公开(公告)号：US06334014B1

公开(公告)日：2001-12-25

申请号：US09427661

申请日：1999-10-27

申请人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

发明人： Jun Nitta ,  Yuichi Handa ,  Takahiro Numai

IPC分类号： G02B626

CPC分类号： G02B6/29358 ,  G02B6/02038 ,  G02B6/02061 ,  G02B6/2938

摘要： An optical fiber apparatus includes an optical fiber, and a demultiplexing/multiplexing unit for demultiplexing or multiplexing at least a light wave of at least a wavelength with a sufficiently narrow wavelength spectrum that is determined by a resolving power thereof, such as a Fabry-Perot etalon. The demultiplexing/multiplexing unit is provided or formed directly on at least an end face of the optical fiber. An optical detector array including a plurality of optical detectors for detecting demultiplexed light waves may be provided on a light emergence surface of of the demultiplexing/multiplexing unit.

摘要翻译： 一种光纤装置，包括光纤，以及解复用/多路复用单元，用于至少解复用或多路复用至少具有由其分辨能力确定的足够窄的波长谱的波长的光，例如Fabry-Perot 标准具。 解复用/多路复用单元直接设置在光纤的至少端面上。 包括用于检测解复用光波的多个光检测器的光检测器阵列可以设置在解复用/复用单元的出光表面上。

公开(公告)号：US06304329B1

公开(公告)日：2001-10-16

申请号：US09419779

申请日：1999-10-18

申请人： Jun Nitta ,  Takahiro Numai

发明人： Jun Nitta ,  Takahiro Numai

IPC分类号： G01C1966

CPC分类号： G01C19/66

摘要： In a gyro which has a ring resonator type laser diode, and which detects a beat signal attendant on rotation, a plurality of laser diodes are disposed on an identical substrate, thereby to exhibit a wide detection range for angular velocities. In the gyro, active layers of the laser diodes may be arranged separately from one another. A semiconductor device includes a plurality of ring resonator type laser diodes, each of which undergoes a voltage change or a change in a driving current in attendance on a magnitude of an applied angular velocity when subjected to constant-current drive, and which are disposed in a single frame or on a single substrate. In the semiconductor device, the ring resonator type laser diodes may be disposed on an identical surface of the single substrate.

摘要翻译： 在具有环形谐振腔型激光二极管的陀螺仪中，检测伴随旋转的拍频信号，多个激光二极管设置在相同的基板上，从而呈现宽的角速度检测范围。 在陀螺仪中，激光二极管的有源层可以彼此分开布置。 一种半导体器件包括多个环形谐振器型激光二极管，每个环形谐振器型激光二极管在经受恒流驱动时都受到施加的角速度的大小的影响而产生电压变化或驱动电流的变化， 单个框架或单个基板上。 在半导体器件中，环形谐振器型激光二极管可以设置在单个基板的相同表面上。

公开(公告)号：US5153758A

公开(公告)日：1992-10-06

申请号：US692850

申请日：1991-04-29

申请人： Yoshiharu Tashiro ,  Kenichi Kasahara ,  Takahiro Numai

发明人： Yoshiharu Tashiro ,  Kenichi Kasahara ,  Takahiro Numai

IPC分类号： H01L33/00 ,  H01S5/00 ,  H01S5/042 ,  H01S5/06 ,  H01S5/062 ,  H01S5/22 ,  H01S5/40

CPC分类号： H01S5/0608 ,  H01L33/0016 ,  H01S5/06203 ,  H01S5/0028 ,  H01S5/042 ,  H01S5/22 ,  H01S5/40

摘要： A driving method for a pnpn semiconductor device includes the steps of applying a voltage higher than a holding voltage of the pnpn semiconductor device to an anode electrode thereof, supplying a control signal light to the pnpn semiconductor device to set the pnpn semiconductor device into an ON state, and supplying an information signal light to the pnpn semiconductor device to emit an output light. The control signal light and the information signal light are time-sequentially supplied to the pnpn semiconductor device under the voltage applied thereto. An apparatus for carrying out the driving method includes a light information transmission input line that is branched into a plurality of lines, where a light detection circuit is coupled to at least one of the lines. A synchronous driving circuit applies voltage to the pnpn semiconductor device which is coupled to one of the other lines of the information transmission input line. The pnpn semiconductor device is driven by receiving light from the input line when the light detection circuit detects an address of the pnpn semiconductor device included in a light supplied from the light information transmission input line.

公开(公告)号：US06631002B1

公开(公告)日：2003-10-07

申请号：US09705803

申请日：2000-11-06

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1964

CPC分类号： G01C19/66

摘要： A ring laser gyro wherein a first and a second laser beam propagate with propagating directions different with each other comprises electrode areas on an optical waveguide configuring the ring laser and controls an current injected or a voltage applied to the electrode areas, wherein the oscillating frequencies of the first and second laser beams are different from each other, thereby causing an increase and a decrease in the beat frequency enabling to detect the direction and the speed of a rotation at the same time. With regards to a method for detecting a rotation, the anode of the laser gyro is connected to an operational amplifier. Since the signal outputted from the operational amplifier has a frequency corresponding to the angular speed, it is converted into the voltage by a frequency-voltage conversion circuit so as to detect a rotation. This same method can be used for other types of gyros such as a semiconductor laser gyro, a gas lager gyro and the like.

摘要翻译： 环形激光陀螺仪，其中第一和第二激光束以彼此不同的传播方向传播包括构成环形激光器的光波导上的电极区域，并控制施加到电极区域的电流或电压，其中振荡频率 第一和第二激光束彼此不同，从而导致拍频的增加和减少，从而能够同时检测旋转的方向和速度。 关于用于检测旋转的方法，激光陀螺仪的阳极连接到运算放大器。 由于从运算放大器输出的信号具有对应于角速度的频率，所以通过频率 - 电压转换电路将其转换成电压以检测旋转。 这种相同的方法可以用于其它类型的陀螺仪，例如半导体激光陀螺仪，气瓶陀螺仪等。

公开(公告)号：US06501776B1

公开(公告)日：2002-12-31

申请号：US09492337

申请日：2000-01-27

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： H01S500

CPC分类号： H01S5/12 ,  H01S5/068 ,  H01S5/1053 ,  H01S5/3211 ,  H01S5/3214 ,  H01S5/327

摘要： A semiconductor laser includes a substrate, semiconductor layers formed on the substrate, which construct a cavity including a waveguide with an active region and include at least one semiconductor layer whose refractive-index temperature coefficient is set at a non-positive or minute value sufficient to achieve at least one of the functions of stabilizing an oscillation wavelength of the semiconductor laser and suppressing an overflow of carriers from the active region, and a driving unit for causing electron-hole recombination in the active region.

摘要翻译： 半导体激光器包括衬底，形成在衬底上的半导体层，其构造包括具有有源区的波导的空腔，并且包括至少一个半导体层，其折射率温度系数被设定为非正值或微小值， 实现稳定半导体激光器的振荡波长并抑制载流子从有源区域溢出的功能中的至少一个以及用于在有源区域中引起电子 - 空穴复合的驱动单元。

公开(公告)号：US06351311B1

公开(公告)日：2002-02-26

申请号：US09499679

申请日：2000-02-08

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1968

CPC分类号： G01C19/66

摘要： A gyro includes a laser device for generating a first and second laser beams to be propagated circuitally in opposition directions. An electric signal is taken out from the laser device. A third laser beam having an oscillation frequency different from that of the first laser beam is led to enter the laser device so as to be propagated circuitally in the same direction as the first laser beam.

摘要翻译： 陀螺仪包括用于产生在对置方向上电路传播的第一和第二激光束的激光装置。 从激光装置中取出电信号。 导致具有与第一激光束的振荡频率不同的振荡频率的第三激光束进入激光装置，以便沿与第一激光束相同的方向电路传播。

公开(公告)号：US06297883B1

公开(公告)日：2001-10-02

申请号：US09419778

申请日：1999-10-18

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1966

CPC分类号： H01S5/1071 ,  G01C19/66

摘要： An optical gyro reduces the coupling loss generated when laser beams are incident upon a photodetector and the noise generated by the reflected beams from an external point of reflection to the laser. The gyro includes a ring resonator type gas laser with laser beams propagating circuitally in opposite directions relative to each other and a beat signal detector for detecting a change in electric current, voltage or impedance.

摘要翻译： 光学陀螺仪减少当激光束入射到光电检测器上时产生的耦合损耗和由反射光束从外部反射点产生的噪声到激光器。 陀螺仪包括环形谐振器型气体激光器，激光束相对于彼此以相反方向电路传播，以及拍频信号检测器，用于检测电流，电压或阻抗的变化。

公开(公告)号：US06741354B2

公开(公告)日：2004-05-25

申请号：US09484183

申请日：2000-01-18

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1966

CPC分类号： G01C19/66

摘要： A gyro comprising a laser device for generating laser beams to be propagated circuitally in opposite directions, wherein an electric signal is taken out from the laser device, the oscillation frequencies of the laser beams being different from each other when the laser device is held stationary.

摘要翻译： 一种陀螺仪，包括用于产生要沿相反方向电路传播的激光束的激光装置，其中从激光装置取出电信号，当激光装置保持静止时，激光束的振荡频率彼此不同。

公开(公告)号：US06586725B2

公开(公告)日：2003-07-01

申请号：US09900953

申请日：2001-07-10

申请人： Natsuhiko Mizutani ,  Takahiro Numai

发明人： Natsuhiko Mizutani ,  Takahiro Numai

IPC分类号： G01B910

CPC分类号： G01C19/661

摘要： An optical gyro is provided with a ring laser and detection unit for detecting the beat frequency of said ring laser, and comprises a first ring laser of which beat frequency decreases when the angular velocity increases in a certain direction from a standstill state and a second ring laser of which beat frequency increases when the angular velocity increases regardless of the rotating direction. The first and second ring lasers are so positioned as to be mutually independent optically.

公开(公告)号：US06559949B1

公开(公告)日：2003-05-06

申请号：US09489478

申请日：2000-01-21

申请人： Takahiro Numai

发明人： Takahiro Numai

IPC分类号： G01C1964

CPC分类号： G01C19/66

摘要： A gyro comprises a first laser adapted to generate a first laser beam propagating in a single direction as a main mode of operation, and a second laser adapted to generate a second laser beam propagating in a single direction as a main mode of operation. The gyro may have a beat signal detection means and a photodetector for receiving the first and second laser beams. The first laser beam and the second laser beam have different respective oscillation frequencies and interfere with each other.

摘要翻译： 陀螺仪包括适于产生以单个方向传播的第一激光束作为主要操作模式的第一激光器，以及适于产生以单个方向传播的第二激光束作为主要操作模式的第二激光器。 陀螺仪可以具有拍频信号检测装置和用于接收第一和第二激光束的光电检测器。 第一激光束和第二激光束具有不同的各自的振荡频率并相互干扰。