公开(公告)号：US07382986B2

公开(公告)日：2008-06-03

申请号：US10423950

申请日：2003-04-28

申请人： Jun Ohya ,  Masaru Fuse ,  Seiichiro Kawashima

发明人： Jun Ohya ,  Masaru Fuse ,  Seiichiro Kawashima

IPC分类号： H04B10/04 ,  H04B10/12

CPC分类号： H04B10/5053 ,  H04B10/505 ,  H04B10/5051

摘要： The signal converter of the present invention receives a multichannel video signal and converts the video signal into a microwave signal, the phase of which has been modulated with the video signal. The signal converter includes: a laser light source; a modulating section for modulating the phase of output light of the laser light source with the multichannel video signal and modulating the intensity of the output light with the microwave signal; and a light receiver for receiving the output light modulated by the modulating section and for outputting the microwave signal, the phase of which has been modulated with the multichannel video signal.

摘要翻译： 本发明的信号转换器接收多声道视频信号并将该视频信号转换为微波信号，其相位已经用视频信号进行了调制。 信号转换器包括：激光源; 调制部，用于利用多声道视频信号调制激光光源的输出光的相位，并用微波信号调制输出光的强度; 以及光接收器，用于接收由调制部分调制的输出光，并输出微波信号，其相位已经用多声道视频信号进行了调制。

公开(公告)号：US06556327B1

公开(公告)日：2003-04-29

申请号：US09186142

申请日：1998-11-05

申请人： Jun Ohya ,  Masaru Fuse ,  Seiichiro Kawashima

发明人： Jun Ohya ,  Masaru Fuse ,  Seiichiro Kawashima

IPC分类号： H04B1004

CPC分类号： H04B10/5053 ,  H04B10/505 ,  H04B10/5051

摘要： The signal converter of the present invention receives a multichannel video signal and converts the video signal into a microwave signal, the phase of which has been modulated with the video signal. The signal converter includes: a laser light source; a modulating section for modulating the phase of output light of the laser light source with the multichannel video signal and modulating the intensity of the output light with the microwave signal; and a light receiver for receiving the output light modulated by the modulating section and for outputting the microwave signal, the phase of which has been modulated with the multichannel video signal.

摘要翻译： 本发明的信号转换器接收多声道视频信号并将该视频信号转换为微波信号，其相位已经用视频信号进行了调制。 信号转换器包括：激光源; 调制部，用于利用多声道视频信号调制激光光源的输出光的相位，并用微波信号调制输出光的强度; 以及光接收器，用于接收由调制部分调制的输出光，并输出微波信号，其相位已经用多声道视频信号进行了调制。

公开(公告)号：US06335814B1

公开(公告)日：2002-01-01

申请号：US09136934

申请日：1998-08-20

申请人： Masaru Fuse ,  Jun Ohya

发明人： Masaru Fuse ,  Jun Ohya

IPC分类号： H04B1004

CPC分类号： H04B10/676 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/69

摘要： An angle modulating portion 1 converts an inputted electrical signal into a predetermined angle-modulated signal. An optical modulating portion 2 converts the angle-modulated signal outputted from the angle modulating portion 1 into an optical-modulated signal and sends the optical-modulated signal to an optical waveguide portion 3. An interference portion 6 separates the optical-modulated signal transmitted through the optical waveguide portion 3 into two optical signals having predetermined difference in propagation delay and then combines the optical signals. An optical/electrical converting portion 4 subjects the combined optical signal to homodyne detection, to acquire a demodulated signal of the original electrical signal and output the electrical signal. That is, the interference portion 6 and the optical/electrical converting portion 4 constitute a delayed detection system of an optical signal, so that the delayed detection system performs conversion processing of an optical signal into an electrical signal and angle demodulation processing simultaneously. In this way, a signal with a wide-band and a high-frequency can be acquired by demodulation without electrical part for wide-bands and high-frequencies.

摘要翻译： 角度调制部分1将输入的电信号转换成预定的角度调制信号。 光调制部分2将从角度调制部分1输出的角度调制信号转换为光调制信号，并将光调制信号发送到光波导部分3.干涉部分6将传输的光调制信号 光波导部分3变成具有预定传播延迟差的两个光信号，然后组合光信号。 光/电转换部分4使组合的光信号进行零差检测，以获取原始电信号的解调信号并输出​​电信号。 也就是说，干涉部6和光电转换部4构成光信号的延迟检测系统，使得延迟检测系统同时执行光信号的转换处理为电信号和角度解调处理。 以这种方式，可以通过解调而获得具有宽带和高频的信号，而不需要用于宽带和高频的电气部分。

公开(公告)号：US06690893B2

公开(公告)日：2004-02-10

申请号：US09975188

申请日：2001-10-12

申请人： Masaru Fuse ,  Jun Ohya

发明人： Masaru Fuse ,  Jun Ohya

IPC分类号： H04B1004

CPC分类号： H04B10/676 ,  H04B10/505 ,  H04B10/5051 ,  H04B10/5053 ,  H04B10/69

摘要： An angle modulating portion 1 converts an inputted electrical signal into a predetermined angle-modulated signal. An optical modulating portion 2 converts the angle-modulated signal outputted from the angle modulating portion 1 into an optical-modulated signal and sends the optical-modulated signal to an optical waveguide portion 3. An interference portion 6 separates the optical-modulated signal transmitted through the optical waveguide portion 3 into two optical signals having predetermined difference in propagation delay and then combines the optical signals. An optical/electrical converting portion 4 subjects the combined optical signal to homodyne detection, to acquire a demodulated signal of the original electrical signal and output the electrical signal. That is, the interference portion 6 and the optical/electrical converting portion 4 constitute a delayed detection system of an optical signal, so that the delayed detection system performs conversion processing of an optical signal into an electrical signal and angle demodulation processing simultaneously. In this way, a signal with a wide-band and a high-frequency can be acquired by demodulation without electrical part for wide-bands and high-frequencies.

摘要翻译： 角度调制部分1将输入的电信号转换成预定的角度调制信号。 光调制部分2将从角度调制部分1输出的角度调制信号转换为光调制信号，并将光调制信号发送到光波导部分3.干涉部分6将传输的光调制信号 光波导部分3变成具有预定传播延迟差的两个光信号，然后组合光信号。 光/电转换部分4使组合的光信号进行零差检测，以获取原始电信号的解调信号并输出​​电信号。 也就是说，干涉部6和光电转换部4构成光信号的延迟检测系统，使得延迟检测系统同时执行光信号的转换处理为电信号和角度解调处理。 以这种方式，可以通过解调而获得具有宽带和高频的信号，而不需要用于宽带和高频的电气部分。

公开(公告)号：US20120298090A1

公开(公告)日：2012-11-29

申请号：US13576738

申请日：2010-02-08

申请人： Jun Ohya ,  Tatsumi Hamasaki ,  Hiroyuki Yoshimura ,  Masaru Fukuman

发明人： Jun Ohya ,  Tatsumi Hamasaki ,  Hiroyuki Yoshimura ,  Masaru Fukuman

IPC分类号： B28D5/04

CPC分类号： B28D5/045 ,  B23D57/0069 ,  B24B27/0633

摘要： The present invention provides a method of cutting a workpiece efficiently with high accuracy by utilizing tension adjusters to approximate tension in a wire in a wire saw to a predetermined target tension while effectively reducing only tension in a winder-side wire. The method comprises a forward-driven cutting step of cutting a workpiece while moving a wire forward, a first switching step of reversing a driving direction of the wire, a backward-driven cutting step of cutting the workpiece while moving the wire backward, and a second switching step of reversing a driving direction of the wire and returning to the forward-driven cutting step, the steps being repeated in this order. In both switching steps, only tension in a winder-side wire is reduced by tension manipulators. A reduction in target wire tension therefor is performed after completion of deceleration of the wire in each switching step.

摘要翻译： 本发明提供了一种通过利用张力调节器来有效地切割工件的方法，以使线锯中的线材的张力近似到预定的目标张力，同时有效地仅减小缠绕器线材中的张力。 该方法包括：向前驱动切割步骤，在向前移动线的同时切割工件;反转线的驱动方向的第一切换步骤;向后移动切割工件的向后驱动切割步骤;以及 第二切换步骤，其使线的驱动方向反转并返回到前进驱动的切割步骤，按顺序重复该步骤。 在两个切换步骤中，仅通过张力操纵器减小卷绕机侧线中的张力。 在每个切换步骤中线材的减速完成之后，执行目标线张力的降低。

公开(公告)号：US5914808A

公开(公告)日：1999-06-22

申请号：US701987

申请日：1996-08-23

申请人： Masahiro Mitsuda ,  Jun Ohya ,  Tomoaki Uno

发明人： Masahiro Mitsuda ,  Jun Ohya ,  Tomoaki Uno

IPC分类号： G02F1/35 ,  H01S3/06 ,  H01S3/067 ,  H01S3/10 ,  H01S3/00

CPC分类号： H01S3/06758

摘要： The fiber amplifier of this invention includes: a first rare earth element doped fiber; a second rare earth element doped fiber; and a pump light source for generating pump light for exciting the first rare earth element doped fiber and the second rare earth element doped fiber, the fiber amplifier receiving analog signal light and amplifying the analog signal light, wherein the fiber amplifier further includes a directional transmitter disposed between the first rare earth element doped fiber and the second rare earth element doped fiber, and a transmittance of the directional transmitter for at least light having the same wavelength as the signal light propagating from the first rare earth element doped fiber to the second rare earth element doped fiber is larger than a transmittance of the directional transmitter for the light propagating from the second rare earth element doped fiber to the first rare earth element doped fiber.

摘要翻译： 本发明的光纤放大器包括：第一稀土元素掺杂光纤; 第二稀土元素掺杂光纤; 以及泵浦光源，用于产生用于激发第一稀土元素掺杂光纤和第二稀土元素掺杂光纤的泵浦光，所述光纤放大器接收模拟信号光并放大模拟信号光，其中光纤放大器还包括定向发射器 设置在第一稀土元素掺杂光纤和第二稀土元素掺杂光纤之间，并且定向发射器的透射率至少为与从第一稀土元素掺杂光纤传播到第二稀土元素掺杂光纤的信号光具有相同波长的光 对于从第二稀土元素掺杂光纤向第一稀土元素掺杂光纤传播的光，定向发送器的透射率大于地球元素掺杂光纤。

公开(公告)号：US5659558A

公开(公告)日：1997-08-19

申请号：US610884

申请日：1996-03-05

申请人： Genji Tohmon ,  Jun Ohya ,  Tomoaki Uno

发明人： Genji Tohmon ,  Jun Ohya ,  Tomoaki Uno

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/30

CPC分类号： H01S3/067 ,  H01S3/094096 ,  H01S3/1616 ,  H01S3/1645

摘要： A first pumping beam at a wavelength of 1210 nm emitted from a first pumping source is focused by a first lens system on an optical fiber. A second pumping beam at a wavelength of 650 nm emitted from a second pumping source passes through a coupler and a second lens system and arrives at the optical fiber to be incident thereon. Tm ions with which a core portion of the optical fiber is doped sequentially experience a ground-state level absorption transition upon absorption of the first pumping beam, an excited-state level absorption transition to an upper laser level upon absorption of the second pumping beam, and a radiative transition from the upper laser level to a ground-state level, thereby emitting light at a wavelength of 460 to 500 nm. The light at a wavelength of 460 to 500 nm emitted from the Tm ions is resonated by a resonator consisting of an incident mirror and an emitting mirror and outputted as a laser beam.

摘要翻译： 从第一泵浦源发射的波长为1210nm的第一泵浦光束由第一透镜系统聚焦在光纤上。 从第二泵浦源发射的波长为650nm的第二泵浦光束穿过耦合器和第二透镜系统并到达光纤入射到其上。 掺杂光纤的纤芯部分的Tm离子顺序地经受吸收第一泵浦光束时的基态状态电平吸收转变，吸收第二泵浦光束时的激发态电平吸收跃迁到上激光水平， 以及从上激光电平到基态电平的辐射转变，从而发射波长为460〜500nm的光。 从Tm离子发射的波长为460〜500nm的光由入射镜和发射镜构成的谐振器谐振，作为激光束输出。

公开(公告)号：US5426656A

公开(公告)日：1995-06-20

申请号：US184932

申请日：1994-01-24

申请人： Genji Tohmon ,  Jun Ohya ,  Hisanao Sato ,  Tomoaki Uno

发明人： Genji Tohmon ,  Jun Ohya ,  Hisanao Sato ,  Tomoaki Uno

IPC分类号： H01S3/067 ,  H01S3/094 ,  H01S3/16 ,  H01S3/14

CPC分类号： H01S3/16 ,  H01S2302/00 ,  H01S3/067 ,  H01S3/094092 ,  H01S3/1611

摘要： The optical fiber is doped at the core thereof with Tm ions and Nd ions. When light at a wavelength in a 800-nm band for exciting the Nd ions, is incident upon the optical fiber through an incident portion thereof, the Nd ions emit light at a wavelength in the vicinity of 1,012 .mu.m. Through three excitations by absorption of light emitted from the Nd ions and/or energy transfer from the Nd ions, the Tm ions experience three excitation transitions and reach a third high energy level through first and second high energy levels. Thereafter, the Tm ions experience a radiative transition from the third high energy level, thereby to emit blue light at a wavelength of 480 nm.

摘要翻译： 光纤在其核心掺杂有Tm离子和Nd离子。 当用于激发Nd离子的800nm波长的波长的光通过其入射部分入射到光纤上时，Nd离子发射波长在1012μm附近的光。 通过吸收从Nd离子发射的光和/或来自Nd离子的能量转移的三次激发，Tm离子经历三次激发跃迁，并通过第一和第二高能级达到第三高能级。 此后，Tm离子经历从第三高能量水平的辐射跃迁，由此发射波长为480nm的蓝色光。

公开(公告)号：US4910738A

公开(公告)日：1990-03-20

申请号：US276858

申请日：1988-11-28

申请人： Toshihiro Fujita ,  Jun Ohya

发明人： Toshihiro Fujita ,  Jun Ohya

IPC分类号： H01S3/098 ,  H01S3/109 ,  H01S5/14

CPC分类号： H01S3/08036 ,  H01S3/109 ,  H01S5/14

摘要： By using a polarization controller, a semiconductor laser apparatus oscillating in the transverse magnetic mode in mode-locked state is realized, and a short optical pulse is generated. By coupling this mode-locked semiconductor laser to a wavelength conversion element, a second harmonic wave is generated, and an even shorter optical pulse is obtained at a higher power.

摘要翻译： 通过使用偏振控制器，实现了在锁模状态下以横向磁模式振荡的半导体激光装置，产生短的光脉冲。 通过将该锁模半导体激光器耦合到波长转换元件，产生二次谐波，并且以更高的功率获得更短的光脉冲。

公开(公告)号：US4843609A

公开(公告)日：1989-06-27

申请号：US138086

申请日：1987-12-28

申请人： Jun Ohya ,  Yasushi Matsui

发明人： Jun Ohya ,  Yasushi Matsui

IPC分类号： H04B10/00 ,  G02B6/12 ,  G02F2/00 ,  H01S5/00 ,  H01S5/026 ,  H01S5/10 ,  H01S5/125 ,  H01S5/14 ,  H04B10/524 ,  H04B10/54

CPC分类号： H04B10/61 ,  G02B6/12004 ,  G02F2/002 ,  H01S5/0264 ,  H01S5/1032 ,  H01S5/125 ,  H04B10/64 ,  H01S5/141

摘要： Disclosed is an optical integrated circuit for heterodyne detection. The optical integrated circuit comprises: a semiconductor substrate; an active region of a semiconductor laser; two optical waveguides; a photo detector; and an optical coupler composed of the waveguides. The emission of light from the active region of the semiconductor laser is synthesized as local oscillation light with the transmission light. The synthesized light travels through the optical coupler and is detected by the photo detector.

摘要翻译： 公开了一种用于外差检测的光学集成电路。 该光学集成电路包括：半导体衬底; 半导体激光器的有源区; 两个光波导; 光电检测器 以及由该波导构成的光耦合器。 来自半导体激光器的有源区域的光的发射被合成为具有透射光的本地振荡光。 合成的光线通过光耦合器，由光电检测器检测。