合器馈送到光纤中，并且光信号在光纤中被分布拉曼放大。 光纤的传输损耗和有效面积在1550nm的波长下满足预定的关系。

公开(公告)号：US07995198B2

公开(公告)日：2011-08-09

申请号：US12438464

申请日：2007-08-21

Applicant: Eisuke Sasaoka ,  Yoshinori Yamamoto

Inventor： Eisuke Sasaoka ,  Yoshinori Yamamoto

IPC: G01N21/00

CPC classification number: G01B11/18 ,  G01D5/35348 ,  G01K11/32 ,  G01K2011/322 ,  G01M11/083 ,  G01M11/39

Abstract: The present invention relates to an optical fiber characteristic distribution sensor comprising a structure to effectively reduce the measurement errors of position in the temperature distribution measurement etc. The sensor comprises an optical fiber section, part of which is installed in an object to be measured and to which probe light and pumping light are inputted in opposite directions. The optical fiber section includes a marker portion where data relating to the shape of a BGS in the maker has been preliminarily measured in a state where the optical fiber section is installed in a normal state. At the time of calculating the characteristic distribution in the longitudinal direction of the optical fiber section while measuring the data relating to the BGS shape, the errors of the calculated gain occurrence position are corrected, for example, by shifting the scanning range of phase difference between the probe light and the pumping light. The amount of shift of the scanning range of phase difference is given based on a difference value between the phase difference at the time of measurement when the BGS that reflects the gain that has occurred in the marker portion is measured, and the reference phase difference when data relating to the already known shape of the BGS in the marker portion has been preliminarily measured.

Abstract translation: 本发明涉及一种光纤特性分布传感器，包括有效降低温度分布测量等中位置的测量误差的结构。传感器包括光纤部分，其一部分安装在待测物体中，并且 探测光和泵浦光的方向相反。 光纤部分包括在光纤部分安装在正常状态的状态下已经预先测量了与制造商中的BGS的形状相关的数据的标记部分。 在测量与BGS形状相关的数据的同时计算光纤部分的纵向方向上的特性分布时，计算出的增益发生位置的误差被校正，例如通过将相位差的扫描范围 探头灯和抽光灯。 基于当测量反映在标记部分中发生的增益的BGS时的测量时的相位差之间的差值以及基准相位差，给出相位差的扫描范围的偏移量 已经预先测量了与标记部中的BGS的已知形状有关的数据。

公开(公告)号：US20110044700A1

公开(公告)日：2011-02-24

申请号：US12850669

申请日：2010-08-05

Applicant: EISUKE SASAOKA ,  KAZUYA KUWAHARA

Inventor： EISUKE SASAOKA ,  KAZUYA KUWAHARA

IPC: H04B10/12

CPC classification number: G02B6/02019 ,  G02B6/0365 ,  H04B10/2916

Abstract: The present invention relates to an optical communications system that allows improving OSNR while suppressing the power increase of pumping light for distributed Raman amplification. In the optical communications system, an optical fiber is laid in a transmission section between a transmitter station (or repeater station) and a receiver station (or repeater station), and optical signals are transmitted from the transmitter station to the receiver station via the optical fiber. In the optical communications system, pumping light for Raman amplification, outputted by a pumping light source provided in the receiver station, is fed into the optical fiber via an optical coupler, and the optical signals are distributed-Raman-amplified in the optical fiber. The transmission loss and the effective area of the optical fiber satisfy, at the wavelength of 1550 nm, a predetermined relationship.

Abstract translation: 本发明涉及一种允许改善OSNR同时抑制用于分布式拉曼放大的泵浦光功率增加的光通信系统。 在光通信系统中，光纤被放置在发射台（或中继站）和接收站（或中继站）之间的传输部分中，并且光信号经由光信号从发射台发射到接收站 纤维。 在光通信系统中，由接收站中提供的泵浦光源输出的用于拉曼放大的泵浦光通过光耦合器馈送到光纤中，并且光信号在光纤中被分布拉曼放大。 光纤的传输损耗和有效面积在1550nm的波长下满足预定的关系。

公开(公告)号：US20110008058A1

公开(公告)日：2011-01-13

申请号：US12922100

申请日：2009-02-13

Applicant: Eisuke Sasaoka

Inventor： Eisuke Sasaoka

IPC: H04B10/12

CPC classification number: G02B6/02328

Abstract: The present invention relates to an optical communications system equipped with a structure, capable of applying a PBGF as an optical transmission line, by which high capacity information transmission is enabled by use of the PBGF. The optical communications system (1) is provided with an optical transmitter (10), an optical receiver (20) and an optical transmission line (30). The optical transmitter (10) outputs signal light, whose phase or optical frequency is modulated, into the optical transmission line (30). The optical transmission line (30) transmits the signal light outputted from the optical transmitter (10) to the optical receiver (20). The optical receiver (20) receives the signal light transmitted from the optical transmitter (10) via the optical transmission line (30). The optical transmission line (30) includes a photonic band gap fiber having a hollow core.

Abstract translation: 本发明涉及一种具有能够应用PBGF作为光传输线路的结构的光通信系统，通过使用PBGF可实现高容量信息传输。 光通信系统（1）设置有光发射机（10），光接收机（20）和光传输线路（30）。 光发送器（10）将其相位或光频率被调制的信号光输出到光传输线（30）中。 光传输线（30）将从光发射器（10）输出的信号光发送到光接收器（20）。 光接收器（20）经由光传输线（30）接收从光发射机（10）发射的信号光。 光传输线（30）包括具有中空芯的光子带隙光纤。

公开(公告)号：US20100183272A1

公开(公告)日：2010-07-22

申请号：US12689596

申请日：2010-01-19

Applicant: Eisuke SASAOKA

Inventor： Eisuke SASAOKA

IPC: G02B6/02

CPC classification number: G02B6/02 ,  G02B6/02342 ,  G02B6/03633 ,  G02B6/03694

Abstract: The present invention relates to an optical fiber having a structure to enable both prevention of resin coating combustion due to leaked light, and low-loss light transmission. The optical fiber comprises a core region, and a cladding region. The cladding region is constituted by an optical cladding which affects the transmission characteristics of light propagating in the core region, and a physical cladding which does not affect the transmission characteristics of light propagating in the core region. Particularly, a leakage reduction portion is provided in the physical cladding so as to surround an outer periphery of the core region through the optical cladding. The leakage reduction portion functions to suppress propagation of the leaked light propagating from the core region toward outside the cladding region.

Abstract translation: 本发明涉及具有能够防止由于漏光引起的树脂涂层燃烧和低损耗光透射的结构的光纤。 光纤包括芯区域和包层区域。 包层区域由影响在芯区域中传播的光的透射特性的光学包层以及不影响在芯区域中传播的光的透射特性的物理包层构成。 特别地，在物理包层中设置泄漏减少部分，以便通过光学包层围绕芯区域的外围。 泄漏减少部用于抑制从芯区域向包层区域外侧传播的泄漏光的传播。

公开(公告)号：US20100092127A1

公开(公告)日：2010-04-15

申请号：US12443113

申请日：2007-09-19

Applicant: Eisuke Sasaoka ,  Yoshinori Yamamoto

Inventor： Eisuke Sasaoka ,  Yoshinori Yamamoto

IPC: G01N21/00 ,  G02B6/00 ,  G01D5/353 ,  G01K11/32

CPC classification number: G01K11/32 ,  G01D5/35348 ,  G01L1/242 ,  G01M11/085

Abstract: The present invention relates to an optical fiber distribution type detecting method and the like equipped with a structure for enabling efficient measurement of a temperature distribution or strain distribution. This method regulates a modulation frequency and modulation index for probe light and pumping light opposingly incident on an object from a light source and a phase difference between the probe light and pumping light, thereby successively setting the length and location of search domains in a region to be measured. In particular, a detection process is executed while resetting the search domain length shorter at a predetermined interval of time or when an abnormality is detected. Thus partly changing the distance resolution for a specific region in the course of the detection process enables efficient measurement operations in a short time.

Abstract translation: 本发明涉及一种配备有能够有效测量温度分布或应变分布的结构的光纤分布型检测方法等。 该方法调节从光源反射入射到物体上的探测光和泵浦光的调制频率和调制指数以及探测光和泵浦光之间的相位差，从而将区域中的搜索域的长度和位置依次设置为 被测量。 特别地，在以预定的时间间隔或当检测到异常时将搜索域长度更短地重置时，执行检测处理。 因此，在检测过程中部分地改变特定区域的距离分辨率能够在短时间内进行有效的测量操作。

公开(公告)号：US07534031B2

公开(公告)日：2009-05-19

申请号：US11791365

申请日：2006-10-05

Applicant: Yoshinori Yamamoto ,  Itaru Sakabe ,  Eisuke Sasaoka

Inventor： Yoshinori Yamamoto ,  Itaru Sakabe ,  Eisuke Sasaoka

IPC: G01J5/00

CPC classification number: G01K11/32

Abstract: The temperature measuring device of the present invention comprises: a light source for outputting light; an optical fiber to which light outputted by the light source is inputted and from which Brillouin scattered light is outputted; a detection unit for detecting a spectrum of the Brillouin scattered light; a judgment unit for judging whether or not a frequency shift of the spectrum of the Brillouin scattered light detected by the detection unit belongs to a specific region in which the rate of change of the frequency shift with respect to the temperature of the optical fiber is smaller than a predetermined value; and an analysis unit for, when the judgment unit judges that the frequency shift does not belong to the specific region, analyzing the temperature in use of the frequency shift, and for, when the judgment unit judges that the frequency shift belongs to the specific region, not performing analysis, or analyzing the temperature in use of at least the linewidth of the spectrum of the Brillouin scattered light detected by the detection means.

Abstract translation: 本发明的温度测量装置包括：用于输出光的光源; 输入光源输出的光并输出布里渊散射光的光纤; 用于检测布里渊散射光的光谱的检测单元; 判断单元，用于判断由检测单元检测到的布里渊散射光的频谱的频移是否属于频移相对于光纤的温度的变化率较小的特定区域 超过预定值; 以及分析单元，用于当判断单元判定频移不属于特定区域时，分析使用频移的温度，并且当判断单元判断频移属于特定区域时 ，不进行分析，或分析至少使用由检测装置检测的布里渊散射光的光谱的线宽的温度。

公开(公告)号：US20060245689A1

公开(公告)日：2006-11-02

申请号：US11452958

申请日：2006-06-15

Applicant: Masao Tsukitani ,  Eisuke Sasaoka ,  Toshiaki Okuno

Inventor： Masao Tsukitani ,  Eisuke Sasaoka ,  Toshiaki Okuno

IPC: G02B6/28

CPC classification number: G02B6/02223 ,  G02B6/02242 ,  G02B6/02261 ,  G02B6/03627 ,  G02B6/03633 ,  G02B6/03644 ,  G02B6/29317 ,  G02B6/29377 ,  G02B6/29394 ,  H04B10/25133 ,  H04B10/291 ,  H04B2210/258

Abstract: In the dispersion-compensating system of the present invention, a demultiplexer demultiplexes optical signals in a signal wavelength band of 1520 nm to 1620 nm propagating through a first common transmission line into C band (1520 nm to 1565 nm) and L band (1565 nm to 1620 nm). Then, the demultiplexer outputs the optical signals of C band into a first branched transmission line and the optical signals of L band into a second branched transmission line. A first dispersion-compensating device is provided on the first common transmission line and compensates for the dispersion in C and L bands. A second dispersion-compensating device is provided on the second branched transmission line and compensates for the dispersion in L band, which has not fully been compensated for by the first dispersion-compensating device. Hence, the dispersion of optical transmission line can fully be reduced in a wide signal light wavelength band.