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公开(公告)号：US5838854A
公开(公告)日：1998-11-17
申请号：US955161
申请日：1997-10-21
IPC分类号： G02B6/122 , G02B6/12 , G02B6/125 , G02B6/13 , G02B6/34 , G02B6/42 , G02F2/00 , H01L27/15 , H01S5/00 , H01S5/026 , H01S5/042 , H01S5/12 , H01S5/22 , H01S5/223 , H01S5/323 , H01S5/40 , H01S5/50 , G02B1/295 , G02B6/26
CPC分类号： G02B6/4246 , G02B6/12004 , G02B6/12007 , G02B6/125 , G02B6/42 , H01S5/026 , G02B2006/12104 , G02B6/29361 , H01S5/0262 , H01S5/12 , H01S5/22 , H01S5/223 , H01S5/32316 , H01S5/4031 , H01S5/4056 , H01S5/50
摘要： The integrated optical control element of this invention includes: a first waveguide for allowing light incident from outside to propagate therein; a multilayer structure for allowing the light which has propagated in the first waveguide to be incident thereon and for transmitting the light therethrough or reflecting the light therefrom, the multilayer structure including at least one layer having a refractive index different from an equivalent refractive index of a region with which the at least one layer is in contact; and a second waveguide for receiving at least part of the light transmitted through or reflected from the multilayer structure.
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公开(公告)号：US5548434A
公开(公告)日：1996-08-20
申请号：US351224
申请日：1994-11-30
IPC分类号： H04B10/112 , H04B10/00
CPC分类号： H04B10/1125
摘要： A spatial coherent light transmission apparatus according to the present invention, includes: a light transmitter for emitting a data signal as first coherent light; a light receiver for emitting second coherent light having a wavelength little different from that of The first coherent light, mixing and receiving the first and second coherent lights, and performing a coherent detection of the data signal. At least one of the light transmitter and the light receiver has a detection device for detecting at least one of a coherent light transmission state and a coherent light detection state. The apparatus further includes a control device for controlling at least one of the light transmitter and the light receiver based on information of the state detected by the detection device.
摘要翻译： 根据本发明的空间相干光传输装置包括：光发射器，用于发射数据信号作为第一相干光; 用于发射具有与第一相干光的波长略微不同的波长的第二相干光的光接收器，混合和接收第一和第二相干光，以及执行数据信号的相干检测。 光发射器和光接收器中的至少一个具有用于检测相干光透射状态和相干光检测状态中的至少一个的检测装置。 该装置还包括控制装置，用于根据由检测装置检测到的状态的信息来控制光发射器和光接收器中的至少一个。
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3.发明授权
公开(公告)号：US5815615A
公开(公告)日：1998-09-29
申请号：US579437
申请日：1995-12-27
IPC分类号： G02B6/122 , G02B6/12 , G02B6/125 , G02B6/13 , G02B6/34 , G02B6/42 , G02F2/00 , H01L27/15 , H01S5/00 , H01S5/026 , H01S5/042 , H01S5/12 , H01S5/22 , H01S5/223 , H01S5/323 , H01S5/40 , H01S5/50 , G02B6/26
CPC分类号： G02B6/4246 , G02B6/12004 , G02B6/12007 , G02B6/125 , G02B6/42 , H01S5/026 , G02B2006/12104 , G02B6/29361 , H01S5/0262 , H01S5/12 , H01S5/22 , H01S5/223 , H01S5/32316 , H01S5/4031 , H01S5/4056 , H01S5/50
摘要： The integrated optical control element of this invention includes: a first waveguide for allowing light incident from outside to propagate therein; a multilayer structure for allowing the light which has propagated in the first waveguide to be incident thereon and for transmitting the light therethrough or reflecting the light therefrom, the multilayer structure including at least one layer having a refractive index different from an equivalent refractive index of a region with which the at least one layer is in contact; and a second waveguide for receiving at least part of the light transmitted through or reflected from the multilayer structure.
摘要翻译： 本发明的集成光学控制元件包括：用于允许从外部入射的光在其中传播的第一波导; 用于允许在第一波导中传播的光入射在其上并用于透射光或反射光的多层结构，所述多层结构包括至少一层折射率不同于 所述至少一层与其接触的区域; 以及第二波导，用于接收透射通过或从多层结构反射的光的至少一部分。
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4.发明授权Optical heterodyne detection method and apparatus utilizing a scattered reference beam 失效利用散射参考光束的光外差检测方法和装置
公开(公告)号：US5477319A
公开(公告)日：1995-12-19
申请号：US171478
申请日：1993-12-22
申请人： Atsushi Shimonaka , Tatsuya Morioka , Mototaka Taneya , Hidenori Kawanishi , Haruhisa Takiguchi
发明人： Atsushi Shimonaka , Tatsuya Morioka , Mototaka Taneya , Hidenori Kawanishi , Haruhisa Takiguchi
IPC分类号： G02F2/00 , H04B10/07 , H04B10/116 , H04B10/27 , H04B10/29 , H04B10/516 , H04B10/556 , H04B10/564 , H04B10/572 , H04B10/61 , G01B9/02
CPC分类号： H04B10/1121
摘要： An optical heterodyne detection method of detecting a beat signal by heterodyne detection using a superimposition of two or more beams of light including a signal beam and a reference beam, includes the steps of: generating a scattered reference beam from the reference beam: and detecting the beat signal obtained from the scattered reference beam and the signal beam, by superimposing the scattered reference beam and the signal beam.
摘要翻译： 一种通过使用包括信号光束和参考光束的两个或更多个光束的叠加的外差检测来检测拍子信号的光学外差检测方法包括以下步骤：从参考光束产生散射参考光束，并且检测 通过叠加散射参考光束和信号光束，从散射参考光束和信号光束获得的拍子信号。
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公开(公告)号：US5457561A
公开(公告)日：1995-10-10
申请号：US101080
申请日：1993-08-04
申请人： Mototaka Taneya , Seiki Yano , Haruhisa Takiguchi , Atsushi Shimonaka , Tatsuya Morioka , Hidenori Kawanishi
发明人： Mototaka Taneya , Seiki Yano , Haruhisa Takiguchi , Atsushi Shimonaka , Tatsuya Morioka , Hidenori Kawanishi
IPC分类号： H04B10/61 , H04B10/079 , H04B10/11 , H04B10/116 , H04B10/293 , H04B10/516 , H04B10/556 , H04B10/564 , H04B10/572 , H04B10/00
CPC分类号： H04B10/1121
摘要： A system for transmitting information with a coherent beam being propagatable in the air is arranged to include a transmitting device having a modulator and an emitting circuit and a receiving device having a generator, a mixer, a frequency discriminating circuit, and reproducing circuit. The modulator modulates a reference light frequency (wavelength) or phase of a coherent beam to be emitted from a light source according to the signal. The emitting circuit emits the modulated beam as a divergent beam having such a power density as being safe to human eyes. The generator generates a coherent locally oscillated beam. The mixer mixes the signal beam with the locally oscillated beam and photoelectric-converts the mixed beam. The frequency discriminating circuit frequency-discriminates the a.c. component of the photoelectric-converted output. The reproducing circuit reproduces a signal from the output of frequency discriminating circuit. Any one of the transmitting device and the receiving device has a function of keeping a relative light frequency difference (wavelength difference) between the signal beam and the locally oscillated beam constant.
摘要翻译： 用于在空气中传播的相干光束传输信息的系统被布置成包括具有调制器和发射电路的发射装置和具有发生器，混频器，鉴频电路和再现电路的接收装置。 调制器根据信号调制要从光源发射的相干光束的参考光频率（波长）或相位。 发射电路发射调制束作为具有对人眼安全的功率密度的发散光束。 发生器产生相干局部振荡光束。 混合器将信号光束与局部振荡光束混合，并对混合光束进行光电转换。 频率鉴别电路对a.c.进行频率鉴别。 光电转换输出的分量。 再现电路从频率鉴别电路的输出再现信号。 发送装置和接收装置中的任一个具有保持信号光束与局部振荡光束之间的相对光频差（波长差）恒定的功能。
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公开(公告)号：US5657307A
公开(公告)日：1997-08-12
申请号：US403257
申请日：1995-03-10
CPC分类号： G11B7/127 , G11B7/005 , G11B7/126 , G11B2007/0013
摘要： An optical data reading method and apparatus for photoelectrically converting reflection light of a laser beam radiated onto a recording medium and thereby reproducing digital data recorded in the recording medium, performing a coherent detection by photoelectrically converting a first laser beam having a light frequency .nu..sub.1 and a second laser beam having a light frequency .nu..sub.2, where .nu..sub.1 -.nu..sub.2 .gtoreq.R (R: rate of reading the digital data), in a state where wavefronts of the first and second laser beams are aligned with each other, detecting temporal changes of either an amplitude or a phase of a beat signal component of the first and second laser beams, having a frequency of (.nu..sub.1 -.nu..sub.2) and being included in an photoelectrically converted output, and reading the digital data recorded in the recording medium based on a result of detection.
摘要翻译： 一种光学数据读取方法和装置，用于对辐射到记录介质上的激光束的反射光进行光电转换，从而再现记录在记录介质中的数字数据，通过光电转换具有光频率nu 1的第一激光束和 在第一和第二激光束的波前彼此对准的状态下，具有光频率nu 2的第二激光束，其中nu 1 -nu 2> / = R（R：读数字数据的速率） 检测第一和第二激光束的拍频信号分量的幅度或相位的时间变化，其频率为（nu-nu 2）并被包括在光电转换输出中，并且读取记录在 基于检测结果的记录介质。
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公开(公告)号：US5539562A
公开(公告)日：1996-07-23
申请号：US301963
申请日：1994-09-07
IPC分类号： H04B10/11 , H04B10/07 , H04B10/118 , H04B10/2507 , H04B10/516 , H04B10/54 , H04B10/556 , H04B10/564 , H04B10/61 , H04B10/00
CPC分类号： H04B10/1125
摘要： A spatial optical transmission apparatus includes: a light signal transmitting device for generating a signal beam which is modulated in accordance with a signal to be transmitted and is intensity-modulated with a lower frequency compared with a signal transmission speed; and a light signal demodulating device for receiving the signal beam from the light signal transmitting device by a detector, adjusting the direction of a locally oscillated beam based on the received signal beam so as to have a predetermined relationship with the direction of the signal beam so that intensity-modulated components in an output signal from the detector falls within a predetermined range of intensity, thereby aligning the wavefront of the signal beam with the wavefront of the locally oscillated beam, and extracting signal components which correspond to the transmitted signal from signal components modulated in accordance with the transmitted signal in the signal beam.
摘要翻译： 一种空间光传输装置，包括：光信号发送装置，用于产生根据要发送的信号进行调制并与信号传输速度相比以较低的频率进行强度调制的信号光束; 以及光信号解调装置，用于通过检测器接收来自光信号发射装置的信号光束，基于接收信号光束调整局部振荡光束的方向，以便与信号光束的方向具有预定的关系 来自检测器的输出信号中的强度调制分量落在预定的强度范围内，从而将信号波束的波前与局部振荡波束的波阵面对准，并从信号分量中提取与发射信号相对应的信号分量 根据信号光束中的发射信号进行调制。
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公开(公告)号：US5488678A
公开(公告)日：1996-01-30
申请号：US283743
申请日：1994-08-01
CPC分类号： G02B6/42 , G02B6/423 , G02B6/4232 , H01L2224/48091 , H01L2224/73265 , H01L2924/01079
摘要： In an assembly structure of an optical integrated circuit device for assembling a semiconductor laser device and an optical integrated circuit substrate, the semiconductor laser device includes a recessed/raised structure. On the other hand, the optical integrated circuit substrate includes another recessed/raised structure to fit the recessed/raised structure of the semiconductor laser device. These recessed/raised structures are formed so that their cross sections taken parallel to the layers forming the semiconductor laser device are symmetric in shape about the respective optical axes of the semiconductor laser device and the optical integrated circuit substrate. Further, the recessed/raised structures preferably contain a tapered portion as part of its contour, the taper forming a prescribed angle with the respective optical axes. Thus, the mounting accuracy required to achieve the prescribed coupling efficiency in the optical integrated circuit device can be obtained by simple mechanical operations.
摘要翻译： 在用于组装半导体激光器件和光学集成电路衬底的光学集成电路器件的组装结构中，半导体激光器件包括凹入/凸起结构。 另一方面，光集成电路基板包括与半导体激光装置的凹凸结构配合的另一凹凸结构。 这些凹凸结构被形成为使得它们与形成半导体激光器件的层平行的截面相对于半导体激光器件和光学集成电路衬底的各个光轴对称。 此外，凹入/凸起结构优选地包含作为其轮廓的一部分的锥形部分，锥形与各个光轴形成规定的角度。 因此，通过简单的机械操作可以获得在光集成电路器件中实现规定的耦合效率所需的安装精度。
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9.发明授权Optical information reading method for reducing laser noise using a semiconductor laser and a driving device for the semiconductor laser 失效使用半导体激光器降低激光噪声的光信息读取方法和用于半导体激光器的驱动装置
公开(公告)号：US5448548A
公开(公告)日：1995-09-05
申请号：US140748
申请日：1993-10-21
CPC分类号： G11B7/126
摘要： A method for optically reading recorded information by radiating laser light emitted from a semiconductor laser which oscillates in a single longitudinal mode to an information recording medium and by detecting laser light reflected from a recording face of the information recording medium is disclosed. In the method, the optical frequency of the laser light is modulated in order that the modulated optical frequency is a periodic function dependent on time, and the absolute value of a time differential coefficient R (Hz/s) of the periodic function, a spectral line width .delta. .nu. (Hz) of the laser light, and a time period .tau. (s) from the time when the laser light is emitted to the time when the laser light reflected from the recording face of the information recording medium reaches the semiconductor laser satisfy the condition of R.gtoreq..delta. .nu./.tau.. The periodic function varies to have a sawtooth waveform or a triangular waveform.
摘要翻译： 公开了一种通过将从单个纵向模式振荡的半导体激光器发射的激光照射到信息记录介质上并通过检测从信息记录介质的记录面反射的激光来光学读取记录信息的方法。 在该方法中，调制激光的光频率，使得调制光频率是依赖于时间的周期函数，周期函数的时间微分系数R（Hz / s）的绝对值，光谱 激光的线宽Δnu（Hz）和从激光发射时到从信息记录介质的记录面反射的激光到达半导体激光器的时刻的时间段τ（s） 满足R> / =Δnu/τ的条件。 周期函数变化具有锯齿波形或三角形波形。
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公开(公告)号：US4811351A
公开(公告)日：1989-03-07
申请号：US35477
申请日：1987-04-07
CPC分类号： H01S5/028 , G02B6/122 , H01S5/4068
摘要： A semiconductor laser array device comprising a substrate; an index-waveguiding area positioned on said substrate; a Fourier-converting area, which is adjacent to said waveguiding area and in which laser lights emitted with synchronized phases from said waveguiding area undergo the Fourier-conversion, positioned on said substrate; and a reflecting mirror, which is adjacent to said Fourier-converting area and by which said converted laser lights with a 0.degree.-phase shift mode are selectively reflected so as to be incident upon said waveguiding areas.
摘要翻译： 一种半导体激光器阵列器件，包括衬底; 位于所述基板上的折射率波导区域; 傅里叶变换区域，其邻近所述波导区域，并且其中来自所述波导区域的同步相位发射的激光经历傅里叶变换，位于所述基板上; 以及反射镜，其与所述傅立叶变换区域相邻，并且所述经转换的0°相移模式的激光被选择性地反射以入射到所述波导区域。
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