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    Wavelength Conversion Device With Microlens And Optical Package Incorporating The Same
    1.
    发明申请
    Wavelength Conversion Device With Microlens And Optical Package Incorporating The Same 有权
    具有微透镜和光学封装的波长转换器件结合在一起

    公开(公告)号：US20110205619A1

    公开(公告)日：2011-08-25

    申请号：US12709719

    申请日：2010-02-22

    Applicant: Douglas Llewellyn Butler ,  Martin Hai Hu ,  Anping Liu

    Inventor： Douglas Llewellyn Butler ,  Martin Hai Hu ,  Anping Liu

    IPC: G02F1/365

    CPC classification number: G02B6/262 ,  G02B6/4206 ,  G02F1/3558 ,  G02F1/365 ,  G02F1/377 ,  H01S3/108 ,  H01S3/109 ,  H01S5/02268 ,  H01S5/125 ,  H01S5/14

    Abstract: An optical package is provided comprising a laser diode and a wavelength conversion device. The laser diode and the wavelength conversion device define an external laser cavity and the wavelength conversion device is tilted relative to the output face of the laser diode to define a tilt angle φ that is less than approximately 85°. The input face of the wavelength conversion device comprises a pair of tapered facets and a microlens. The pair of tapered facets and the microlens are defined on the input face such that they share respective portions of the facial waveguide region on the input face, with the tapered facets occupying peripheral portions of the facial waveguide region on the input face and the microlens occupying an interior portion of the facial waveguide region on the input face. Each of the pair of tapered facets define a facet angle α within the facial waveguide region that is less than the facet angle α and is greater than approximately 45°. Additional embodiments are disclosed and claimed.

    Abstract translation: 提供了包括激光二极管和波长转换装置的光学封装。 激光二极管和波长转换装置限定外部激光腔，并且波长转换装置相对于激光二极管的输出面倾斜以限定倾斜角度＆phgr; 小于约85°。 波长转换装置的输入面包括一对锥形面和微透镜。 一对锥形面和微透镜被限定在输入面上，使得它们共享输入面上的面波导区域的相应部分，锥形面占据输入面上的面波导区域的周边部分，微透镜占据 输入面上的面波导区域的内部部分。 所述一对锥形面中的每一个在所述面波导区域内限定小于所述小平面角α并且大于大约45°的小平面角α。 公开并要求保护附加实施例。

    SYSTEM OF METHOD FOR DYNAMIC RANGE EXTENSION
    2.
    发明申请
    SYSTEM OF METHOD FOR DYNAMIC RANGE EXTENSION 有权
    动态范围扩展方法系统

    公开(公告)号：US20110090558A1

    公开(公告)日：2011-04-21

    申请号：US12970370

    申请日：2010-12-16

    Applicant: Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    Inventor： Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    IPC: H01S3/094 ,  H01S3/13 ,  H01S3/067

    CPC classification number: H01S3/06754 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1301

    Abstract: The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of an L-I curve. The method generally includes operating an optical gain medium in a fully off state or fully on state above the kink region with a PWM signal. In another aspect, the effects of the kink region may be compensated for by utilizing a lookup table. A sample of the optical power of an amplified optical signal may be used to select an entry in the lookup table that compensates for non-linearities in the kink region. In yet a further aspect, a lookup table may be used to control a pulse modulator to compensate for non-linearites in the kink region of the L-I curve.

    Abstract translation: 本发明一般涉及诸如光放大器之类的光网络设备的操作。 一方面，提供了一种操作光放大器的方法，使得光放大器的输出避免了在L-I曲线的非线性（扭结）区域中操作光学增益介质的影响。 该方法通常包括以PWM信号操作处于扭结区域的完全关闭状态或完全导通状态的光学增益介质。 在另一方面，可以通过利用查找表来补偿扭结区域的影响。 放大的光信号的光功率的样本可以用于选择补偿在扭结区域中的非线性的查找表中的条目。 在另一方面，可以使用查找表来控制脉冲调制器来补偿L-I曲线的扭结区域中的非线性元素。

    Intracavity Conversion Utilizing Narrow Band Reflective SOA
    3.
    发明申请
    Intracavity Conversion Utilizing Narrow Band Reflective SOA 审中-公开
    利用窄带反射SOA进行腔内转换

    公开(公告)号：US20110044359A1

    公开(公告)日：2011-02-24

    申请号：US12543123

    申请日：2009-08-18

    Applicant: Douglas Llewellyn Butler ,  Martin Hai Hu ,  Anping Liu

    Inventor： Douglas Llewellyn Butler ,  Martin Hai Hu ,  Anping Liu

    IPC: H01S3/10 ,  H01S5/187

    CPC classification number: H01S5/14 ,  H01S3/109 ,  H01S5/0612 ,  H01S5/06256

    Abstract: An external cavity laser source is provided comprising an external laser cavity, a tunable distributed Bragg reflector (DBR), a DBR tuning element, an output reflector, a semiconductor optical amplifier (SOA), a frequency-selective optical coupler/reflector, and a wavelength conversion device. The tunable DBR, the DBR tuning element, the SOA, and the output reflector are configured to generate a fundamental laser signal characterized by a fundamental bandwidth that is narrower than the QPM bandwidth of the wavelength conversion device and can be tuned to a fundamental center wavelength within the QPM bandwidth. The frequency-selective optical coupler/reflector is configured for substantially non-reflective two-way transmission of optical signals at the fundamental center wavelength and is further configured for substantially complete reflection of wavelength-converted optical signals generated by the wavelength conversion device. The output reflector is configured for substantially non-reflective transmission of wavelength-converted optical signals generated by the wavelength conversion device and for substantially complete reflection of optical signals at the fundamental center wavelength. Additional embodiments are disclosed and claimed.

    Abstract translation: 提供了外腔激光源，其包括外部激光腔，可调分布布拉格反射器（DBR），DBR调谐元件，输出反射器，半导体光放大器（SOA），频率选择性光耦合器/反射器 波长转换装置。 可调谐DBR，DBR调谐元件，SOA和输出反射器被配置为产生基本激光信号，该基本激光信号的特征在于比波长转换器件的QPM带宽窄的基本带宽，并且可以调谐到基本中心波长 在QPM带宽内。 频率选择性光耦合器/反射器被配置为用于在基本中心波长处的光信号的基本上非反射双向传输，并且还被配置为用于基本上完全反射由波长转换装置产生的波长转换的光信号。 输出反射器被配置为用于由波长转换器件产生的波长转换的光信号的基本上不反射的透射，并且用于基本中心波长处的光信号的基本上完全的反射。 公开并要求保护附加实施例。

    System of method for dynamic range extension
    4.
    发明授权
    System of method for dynamic range extension 有权
    动态范围扩展方法系统

    公开(公告)号：US07856037B2

    公开(公告)日：2010-12-21

    申请号：US11687444

    申请日：2007-03-16

    Applicant: Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    Inventor： Aravanan Gurusami ,  Douglas Llewellyn Butler ,  Timothy K. Zahnley ,  Scott R. Dahl ,  Peter G. Wigley

    IPC: H01S3/13 ,  H01S3/00

    CPC classification number: H01S3/06754 ,  H01S3/094003 ,  H01S3/094076 ,  H01S3/0941 ,  H01S3/10069 ,  H01S3/1301

    Abstract: The present invention generally relates to the operation of optical network equipment such as optical amplifiers. In one aspect, a method of operating an optical amplifier is provided such that output of the optical amplifier avoids the effects of operating an optical gain medium in a non-linear (kink) region of an L-I curve. The method generally includes operating an optical gain medium in a fully off state or fully on state above the kink region with a PWM signal. In another aspect, the effects of the kink region may be compensated for by utilizing a lookup table. A sample of the optical power of an amplified optical signal may be used to select an entry in the lookup table that compensates for non-linearities in the kink region. In yet a further aspect, a lookup table may be used to control a pulse modulator to compensate for non-linearites in the kink region of the L-I curve.

    Abstract translation: 本发明一般涉及诸如光放大器之类的光网络设备的操作。 一方面，提供了一种操作光放大器的方法，使得光放大器的输出避免了在L-I曲线的非线性（扭结）区域中操作光学增益介质的影响。 该方法通常包括以PWM信号操作处于扭结区域的完全关闭状态或完全导通状态的光学增益介质。 在另一方面，可以通过利用查找表来补偿扭结区域的影响。 放大的光信号的光功率的样本可以用于选择补偿在扭结区域中的非线性的查找表中的条目。 在另一方面，可以使用查找表来控制脉冲调制器来补偿L-I曲线的扭结区域中的非线性元素。

    Minimizing Power Variations In Laser Sources
    5.
    发明申请
    Minimizing Power Variations In Laser Sources 审中-公开
    最小化激光源的功率变化

    公开(公告)号：US20090252187A1

    公开(公告)日：2009-10-08

    申请号：US12333967

    申请日：2008-12-12

    Applicant: Anthony Sebastian Bauco ,  Douglas Llewellyn Butler ,  Martin Hai Hu ,  Dragan Pikula ,  Daniel Ohen Ricketts

    Inventor： Anthony Sebastian Bauco ,  Douglas Llewellyn Butler ,  Martin Hai Hu ,  Dragan Pikula ,  Daniel Ohen Ricketts

    IPC: H01S3/13

    CPC classification number: H01S5/06255 ,  H01S5/0092 ,  H01S5/06256 ,  H01S5/06835 ,  H01S5/0687 ,  H04N9/3129 ,  H04N9/3161

    Abstract: The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a projected laser image is generated utilizing an output beam of the semiconductor laser. A gain current control signal is generated by a laser feedback loop to control the gain section of the semiconductor laser. Wavelength fluctuations of the semiconductor laser are narrowed by incorporating a wavelength recovery operation in a drive current of the semiconductor laser and by initiating the wavelength recovery operations as a function of the gain current control signal or an optical intensity error signal. Additional embodiments are disclosed and claimed.

    Abstract translation: 本发明一般涉及半导体激光器和激光投射系统。 根据本发明的一个实施例，利用半导体激光器的输出光束产生投射的激光图像。 增益电流控制信号由激光反馈回路产生，以控制半导体激光器的增益部分。 通过在半导体激光器的驱动电流中并入波长恢复操作并且通过作为增益电流控制信号或光强度误差信号的函数启动波长恢复操作来使半导体激光器的波长波动变窄。 公开并要求保护附加实施例。

    Measurement of Raman gain spectrum in optical fiber
    6.
    发明授权
    Measurement of Raman gain spectrum in optical fiber 失效
    光纤中拉曼增益谱的测量

    公开(公告)号：US6081323A

    公开(公告)日：2000-06-27

    申请号：US26429

    申请日：1998-02-19

    Applicant: Daniel Mahgerefteh ,  Julius Goldhar ,  Douglas Llewellyn Butler ,  Lance Gregory Joneckis

    Inventor： Daniel Mahgerefteh ,  Julius Goldhar ,  Douglas Llewellyn Butler ,  Lance Gregory Joneckis

    IPC: G01N21/65 ,  G01N21/00

    CPC classification number: H04B10/0731 ,  H04B10/2916

    Abstract: An apparatus and method for measuring the spectral dependence of the Raman gain coefficient in optical fibers is presented. This approach measures the power level of Raman scattering in both a walk-off limited region and a physical fiber length limited region and, from these measurements, extracts the spectral dependence of the Raman gain coefficient. Access to these two regions is accomplished through control of the excitation pulse temporal width and relies on fiber dispersion to separate the excitation light from the Raman scattered light for short pulse widths. This approach measures the spectral dependence of the Raman gain without the necessity of absolute power measurement of the Raman scattered light, the need for a reference standard, or the need of a frequency tunable secondary optical source.

    Abstract translation: 提出了一种用于测量光纤中拉曼增益系数的频谱依赖性的装置和方法。 这种方法测量了离散限制区域和物理光纤长度限制区域中拉曼散射的功率水平，并从这些测量中提取拉曼增益系数的光谱依赖性。 通过控制激发脉冲时间宽度来实现对这两个区域的访问，并且依赖于光纤色散以将激发光与来自拉曼散射光的脉冲宽度分开。 该方法测量拉曼增益的频谱依赖性，而不需要对拉曼散射光进行绝对功率测量，需要参考标准，或需要频率可调谐的次级光源。

    MULTI-CORE OPTICAL FIBER
    10.
    发明申请
    MULTI-CORE OPTICAL FIBER 有权
    多芯光纤

    公开(公告)号：US20160231508A1

    公开(公告)日：2016-08-11

    申请号：US15099682

    申请日：2016-04-15

    Applicant: Douglas Llewellyn Butler ,  Andreas Matiss ,  Eric Stephen ten Have

    Inventor： Douglas Llewellyn Butler ,  Andreas Matiss ,  Eric Stephen ten Have

    IPC: G02B6/30 ,  G02B6/12 ,  G02B6/34 ,  G02B6/02

    CPC classification number: G02B6/30 ,  G02B6/02042 ,  G02B6/12004 ,  G02B6/262 ,  G02B6/34 ,  G02B6/4214 ,  G02B6/4249 ,  G02B6/43

    Abstract: A multi-core optical fiber (100) comprises a plurality of optical cores (1, . . . , 8) to respectively transmit light and a plurality of cleaves (110a, 100b, 110c, 110d, 110e, 110f, 110g, 110h) extending from a surface (102) of the multi-core optical fiber (100) into the multi-core optical fiber. A first cleave (110a) comprises a surface (111a) to couple light out of the optical fiber, wherein a first optical core (1) ends at the surface (111a) of the first cleave (110a). An at least one second cleave (110b, . . . , 110h) comprises a surface (111b, . . . , 111h) to couple light out of the optical fiber, wherein at least one second optical core (2, . . . , 8) ends at the surface (111b, . . . , 111h) of the at least one second cleave (110b, . . . , 110h). The first and the at least one second cleave (110a, . . . , 110h) are staggered along the longitudinal axis (101) of the multi-core optical fiber (100).

    Abstract translation: 多核光纤（100）包括分别透射光和多个分裂（110a，100b，110c，110d，110e，110f，110g，110h）的多个光学核（1 ...，8） 从多芯光纤（100）的表面（102）延伸到多芯光纤中。 第一切口（110a）包括将光耦合到光纤中的表面（111a），其中第一光纤芯（1）在第一切割（110a）的表面（111a）处终止。 至少一个第二切割（110b，...，110h）包括将光耦合到光纤之外的表面（111b，...，111h），其中至少一个第二光纤（2，...， 8）终止于至少一个第二裂开（110b，...，110h）的表面（111b，...，111h）。 第一和至少一个第二裂开（110a，...，110h）沿着多芯光纤（100）的纵向轴线（101）交错。

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