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    Wavelength tunable laser apparatus and wavelength control method
    1.
    发明授权
    Wavelength tunable laser apparatus and wavelength control method 有权
    波长可调谐激光装置及波长控制方法

    公开(公告)号：US07733933B2

    公开(公告)日：2010-06-08

    申请号：US11833271

    申请日：2007-08-03

    申请人： Hideo Arimoto ,  Kazuhiro Ito ,  Hiroyasu Sasaki

    发明人： Hideo Arimoto ,  Kazuhiro Ito ,  Hiroyasu Sasaki

    IPC分类号： H01S3/00

    CPC分类号： H01S5/146 ,  H01S5/06255

    摘要： Included are: a gain chip having a gain unit and a phase control region; a current supply for causing a positive current to flow to the phase control region; a voltage supply for applying a bias voltage to the phase control region; and a control unit for selectively driving the current supply or the voltage supply depending on a direction of the wavelength shift. The control unit drives the current supply when a laser wavelength is to be shifted to a shorter wavelength side from a wavelength with the current supply and the voltage supply being turned off, and drives the voltage supply when the laser wavelength is to be shifted to a longer wavelength side from a wavelength with the current supply and the voltage supply being turned off.

    摘要翻译： 包括：具有增益单元和相位控制区域的增益芯片; 用于使正电流流向相位控制区域的电流源; 用于向相位控制区域施加偏置电压的电压源; 以及控制单元，用于根据波长偏移的方向选择性地驱动电流源或电压源。 当激光波长从电流供应和电压供应关闭的波长移动到较短波长侧时，控制单元驱动电流源，并且当激光波长被转移到 来自具有电流供应和电压供应的波长的较长波长侧被关闭。

    Laser device and controlling method therefor
    2.
    发明授权
    Laser device and controlling method therefor 有权
    激光装置及其控制方法

    公开(公告)号：US08000359B2

    公开(公告)日：2011-08-16

    申请号：US12332384

    申请日：2008-12-11

    申请人： Hiroyasu Sasaki ,  Hideo Arimoto

    发明人： Hiroyasu Sasaki ,  Hideo Arimoto

    IPC分类号： H01S5/14 ,  H01S5/0687

    CPC分类号： H01S5/141 ,  H01S5/02284 ,  H01S5/0427 ,  H01S5/0625 ,  H01S5/0687

    摘要： A laser device capable of preventing deterioration of a light signal and a controlling method therefor are provided. A wavelength tunable laser module provided with a resonator including the wavelength tunable filter and a semiconductor light amplifier having a phase adjustment region and a light amplifying region, in which a wavelength margin between a peak transmission wavelength of a wavelength tunable filter and a mode hop occurring wavelength on a short wave side is smaller than that on a long wave side includes: a wavelength tunable laser module controller including an optical output sampling portion for detecting light intensity of light emitted from the resonator, a dither signal source for generating a dither signal for varying a phase adjustment signal to be applied to the phase adjustment region so that the detected light intensity becomes the maximum, and an FM signal source for generating an FM signal for oscillating the phase adjustment signal to be applied to the phase adjustment region with a period shorter than a variation period of the dither signal. The optical output sampling portion detects the light intensity in synchronization with oscillation of the phase adjustment signal by the FM signal.

    摘要翻译： 提供一种能够防止光信号劣化的激光装置及其控制方法。 一种波长可调激光模块，其具有包括波长可调滤波器的谐振器和具有相位调整区域和光放大区域的半导体光放大器，其中波长可调滤波器的峰值传输波长与发生跳跃的峰值波长之间 短波侧的波长小于长波侧的波长包括：波长可调激光器模块控制器，包括用于检测从谐振器发射的光的光强度的光输出采样部分，用于产生用于产生抖动信号的抖动信号源 改变要施加到相位调整区域的相位调整信号，使得检测到的光强度变得最大;以及FM信号源，用于产生用于使相位调整信号振荡的相关调整信号的FM信号，该相位调整信号以周期 短于抖动信号的变化周期。 光输出采样部分通过FM信号与相位调整信号的振荡同步地检测光强度。

    Laser Device and Controlling Method Therefor
    3.
    发明申请
    Laser Device and Controlling Method Therefor 有权
    激光装置及其控制方法

    公开(公告)号：US20090262762A1

    公开(公告)日：2009-10-22

    申请号：US12332384

    申请日：2008-12-11

    申请人： Hiroyasu Sasaki ,  Hideo Arimoto

    发明人： Hiroyasu Sasaki ,  Hideo Arimoto

    IPC分类号： H01S3/10 ,  H01S3/13

    CPC分类号： H01S5/141 ,  H01S5/02284 ,  H01S5/0427 ,  H01S5/0625 ,  H01S5/0687

    摘要： A laser device capable of preventing deterioration of a light signal and a controlling method therefor are provided. A wavelength tunable laser module provided with a resonator including the wavelength tunable filter and a semiconductor light amplifier having a phase adjustment region and a light amplifying region, in which a wavelength margin between a peak transmission wavelength of a wavelength tunable filter and a mode hop occurring wavelength on a short wave side is smaller than that on a long wave side includes: a wavelength tunable laser module controller including an optical output sampling portion for detecting light intensity of light emitted from the resonator, a dither signal source for generating a dither signal for varying a phase adjustment signal to be applied to the phase adjustment region so that the detected light intensity becomes the maximum, and an FM signal source for generating an FM signal for oscillating the phase adjustment signal to be applied to the phase adjustment region with a period shorter than a variation period of the dither signal. The optical output sampling portion detects the light intensity in synchronization with oscillation of the phase adjustment signal by the FM signal.

    摘要翻译： 提供一种能够防止光信号劣化的激光装置及其控制方法。 一种波长可调激光模块，其具有包括波长可调滤波器的谐振器和具有相位调整区域和光放大区域的半导体光放大器，其中波长可调滤波器的峰值传输波长与发生跳跃的峰值波长之间 短波侧的波长小于长波侧的波长包括：波长可调激光器模块控制器，包括用于检测从谐振器发射的光的光强度的光输出采样部分，用于产生用于产生抖动信号的抖动信号源 改变要施加到相位调整区域的相位调整信号，使得检测到的光强度变得最大;以及FM信号源，用于产生用于使相位调整信号振荡的相关调整信号的FM信号，该相位调整信号以周期 短于抖动信号的变化周期。 光输出采样部分通过FM信号与相位调整信号的振荡同步地检测光强度。

    Wavelength tunable filter and wavelength tunable laser module
    7.
    发明授权
    Wavelength tunable filter and wavelength tunable laser module 有权
    波长可调滤波器和波长可调激光模块

    公开(公告)号：US08179931B2

    公开(公告)日：2012-05-15

    申请号：US12622785

    申请日：2009-11-20

    申请人： Hideo Arimoto ,  Masahiro Aoki

    发明人： Hideo Arimoto ,  Masahiro Aoki

    IPC分类号： H01S3/10

    CPC分类号： G02F1/3133 ,  H01S5/06256 ,  H01S5/1032 ,  H01S5/1035

    摘要： A wavelength tunable filter and a wavelength tunable laser module are a codirectional coupler type whose characteristics do not vary significantly with a process error. They are structured so as to include a semiconductor substrate which has a first optical waveguide and a second optical waveguide. The first and the second optical waveguides are extended from a first side of the semiconductor substrate to an opposing second side thereof. The first optical waveguide includes a first core layer, which has a planar layout having periodic convexes and concaves, and a pair of electrodes, which vertically sandwich the first core layer. The second optical waveguide includes a second core layer, which has a lower refractive index than the first core layer. Further, a layer having the same composition and film thickness as the second core layer is placed under the first core layer.

    摘要翻译： 波长可调滤波器和波长可调激光器模块是一种同向耦合器类型，其特性与处理误差不会显着变化。 它们被构造成包括具有第一光波导和第二光波导的半导体衬底。 第一和第二光波导从半导体衬底的第一侧延伸到相对的第二侧。 第一光波导包括具有周期性凸起和凹陷的平面布局的第一芯层和垂直夹着第一芯层的一对电极。 第二光波导包括具有比第一芯层低的折射率的第二芯层。 此外，具有与第二芯层相同的组成和膜厚度的层被放置在第一芯层下方。

    Semiconductor laser apparatus
    8.
    发明申请
    Semiconductor laser apparatus 有权
    半导体激光装置

    公开(公告)号：US20090268772A1

    公开(公告)日：2009-10-29

    申请号：US12385735

    申请日：2009-04-17

    申请人： Hideo Arimoto ,  Masahiro Aoki

    发明人： Hideo Arimoto ,  Masahiro Aoki

    IPC分类号： H01S5/026 ,  H01S3/08

    CPC分类号： H01S5/141 ,  H01S5/02248 ,  H01S5/02284 ,  H01S5/0267 ,  H01S5/1082 ,  H01S5/1085 ,  H01S5/18 ,  H01S5/227 ,  H01S5/4087

    摘要： A wavelength variable laser smaller in size than the conventional one can be achieved by arranging a gain chip, an etalon filter and a fifth reflective mirror on an AlN submount and longitudinally integrating the gain chip in which a 45° mirror and a lens are integrated and the etalon filter. A laser cavity has a structure in which light passes through an active layer from a first reflective mirror realized by an end surface of the gain chip, is reflected by the 45° mirror at an angle of 90° and then passes through the lens. The light having passed through the lens is converted into parallel light, passes through the etalon filter and reaches the fifth reflective mirror and is then reflected. The reflected light returns through the same optical path and reaches the first reflective mirror realized by the end surface of the gain chip.

    摘要翻译： 可以通过在AlN基座上布置增益芯片，标准具滤波器和第五反射镜并纵向积分其中集成45°反射镜和透镜的增益芯片来实现尺寸比常规小的波长可变激光器， 标准具过滤器。 激光腔具有光从通过增益芯片的端面实现的第一反射镜穿过有源层的结构，被45°反射镜以90°的角度反射，然后通过透镜。 通过透镜的光被转换为平行光，通过标准具过滤器并到达第五反射镜，然后被反射。 反射光通过相同的光路返回并到达由增益芯片的端面实现的第一反射镜。