公开(公告)号：US06807322B2

公开(公告)日：2004-10-19

申请号：US10367994

申请日：2003-02-19

申请人： Masakazu Takabayashi ,  Sadayuki Matsumoto ,  Kiichi Yoshiara ,  Takuya Ohira ,  Junichiro Hoshizaki ,  Shigeru Matsuno ,  Ryosuke Namiki ,  Minoru Hashimoto

发明人： Masakazu Takabayashi ,  Sadayuki Matsumoto ,  Kiichi Yoshiara ,  Takuya Ohira ,  Junichiro Hoshizaki ,  Shigeru Matsuno ,  Ryosuke Namiki ,  Minoru Hashimoto

IPC分类号： G02B600

CPC分类号： G02B6/278 ,  G02B6/022 ,  G02B6/02204 ,  G02B6/2932 ,  G02B6/4246 ,  H04B10/2569

摘要： In a polarization mode dispersion compensating apparatus for controlling polarization mode dispersion of an optical signal, a first optical monitor detects and outputs, based on an optical signal outputted from a first optical transmission line having a grating, a first detection signal indicating magnitude of waveform distortion of the first optical transmission line, and a second optical monitor detects and outputs, based on an optical signal output from a second optical transmission line having a grating, a second detection signal indicating magnitude of waveform distortion of the second optical transmission line. A calculator circuit calculates from the first and second detection signals an output signal. A controller controls a polarization controller based on the output signal from the calculator circuit.

摘要翻译： 在用于控制光信号的偏振模色散的偏振模色散补偿装置中，第一光监视器基于从具有光栅的第一光传输线输出的光信号检测并输出表示波形失真大小的第一检测信号 并且第二光学监视器基于从具有光栅的第二光传输线输出的光信号检测并输出表示第二光传输线的波形失真的大小的第二检测信号。 计算器电路根据第一和第二检测信号计算输出信号。 控制器基于来自计算器电路的输出信号控制偏振控制器。

公开(公告)号：US06810179B2

公开(公告)日：2004-10-26

申请号：US10305157

申请日：2002-11-27

申请人： Takuya Ohira ,  Sadayuki Matsumoto ,  Kiichi Yoshiara ,  Masakazu Takabayashi ,  Junichiro Hoshizaki ,  Shigeru Matsuno ,  Ryosuke Namiki ,  Takashi Hashimoto

发明人： Takuya Ohira ,  Sadayuki Matsumoto ,  Kiichi Yoshiara ,  Masakazu Takabayashi ,  Junichiro Hoshizaki ,  Shigeru Matsuno ,  Ryosuke Namiki ,  Takashi Hashimoto

IPC分类号： G02B634

CPC分类号： G02B6/278 ,  G02B6/2932 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/29398

摘要： A variable dispersion compensator includes an optical waveguide, a temperature controller. The optical waveguide has a chirped grating having a Bragg wavelength changing along the longitudinal direction of the grating. A temperature distribution T1(x) is applied to a central portion of the grating, defined as a region where a distance x from an end of the grating is a range of 20 % to 80 % of total length of the grating. Temperature distribution T2(x) and T3(x) are applied to end portions of the grating, defined as two regions extending from respective ends of the grating to the central region, respectively. At least one of T2(x) and T3(x) has a distance dependence different from that of the T1(x).

摘要翻译： 可变色散补偿器包括光波导，温度控制器。 光波导具有沿着光栅的纵向方向改变的布拉格波长的啁啾光栅。 将温度分布T1（x）施加到光栅的中心部分，其被定义为距离光栅末端的距离x为光栅总长度的20％至80％的范围的区域。 温度分布T2（x）和T3（x）被施加到光栅的端部，其被定义为分别从光栅的两端延伸到中心区域的两个区域。 T2（x）和T3（x）中的至少一个具有与T1（x）不同的距离依赖性。

公开(公告)号：US06690860B2

公开(公告)日：2004-02-10

申请号：US09891319

申请日：2001-06-27

申请人： Sadayuki Matsumoto ,  Takuya Ohira ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Shigeru Matsuno ,  Hajime Takeya ,  Junichiro Hoshizaki

发明人： Sadayuki Matsumoto ,  Takuya Ohira ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Shigeru Matsuno ,  Hajime Takeya ,  Junichiro Hoshizaki

IPC分类号： G02B634

CPC分类号： G02B6/02152 ,  G02B6/02142

摘要： A method of manufacturing a grating in an optical waveguide that includes a core and a cladding covering the core. The method includes scanning a laser beam along an optical axis of the optical waveguide to modulate the refractive index of the core. The core is made of a material having a refractive index that is changeable upon irradiation by radiation. In addition, in scanning the core, the irradiation range of the laser beam is controlled and the core is scanned several times. Therefore, a predetermined distribution of irradiation is obtained in a direction of the optical axis of the grating.

摘要翻译： 一种在光波导中制造光栅的方法，该光波导包括芯和覆盖芯的包层。 该方法包括沿着光波导的光轴扫描激光束以调制芯的折射率。 芯由具有在辐射照射时可变化的折射率的材料制成。 此外，在扫描芯时，控制激光束的照射范围，并将核心扫描多次。 因此，在光栅的光轴的方向上获得预定的照射分布。

公开(公告)号：US06882760B2

公开(公告)日：2005-04-19

申请号：US10362760

申请日：2001-06-29

申请人： Masakazu Takabayashi ,  Sadayuki Matsumoto ,  Takuya Ohira ,  Kiichi Yoshiara ,  Junichiro Hoshizaki ,  Hajime Takeya ,  Shigeru Matsuno

发明人： Masakazu Takabayashi ,  Sadayuki Matsumoto ,  Takuya Ohira ,  Kiichi Yoshiara ,  Junichiro Hoshizaki ,  Hajime Takeya ,  Shigeru Matsuno

IPC分类号： G02F1/01 ,  G02F1/03 ,  G02F1/225 ,  H04B10/2507 ,  G02B6/12 ,  H04B10/18

CPC分类号： H04B10/2572 ,  G02F1/0136 ,  G02F1/0147 ,  G02F1/0305 ,  G02F1/0316 ,  G02F1/225

摘要： A polarization dispersion compensation apparatus includes a polarization controller, a polarization beam splitter, an optical delay circuit, and a polarization beam combiner. The polarization controller controls polarization of an optical signal so that the polarization axis of the input optical signal substantially coincides with the optical axis of an optical transmission line, and the polarization beam splitter section splits the optical signal into two polarized components perpendicular to each other. The optical delay circuit section causes a difference in delay between the two polarized components, and the polarization beam combiner section combines the two polarized components output from the optical delay circuit section. Each of the polarization beam splitter section and the polarization beam combiner section includes a symmetric Mach-Zehnder interferometer having optical transmission lines in two arms, each arm including a temperature control and a birefringence portion for compensating polarization dispersion between the two polarized components.

摘要翻译： 偏振色散补偿装置包括偏振控制器，偏振分束器，光延迟电路和偏振束组合器。 偏振控制器控制光信号的偏振，使得输入光信号的偏振轴基本上与光传输线的光轴重合，并且偏振分束器部分将光信号分离成彼此垂直的两个偏振分量。 光延迟电路部分导致两个极化分量之间的延迟差异，并且偏振束组合器部分组合从光延迟电路部分输出的两个偏振分量。 偏振分束器部分和偏振束组合器部分中的每一个包括具有两个臂中的光传输线的对称马赫 - 曾德干涉仪，每个臂包括用于补偿两个偏振分量之间的偏振分散的温度控制和双折射部分。

公开(公告)号：US06643430B2

公开(公告)日：2003-11-04

申请号：US09891334

申请日：2001-06-27

申请人： Sadayuki Matsumoto ,  Takuya Ohira ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Shigeru Matsuno ,  Hajime Takeya ,  Junichiro Hoshizaki

发明人： Sadayuki Matsumoto ,  Takuya Ohira ,  Masakazu Takabayashi ,  Kiichi Yoshiara ,  Shigeru Matsuno ,  Hajime Takeya ,  Junichiro Hoshizaki

IPC分类号： G02B634

CPC分类号： G02B6/02204 ,  G02B6/02085 ,  G02B6/29394

摘要： A temperature control device for controlling temperature variable devices disposed near a grating of a variable dispersion equalizer including an optical waveguide having the grating. The temperature variable devices control temperatures independently of each other. The temperature control device includes a controller for controlling the temperature variable units, and a storage device which stores temperature control patterns including combinations of control signals for the respective temperature variable units. The controller controls the temperature variable devices with a control signal of at least one of the temperature control patterns selected from the storage device.

摘要翻译： 一种温度控制装置，用于控制设置在包括具有该光栅的光波导的可变色散均衡器附近的温度可变装置。 温度可变装置相互独立地控制温度。 温度控制装置包括用于控制温度可变单元的控制器，以及存储包括各个温度可变单元的控制信号的组合的温度控制模式的存储装置。 控制器使用从存储装置中选择的至少一个温度控制模式的控制信号来控制温度可变装置。

公开(公告)号：US06522809B1

公开(公告)日：2003-02-18

申请号：US09640000

申请日：2000-08-17

申请人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Sadayuki Matsumoto ,  Junichiro Hoshizaki ,  Takeyuki Maegawa ,  Hajime Takeya ,  Kiyohide Sakai ,  Minoru Hashimoto ,  Fusaoki Uchikawa

发明人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Sadayuki Matsumoto ,  Junichiro Hoshizaki ,  Takeyuki Maegawa ,  Hajime Takeya ,  Kiyohide Sakai ,  Minoru Hashimoto ,  Fusaoki Uchikawa

IPC分类号： G02B634

CPC分类号： G02B6/022 ,  G02B6/124

摘要： A waveguide grating device controlling Bragg wavelength after manufacture of the device includes an optical waveguide on a substrate. A variable stress is applied to a waveguide grating in part of the waveguide to bend at least the portion of the substrate including the waveguide grating, changing the Bragg wavelength.

摘要翻译： 在器件制造之后控制布拉格波长的波导光栅器件包括在衬底上的光波导。 在波导的一部分中的波导光栅上施加可变应力以使包括波导光栅的至少一部分基板弯曲，从而改变布拉格波长。

公开(公告)号：US07379640B2

公开(公告)日：2008-05-27

申请号：US11410925

申请日：2006-04-26

申请人： Sadayuki Matsumoto ,  Yasuhisa Shimakura ,  Kiichi Yoshiara ,  Masakazu Takabayashi

发明人： Sadayuki Matsumoto ,  Yasuhisa Shimakura ,  Kiichi Yoshiara ,  Masakazu Takabayashi

IPC分类号： G02B6/34

CPC分类号： G02F1/0115 ,  G02B6/29322 ,  G02B6/29394 ,  G02B6/29395 ,  G02F1/0147 ,  G02F2201/30

摘要： A tunable dispersion compensator in which a heater portion can be easily constructed to reduce cost. A tunable dispersion compensator includes: an optical fiber having a grating portion; a heating unit for heating the grating portion to apply a temperature distribution to the grating portion; and a control unit for controlling the temperature distribution applied by the heating unit to control the group delay time characteristic of the grating portion. The heating unit includes: a heater including a single conductor having electrical resistors and which extends in a longitudinal direction of the grating portion over at least the entire length of the grating portion; and wirings electrically connected with the heater in respective positions along the longitudinal direction. The control unit supplies a voltage to each of the wirings.

摘要翻译： 可调谐色散补偿器，其中可以容易地构造加热器部分以降低成本。 可调谐色散补偿器包括：具有光栅部分的光纤; 加热单元，用于加热光栅部分以向光栅部分施加温度分布; 以及控制单元，用于控制由加热单元施加的温度分布，以控制光栅部分的群延迟时间特性。 加热单元包括：加热器，其包括具有电阻器的单个导体，并且在光栅部分的至少整个长度上沿光栅部分的纵向方向延伸; 以及沿着纵向在相应位置与加热器电连接的布线。 控制单元向每个配线提供电压。

公开(公告)号：US20060280397A1

公开(公告)日：2006-12-14

申请号：US11410925

申请日：2006-04-26

申请人： Sadayuki Matsumoto ,  Yasuhisa Shimakura ,  Kiichi Yoshiara ,  Masakazu Takabayashi

发明人： Sadayuki Matsumoto ,  Yasuhisa Shimakura ,  Kiichi Yoshiara ,  Masakazu Takabayashi

IPC分类号： G02F1/295 ,  G02B6/34

CPC分类号： G02F1/0115 ,  G02B6/29322 ,  G02B6/29394 ,  G02B6/29395 ,  G02F1/0147 ,  G02F2201/30

摘要： A tunable dispersion compensator in which a heater portion can be easily constructed to reduce cost. A tunable dispersion compensator includes: an optical fiber having a grating portion; a heating unit for heating the grating portion to apply a temperature distribution to the grating portion; and a control unit for controlling the temperature distribution applied by the heating unit to control the group delay time characteristic of the grating portion. The heating unit includes: a heater including a single conductor having electrical resistors and which extends in a longitudinal direction of the grating portion over at least the entire length of the grating portion; and wirings electrically connected with the heater in respective positions along the longitudinal direction. The control unit supplies a voltage to each of the wirings.

摘要翻译： 可调谐色散补偿器，其中可以容易地构造加热器部分以降低成本。 可调谐色散补偿器包括：具有光栅部分的光纤; 加热单元，用于加热光栅部分以向光栅部分施加温度分布; 以及控制单元，用于控制由加热单元施加的温度分布，以控制光栅部分的群延迟时间特性。 加热单元包括：加热器，其包括具有电阻器的单个导体，并且在光栅部分的至少整个长度上沿光栅部分的纵向方向延伸; 以及沿着纵向在相应位置与加热器电连接的布线。 控制单元向每个配线提供电压。

公开(公告)号：US07672544B2

公开(公告)日：2010-03-02

申请号：US11914271

申请日：2006-05-22

申请人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

发明人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

IPC分类号： G02B6/00

CPC分类号： B60K15/077 ,  B60K2015/03217 ,  G01F23/292 ,  G01F23/2925 ,  G01N21/8507

摘要： An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, the optical fiber being disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is generated by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

摘要翻译： 即使在频繁的振动环境下也能够高度可靠地检测液位或检测液体的性质的光纤传感器。 光纤传感器包括光纤，其包括具有形成光栅的区域的芯和包层，光纤被布置成使得具有光栅的区域的至少一部分浸没在液体中，光源用于 使光入射到光纤，使得由光栅产生具有波长带的包层模式光;以及光接收单元，用于检测从光源入射到光纤并透射通过光栅的光的强度 。

公开(公告)号：US20090034901A1

公开(公告)日：2009-02-05

申请号：US11914271

申请日：2006-05-22

申请人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

发明人： Masakazu Takabayashi ,  Kiichi Yoshiara ,  Yasuhisa Shimakura ,  Sadayuki Matsumoto ,  Tateki Mitani ,  Shigeki Kanamaru ,  Kazushi Ishii

IPC分类号： G02B6/00 ,  G01N21/00

CPC分类号： B60K15/077 ,  B60K2015/03217 ,  G01F23/292 ,  G01F23/2925 ,  G01N21/8507

摘要： An optical fiber sensor that can detect a liquid level or detect a property of liquid with high reliability even under a frequently vibrational environment. The optical fiber sensor includes an optical fiber that includes a core having an area where a grating is formed and a clad, and is disposed so that at least a part of the area with the grating is immersed in liquid, a light source for making light incident to the optical fiber so that a cladding mode light having a wavelength band is occurred by the grating, and a light receiving unit for detecting the intensity of light which is incident from the light source to the optical fiber and transmitted through the grating.

摘要翻译： 即使在频繁的振动环境下也能够高度可靠地检测液位或检测液体的性质的光纤传感器。 光纤传感器包括光纤，其包括具有形成光栅的区域的芯和包层，并且被布置成使得具有光栅的区域的至少一部分浸没在液体中，用于制造光的光源 入射到光纤，使得由光栅发生具有波长带的包层模式光;以及光接收单元，用于检测从光源入射到光纤并透射通过光栅的光的强度。