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公开(公告)号：US20120243824A1
公开(公告)日：2012-09-27
申请号：US13358595
申请日：2012-01-26
申请人： Kazumasa TAKABAYASHI
发明人： Kazumasa TAKABAYASHI
IPC分类号： G02B6/42
CPC分类号： H01L31/03046 , H01L31/035281 , H01L31/105 , Y02E10/544
摘要： A tapered waveguide is provided for connection between an input waveguide and a photodiode. The width of the tapered waveguide increases as it extends from the input end that is connected to the input waveguide towards the output end that is connected to the photodiode. The tapered waveguide has an optimum half spread angle to cause higher-order mode excitation when receiving optical signal from the input waveguide. The photodiode either has a constant width or increases in width as it extends away from the output end of the tapered waveguide, its half spread angle being equal to or less than the half spread angle of the tapered waveguide.
摘要翻译： 提供锥形波导用于输入波导和光电二极管之间的连接。 锥形波导的宽度随着从连接到输入波导的输入端延伸到连接到光电二极管的输出端而增加。 锥形波导具有最佳的半扩展角，以在从输入波导接收光信号时引起高阶模式激励。 当光电二极管从锥形波导的输出端延伸出时，光电二极管或者具有恒定的宽度或宽度增加，其半扩展角度等于或小于锥形波导的半扩展角。
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公开(公告)号：US07539378B2
公开(公告)日：2009-05-26
申请号：US11826592
申请日：2007-07-17
申请人： Kazumasa Takabayashi , Ken Morito
发明人： Kazumasa Takabayashi , Ken Morito
CPC分类号： G02F1/025 , B82Y20/00 , G02B6/14 , G02B6/2813 , G02B2006/12152 , G02F1/01708 , G02F2001/217 , H01S5/026 , H01S5/0265 , H01S5/028 , H01S5/06206 , H01S5/101 , H01S5/1014 , H01S5/12 , H01S5/20 , H01S5/50
摘要： In order to make it possible to suppress the influence of reflected light on a connection interface easily and with certainty, an optical waveguide device includes a first optical waveguide (1), a second optical waveguide (2) formed from a material or in a structure different from that of the first optical waveguide (1) and connected to the first optical waveguide (1), and a 1×1 multimode interference waveguide (3) formed by increasing the widths of the first optical waveguide (1) and the second optical waveguide (2) in the proximity of a connection interface between the first optical waveguide (1) and the second optical waveguide (2).
摘要翻译： 为了能够容易地且可靠地抑制反射光对连接界面的影响，光波导装置包括第一光波导（1），由材料或结构形成的第二光波导（2） 与第一光波导（1）的不同，并且连接到第一光波导（1），以及通过增加第一光波导（1）和第二光波导（1）的宽度形成的1x1多模干涉波导（3） 2）在第一光波导（1）和第二光波导（2）之间的连接接口附近。
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公开(公告)号：US07158547B2
公开(公告)日：2007-01-02
申请号：US11004907
申请日：2004-12-07
CPC分类号： B82Y20/00 , H01S5/06256 , H01S5/1032 , H01S5/1035 , H01S5/141 , H01S5/34
摘要： A wavelength tunable laser device includes: a pair of reflection mirrors; a semiconductor element disposed between the pair of reflection mirrors, the semiconductor element integrating a region for providing an optical gain, a region having a wavelength tunable filter function and a phase control region; and an optical filter disposed between the semiconductor element and one of the pair of reflection mirrors, the optical filter having periodical transmission wavelengths. A wavelength tunable laser device is provided which is easy to be controlled and can be made compact.
摘要翻译： 一种波长可调激光器件包括：一对反射镜; 设置在一对反射镜之间的半导体元件，集成用于提供光学增益的区域的半导体元件，具有波长可调滤波器功能的区域和相位控制区域; 以及设置在所述半导体元件和所述一对反射镜中的一个之间的滤光器，所述滤光器具有周期性的透射波长。 提供了一种易于控制并且可以紧凑的波长可调激光器件。
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公开(公告)号：US07130322B2
公开(公告)日：2006-10-31
申请号：US10810601
申请日：2004-03-29
申请人： Kazumasa Takabayashi , Ken Morito , Yuji Kotaki
发明人： Kazumasa Takabayashi , Ken Morito , Yuji Kotaki
CPC分类号： H01S5/0687 , H01S5/06255 , H01S5/06808 , H01S5/141
摘要： There is provided a phase control portion for controlling phase of a laser beam resonated in a resonator based on detected results by two optical detectors. The phase control portion adjusts the longitudinal mode positions by a feedback control so that a ratio of intensities detected by the two optical detectors comes to a predetermined reference value. To one of the optical detectors, part of a laser beam outputted from the resonator is irradiated as it is, whereas, to the other one of the optical detectors, part of the laser beam outputted from the resonator is irradiated after passing through an etalon. An FSR of the etalon is a double of that of another etalon in the resonator.
摘要翻译： 提供了一种相位控制部分，用于基于两个光学检测器的检测结果来控制谐振器中谐振的激光束的相位。 相位控制部分通过反馈控制来调节纵向模式位置，使得由两个光学检测器检测到的强度比达到预定的参考值。 对于光检测器中的一个，从谐振器输出的激光束的一部分照原样照射，而对另一个光检测器，从谐振器输出的激光束的一部分在通过标准具之后被照射。 标准具的FSR是谐振器中另一个标准具的FSR的两倍。
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公开(公告)号：US08710614B2
公开(公告)日：2014-04-29
申请号：US13402114
申请日：2012-02-22
申请人： Kazumasa Takabayashi
发明人： Kazumasa Takabayashi
CPC分类号： H01L31/02325 , H01L27/1443 , H01L27/146 , H01L31/105 , H01L31/1123
摘要： A light receiving element includes a core configured to propagate a signal light, a first semiconductor layer having a first conductivity type, the first semiconductor layer being configured to receive the signal light from the core along a first direction in which the core extends, an absorbing layer configured to absorb the signal light received by the first semiconductor layer, and a second semiconductor layer having a second conductivity type opposite to the first conductivity type.
摘要翻译： 光接收元件包括被配置为传播信号光的芯，具有第一导电类型的第一半导体层，第一半导体层被配置为沿着芯延伸的第一方向接收来自芯的信号光，吸收 被配置为吸收由第一半导体层接收的信号光的层，以及具有与第一导电类型相反的第二导电类型的第二半导体层。
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6.发明授权Tunable laser module, tunable laser apparatus and controlling method for tunable laser 有权可调谐激光模块，可调谐激光装置及可调激光器的控制方法公开(公告)号：US07940819B2
公开(公告)日：2011-05-10
申请号：US12535283
申请日：2009-08-04
CPC分类号： H01S5/141 , H01S5/0612 , H01S5/0617 , H01S5/06256 , H01S5/06258 , H01S5/0687 , H01S5/1032
摘要： A tunable laser module includes a tunable laser section including a gain medium and a wavelength filter having a periodic characteristic which brings about a discontinuous variation of an oscillation wavelength, and a monitoring section adapted to output a monitoring signal which periodically varies in response to the oscillation wavelength of the tunable laser section. The monitoring section includes a monitoring wavelength filter having a periodic characteristic which defines the monitoring signal. The relationship between the period of the wavelength filter and the period of the monitoring wavelength filter is set such that the monitoring signal varies when the oscillation wavelength varies discontinuously.
摘要翻译： 可调谐激光器模块包括可调激光器部分，其包括增益介质和具有导致振荡波长的不连续变化的周期性特性的波长滤波器;以及监视部分，其适于输出响应于振荡周期性变化的监视信号 可调激光器部分的波长。 监视部分包括具有限定监视信号的周期特性的监视波长滤波器。 设置波长滤波器的周期与监视波长滤波器的周期之间的关系，使得当振荡波长不连续地变化时，监视信号变化。
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7.发明申请TUNABLE LASER MODULE, TUNABLE LASER APPARATUS AND CONTROLLING METHOD FOR TUNABLE LASER 有权可激光激光模块，可激光激光装置和可控激光控制方法公开(公告)号：US20100034224A1
公开(公告)日：2010-02-11
申请号：US12535283
申请日：2009-08-04
CPC分类号： H01S5/141 , H01S5/0612 , H01S5/0617 , H01S5/06256 , H01S5/06258 , H01S5/0687 , H01S5/1032
摘要： A tunable laser module includes a tunable laser section including a gain medium and a wavelength filter having a periodic characteristic which brings about a discontinuous variation of an oscillation wavelength, and a monitoring section adapted to output a monitoring signal which periodically varies in response to the oscillation wavelength of the tunable laser section. The monitoring section includes a monitoring wavelength filter having a periodic characteristic which defines the monitoring signal. The relationship between the period of the wavelength filter and the period of the monitoring wavelength filter is set such that the monitoring signal varies when the oscillation wavelength varies discontinuously.
摘要翻译： 可调谐激光器模块包括可调激光器部分，其包括增益介质和具有导致振荡波长的不连续变化的周期性特性的波长滤波器;以及监视部分，其适于输出响应于振荡周期性变化的监视信号 可调激光器部分的波长。 监视部分包括具有限定监视信号的周期特性的监视波长滤波器。 设置波长滤波器的周期与监视波长滤波器的周期之间的关系，使得当振荡波长不连续地变化时，监视信号变化。
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公开(公告)号：US07627212B2
公开(公告)日：2009-12-01
申请号：US12181448
申请日：2008-07-29
CPC分类号： H01S5/026 , G02B6/125 , G02B2006/121 , H01S5/4025 , H01S5/50
摘要： An optical integrated device includes an optical waveguide structure formed on a semiconductor substrate and including a plurality of first channel optical waveguide portions, an optical coupler portion and a second channel optical waveguide portion, a burying layer formed from a semi-insulating semiconductor material and burying the optical waveguide structure therein such that an upper portion thereof forms a flat face and a side portion thereof forms an inclined face having a predetermined angle with respect to the semiconductor substrate, and a plurality of dummy structure bodies provided over a desired region in the proximity of at least an output side of the optical coupler portion so that radiation light from the optical coupler portion is spatially separated from signal light propagating along the second channel optical waveguide portion. The plural dummy structure bodies are provided discretely so as to be buried flat by the burying layer.
摘要翻译： 光学集成器件包括形成在半导体衬底上并包括多个第一通道光波导部分的光波导结构，光耦合部分和第二通道光波导部分，由半绝缘半导体材料形成的掩埋层和埋入 其中的光波导结构使得其上部形成平坦面，并且其侧部形成相对于半导体衬底具有预定角度的倾斜面，以及设置在邻近的所需区域上的多个虚设结构体 至少一个光耦合器部分的输出侧，使得来自光耦合器部分的辐射光与沿着第二通道光波导部分传播的信号光在空间上分离。 多个虚拟结构体离散地设置成被埋入层平坦地埋设。
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公开(公告)号：US20090052834A1
公开(公告)日：2009-02-26
申请号：US12181448
申请日：2008-07-29
IPC分类号： G02B6/12
CPC分类号： H01S5/026 , G02B6/125 , G02B2006/121 , H01S5/4025 , H01S5/50
摘要： An optical integrated device includes an optical waveguide structure formed on a semiconductor substrate and including a plurality of first channel optical waveguide portions, an optical coupler portion and a second channel optical waveguide portion, a burying layer formed from a semi-insulating semiconductor material and burying the optical waveguide structure therein such that an upper portion thereof forms a flat face and a side portion thereof forms an inclined face having a predetermined angle with respect to the semiconductor substrate, and a plurality of dummy structure bodies provided over a desired region in the proximity of at least an output side of the optical coupler portion so that radiation light from the optical coupler portion is spatially separated from signal light propagating along the second channel optical waveguide portion. The plural dummy structure bodies are provided discretely so as to be buried flat by the burying layer.
摘要翻译： 光学集成器件包括形成在半导体衬底上并包括多个第一通道光波导部分的光波导结构，光耦合部分和第二通道光波导部分，由半绝缘半导体材料形成的掩埋层和埋入 其中的光波导结构使得其上部形成平坦面，并且其侧部形成相对于半导体衬底具有预定角度的倾斜面，以及设置在邻近的所需区域上的多个虚设结构体 至少一个光耦合器部分的输出侧，使得来自光耦合器部分的辐射光与沿着第二通道光波导部分传播的信号光在空间上分离。 多个虚拟结构体离散地设置成被埋入层平坦地埋设。
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公开(公告)号：US07366220B2
公开(公告)日：2008-04-29
申请号：US11235250
申请日：2005-09-27
申请人： Kazumasa Takabayashi
发明人： Kazumasa Takabayashi
IPC分类号： H01S3/08
CPC分类号： H01S5/12 , H01S5/0425 , H01S5/06256 , H01S5/06258 , H01S5/1218 , H01S5/1221 , H01S5/124 , H01S5/125 , H01S5/4012 , H01S5/4087
摘要： A tunable laser includes an optical waveguide alternately including a gain waveguide portion and a wavelength controlling waveguide portion, and a diffraction grating. The diffraction grating includes a gain diffraction grating and a wavelength controlling diffraction grating. A wavelength controlling region is configured such that the wavelength controlling waveguide portion and the wavelength controlling diffraction grating are included therein. A gain region is configured such that the gain waveguide portion and the gain diffraction grating are included therein. The Bragg wavelength of the wavelength controlling region is longer than that of the gain region in a state in which current injection or voltage application is not performed for the wavelength controlling waveguide portion.
摘要翻译： 可调谐激光器包括交替地包括增益波导部分和波长控制波导部分的光波导和衍射光栅。 衍射光栅包括增益衍射光栅和波长控制衍射光栅。 波长控制区域被配置为使得波长控制波导部分和波长控制衍射光栅包括在其中。 增益区域被配置为使得增益波导部分和增益衍射光栅包括在其中。 在不对波长控制波导部分进行电流注入或施加电压的状态下，波长控制区域的布拉格波长比增益区域的布拉格波长长。
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