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    Optical array for generating a broadband spectrum
    31.
    发明申请
    Optical array for generating a broadband spectrum 审中-公开
    用于产生宽带频谱的光阵列

    公开(公告)号：US20050117841A1

    公开(公告)日：2005-06-02

    申请号：US10514051

    申请日：2003-05-07

    Applicant: Bernd Braun ,  Guenter Hollemann

    Inventor： Bernd Braun ,  Guenter Hollemann

    IPC: G02F1/35 ,  G02F1/365 ,  G02B6/26

    CPC classification number: G02F1/365 ,  G02F2001/3509 ,  G02F2201/02

    Abstract: Disclosed is an optical array for generating a broadband spectrum. The aim of the invention is to reduce the technical complexity of said optical array while keeping the source of laser radiation compact and adjusting in a simple manner the wavelength range of the broadband spectrum to the sensitivity range of conventional semiconductor detectors. Said aim is achieved by coupling in an optically adapted manner a passively mode-coupled solid body laser which supplies picosecond impulses having an initial wavelength that lies within the infrared range to a photonic fiber. A radiation performance interval of the broadband spectrum, which is maintained at an essentially steady intensity, is set within a wavelength range of 700 nm to 1000 nm below the initial wavelength by adjusting the dispersion of said photonic fiber to the initial wavelength. The broadband source of radiation is highly brilliant and can be used in white light interferometry (OCT, coherence radar, spectral radar) and in spectroscopy (pump-probe spectroscopy), among others.

    Abstract translation: 公开了一种用于产生宽带频谱的光学阵列。 本发明的目的是降低所述光学阵列的技术复杂性，同时保持激光辐射源的紧凑并且以简单的方式将宽带频谱的波长范围调整到常规半导体检测器的灵敏度范围。 所述目的通过以光学适应的方式耦合被动模式耦合的固体激光器来实现，其将具有位于红外范围内的初始波长的皮秒脉冲提供给光子纤维。 通过将所述光子纤维的色散调节到初始波长，将保持在基本上稳定的强度的宽带光谱的辐射性能间隔设置在低于初始波长的700nm至1000nm的波长范围内。 宽带辐射源是非常辉煌的，可用于白光干涉测量（OCT，相干雷达，光谱雷达）和光谱（泵浦 - 探针光谱）等。

    Laser assisted thermal poling of silica based waveguides
    32.
    发明授权
    Laser assisted thermal poling of silica based waveguides 失效
    二氧化硅基波导的激光辅助热极化

    公开(公告)号：US06792166B1

    公开(公告)日：2004-09-14

    申请号：US10049334

    申请日：2002-05-30

    Applicant: Wei Xu ,  Danny Wong ,  Graham Town ,  John Canning ,  Paul Blazkiewicz

    Inventor： Wei Xu ,  Danny Wong ,  Graham Town ,  John Canning ,  Paul Blazkiewicz

    IPC: G02F1035

    CPC classification number: G02F1/3558 ,  G02F1/3555 ,  G02F1/365 ,  G02F1/383 ,  G02F2201/02 ,  G02F2202/09

    Abstract: A method of thermally poling a silica based waveguide (12) comprises exposing a region of the waveguide (12) to an electric field (for example, via capillary electrodes (22, 24) inserted into holes in the waveguide); directing a laser beam (18) into the region exposed to the electric field to effect localized heating of the region via direct absorption; and scanning the laser beam (18) over the region at a rate selected to avoid heating of the region above the glass transition temperature. Reversing the electric field while scanning the laser beam (18) allows the formation of periodic poled gratings. The waveguide (12) can comprise an optical fiber.

    Abstract translation: 一种热极化基于二氧化硅的波导（12）的方法包括将波导（12）的区域暴露于电场（例如，通过插入波导中的孔中的毛细管电极（22,24））; 将激光束（18）引导到暴露于电场的区域中以通过直接吸收实现区域的局部加热; 以及以选择的速率在所述区域上扫描激光束（18），以避免加热所述区域高于玻璃化转变温度。 扫描激光束（18）时反转电场允许形成周期性极化光栅。 波导（12）可以包括光纤。

    Optical wavelength converter
    33.
    发明申请
    Optical wavelength converter 失效

    公开(公告)号：US20040100681A1

    公开(公告)日：2004-05-27

    申请号：US10333920

    申请日：2003-07-02

    Inventor： Anders Bjarklev ,  Jes Broeng ,  Stig Eigil Barkou Libori

    IPC: G02F002/02

    CPC classification number: G02B6/03627 ,  B82Y20/00 ,  G02B6/02 ,  G02B6/02338 ,  G02B6/02347 ,  G02B6/02357 ,  G02B6/0238 ,  G02B6/1225 ,  G02F1/3515 ,  G02F1/365 ,  G02F2201/02 ,  G02F2202/32

    Abstract: In accordance with the invention there is provided an optical wavelength conversion device. The conversion device comprises a micro-structured optical waveguide, which includes sections with a non-linear material having an index of refraction which changes as a non-linear function of light intensity. The optical waveguide includes a light guiding core region, and the waveguide is dimensioned for providing spatial overlap between the sections filled with the non-linear material and light propagating within the waveguide. The conversion device further comprises a first optical light source for introducing light into the waveguide in a mode guided along the core, and a second intensity modulated light source for introducing encoding light into the waveguide in such a manner that it illuminates the sections filled with a non-linear material. The second light source has an intensity modulation sufficient to change the refractive index of the non-linear material by an amount sufficient to encode or modulate the light from the first optical light source accordingly, whereby the encoding takes place through the effect of leaking light from the first light source from the inside of the guiding core to the outside of the guiding core. The micro-structured optical waveguide may comprisean optical fibre, in which the light from the first light source may be guided by different types of waveguiding principles including total internal reflection or by photonic bandgap effects. In an alternative embodiment the micro-structured optical waveguide may comprise an optical planar waveguide. The conversion device includes embodiments in which the encoding light from the secondlight source and the light to be encoded or modulated from the first light source are co-propagating, are counter-propagating, or where the encoding light has a propagation direction different to the propagation direction of the light to be encoded. According to the invention there is also provided a micro-structured optical waveguide, which may have an axial direction, which waveguideincludes sections that are elongated in the axial direction and comprise a non-linear material having an index of refraction whichchanges as a non-linear function of light intensity. This optical waveguide, which may be an optical fibre, includes a light guiding core region, and the waveguide is dimensioned for providing spatial overlap between the sections filled with the non-linear material and light propagating within the waveguide. There is furthermore provided an optical switching device and an optical intensity limiting device which may be based on the micro-structured optical waveguide of the invention.

    METHOD AND SYSTEM FOR GENERATING SHORT PULSE SIGNALS
    34.
    发明申请
    METHOD AND SYSTEM FOR GENERATING SHORT PULSE SIGNALS 有权
    用于产生短脉冲信号的方法和系统

    公开(公告)号：US20040028355A1

    公开(公告)日：2004-02-12

    申请号：US10214532

    申请日：2002-08-08

    Inventor： Jianjun Yu ,  Keisuke Kojima

    IPC: G02B006/26

    CPC classification number: H04B10/505 ,  G02F1/365 ,  G02F2201/02 ,  G02F2203/26 ,  H04B10/5051 ,  H04B10/508

    Abstract: A short pulse generation system and method of generating a short pulse signal are provided. The system includes a fiber chain having an input for receiving an optical signal having a plurality of optical pulses. The fiber chain is nonlinear with respect to the optical signal and includes a first normal fiber segment having a relatively small chromatic parameter, a first abnormal fiber segment having a relatively large chromatic parameter coupled to an output of the first normal fiber segment, and a second abnormal fiber segment having a relatively small chromatic parameter coupled to an out of the first abnormal fiber segment. The system includes a filter stage coupled to an output of the fiber chain and that has a transparent wavelength selected to regenerate the signal. A short pulse signal is produced when the optical signal is coupled to the input.

    Abstract translation: 提供了一种产生短脉冲信号的短脉冲发生系统和方法。 该系统包括具有用于接收具有多个光脉冲的光信号的输入的光纤链。 纤维链相对于光信号是非线性的，并且包括具有相对较小的色彩参数的第一正常光纤段，具有耦合到第一正常光纤段的输出的相对较大的色参数的第一异常光纤段， 具有耦合到第一异常纤维段外的相对较小的色参数的异常光纤段。 该系统包括耦合到光纤链的输出并且具有选择用于再生信号的透明波长的滤波器级。 当光信号耦合到输入端时产生短脉冲信号。

    Wavelength tunable light source and pulse light source
    37.
    发明申请
    Wavelength tunable light source and pulse light source 失效
    波长可调光源和脉冲光源

    公开(公告)号：US20030043451A1

    公开(公告)日：2003-03-06

    申请号：US10228357

    申请日：2002-08-27

    Inventor： Masao Kato ,  Kazuo Fujiura ,  Takashi Kurihara ,  Kenji Kurokawa

    IPC: G02F002/02 ,  H04J014/02 ,  G02F001/35

    CPC classification number: G02F1/353 ,  G02F1/3513 ,  G02F2201/02

    Abstract: A wavelength tunable light source includes an optical pulse generating section for generating an optical pulse; an amplitude control section for controlling the amplitude of the optical pulse generated by the optical pulse generating section by superimposing control light on the optical pulse to output a short optical pulse; and an optical frequency converting section for converting the frequency of the short optical pulse by launching the short optical pulse output from the amplitude control section into an optical nonlinear medium whose refractive index varies in response to the electric-field intensity of the incident light. The amplitude control section can be configured such that it carries out the time division multiplexing and outputs the short optical pulse, thereby constituting an optical pulse light source.

    Abstract translation: 波长可调光源包括用于产生光脉冲的光脉冲产生部分; 幅度控制部分，用于通过将控制光叠加在光脉冲上以输出短光脉冲来控制由光脉冲发生部分产生的光脉冲的幅度; 以及光频变换部，其通过将从振幅控制部输出的短光脉冲发射到其折射率根据入射光的电场强度而变化的光学非线性介质来转换短光脉冲的频率。 幅度控制部分可以被配置为使得其执行时分复用并输出短光脉冲，从而构成光脉冲光源。

    Add/drop acousto-optic filter
    38.
    发明授权
    Add/drop acousto-optic filter 有权
    添加/关闭声光滤波器

    公开(公告)号：US06357913B1

    公开(公告)日：2002-03-19

    申请号：US09577197

    申请日：2000-05-23

    Applicant: Byoung Yoon Kim ,  Seok Hyun Yun ,  Wayne V. Sorin

    Inventor： Byoung Yoon Kim ,  Seok Hyun Yun ,  Wayne V. Sorin

    IPC: G02B642

    CPC classification number: G02F1/125 ,  G02B6/02071 ,  G02F1/0134 ,  G02F2201/02 ,  G02F2203/055 ,  G02F2203/585 ,  H04J14/0208 ,  H04J14/0209 ,  H04J14/0213

    Abstract: A drop AOTF has a first AOTF that includes an optical fiber with a longitudinal axis, an acoustic wave propagation member with a proximal end and a distal end and an acoustic wave propagation member. The acoustic wave propagation member propagating an acoustic wave from the proximal to the distal end of the acoustic wave propagation member. An optical circulator, with first, second and third ports, is coupled to the first AOTF at the third port. A mode coupler is coupled to the first AOTF. A orthogonal-polarization reflective mirror is coupled to the mode coupler.

    Abstract translation: 一滴AOTF具有包括具有纵向轴线的光纤，具有近端和远端的声波传播部件和声波传播部件的第一AOTF。 声波传播部件将声波从声波传播部件的近端传播到远端。 具有第一，第二和第三端口的光循环器在第三端口处耦合到第一AOTF。 模式耦合器耦合到第一AOTF。 正交偏振反射镜耦合到模式耦合器。

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