中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

107 records (took 0.021 seconds)

    METHOD AND APPARATUS FOR RECORDING AN OPTICAL GRATING IN A PHOTOSENSITIVE MEDIUM
    1.
    发明申请
    METHOD AND APPARATUS FOR RECORDING AN OPTICAL GRATING IN A PHOTOSENSITIVE MEDIUM 审中-公开
    用于记录光敏介质中的光学蚀刻的方法和装置

    公开(公告)号：WO2003032038A1

    公开(公告)日：2003-04-17

    申请号：PCT/CA2002/001147

    申请日：2002-07-23

    Applicant: TERAXION INC.

    Inventor： PAINCHAUD, Yves ,  MAILLOUX, Alain ,  CHOTARD, Hélène

    IPC: G02B6/16

    CPC classification number: G02B6/02152 ,  G02B6/02138 ,  G02B6/124 ,  G02B2006/12173

    Abstract: A method and an apparatus (10) for recording optical gratings in a photosensitive medium (14) are provided. The invention uses a phase mask (16) in combination with a scanning of the recording light beam (20). The phase mask, or alternatively the photosensitive medium, is translated along a direction parallel to the scanning of the light beam, so that the period of the recorded grating may be locally adjusted. To ensure a proper recording efficiency over a large wavelength range, an appropriately selected wavefront curvature is provided in the light beam. The method of the invention is particularly advantageous for the recording of superimposed grating components in a photosensitive medium.

    Abstract translation: 提供了一种用于在光敏介质（14）中记录光栅的方法和装置（10）。 本发明使用与记录光束（20）的扫描相结合的相位掩模（16）。 相位掩模或者光敏介质沿着平行于光束扫描的方向平移，从而可以局部地调整记录光栅的周期。 为了确保在大波长范围内的适当的记录效率，在光束中提供适当选择的波前曲率。 本发明的方法对于在光敏介质中记录叠加的光栅组件是特别有利的。

    OPTICAL STRUCTURE FOR THE COMPENSATION OF CHROMATIC DISPERSION IN A LIGHT SIGNAL
    2.
    发明申请
    OPTICAL STRUCTURE FOR THE COMPENSATION OF CHROMATIC DISPERSION IN A LIGHT SIGNAL 审中-公开
    用于补偿光信号中色度分布的光学结构

    公开(公告)号：WO2003010586A2

    公开(公告)日：2003-02-06

    申请号：PCT/CA2002/001159

    申请日：2002-07-25

    Applicant: TERAXION INC.

    Inventor： PAINCHAUD, Yves ,  LACHANCE, Richard ,  LELIEVRE, Sylviane

    IPC: G02B27/00

    CPC classification number: H04B10/2519 ,  G02B6/02085 ,  G02B6/02204 ,  G02B6/2932 ,  G02B6/29322 ,  G02B6/29394 ,  G02B6/29395 ,  G02B6/29398

    Abstract: An optical structure and devices based thereon for the compensation of chromatic dispersion in a multi-channel light signal are provided. The optical structure includes a waveguide and a Bragg grating provided therein. The Bragg grating has a plurality of grating components, each associated with one or a few of the channels to be compensated. The period of each grating component is selected to allow compensation of chromatic dispersion experienced by this particular channel or these particular channels, thereby taking into account the wavelength-dependent dispersion slope of the light signal. Tuning means may also be provided in order to adjust the dispersion of the grating components to the required values.

    Abstract translation: 提供了一种用于补偿多通道光信号中色散的光学结构及其基础的装置。 光学结构包括其中提供的波导和布拉格光栅。 布拉格光栅具有多个光栅分量，每个光栅分量与要补偿的一个或几个通道相关联。 选择每个光栅分量的周期以允许补偿由该特定通道或这些特定通道经历的色散，从而考虑到光信号的波长相关色散斜率。 还可以提供调谐装置以便将光栅部件的色散调整到所需的值。

    IMPROVED PHASE MASK AND METHOD FOR FABRICATION OF FBGS
    3.
    发明专利
    IMPROVED PHASE MASK AND METHOD FOR FABRICATION OF FBGS 未知

    公开(公告)号：CA2420521A1

    公开(公告)日：2004-08-27

    申请号：CA2420521

    申请日：2003-02-27

    Applicant: TERAXION INC

    Inventor： ROTHENBERG JOSHUA E

    IPC: G02B5/18

    Abstract: An apodized fiber Bragg grating, and a phase mask, method and system for making such a grating are disclosed. The refractive index profile of the grating has a periodic apodization phase component which is designed so that the grating fringes reflecting light in a spectral region of interest are apodized, by generating spurious reflection features outside of this spectral region of interest. Apodization is therefore provided through a phase variation of the grating as opposed to an amplitude variation. The phase component is added to the profile of the phase mask grating corrugations to obtain the phase-apodized grating.

    ATHERMALLY-PASSIVE, ADJUSTABLE, CHROMATIC DISPERSION COMPENSATOR USING A LINEARLY CHIRPED FBG
    4.
    发明专利
    ATHERMALLY-PASSIVE, ADJUSTABLE, CHROMATIC DISPERSION COMPENSATOR USING A LINEARLY CHIRPED FBG 未知

    公开(公告)号：CA2418382A1

    公开(公告)日：2004-08-04

    申请号：CA2418382

    申请日：2003-02-04

    Applicant: TERAXION INC

    Inventor： PELLETIER FRANCOIS ,  VO VAN ANDRE

    IPC: G02B6/02 ,  H04B10/2519 ,  G02B26/00 ,  G02B26/02 ,  H04J14/02 ,  H04B10/18

    Abstract: The present invention discloses an athermally-passive adjustable chromat ic dispersion device. The device comprises an optical fiber grating which is fixed on its length to an elongated beam member that can be flexed so that a non- uniform tensile strain induced in the grating reconfigures the group delay response. The chirp of the grating is changed by the bending of the bar, allowing adjustab le chromatic dispersion compensation. A multi-material construction allows the package to passively compensate for the natural temperature dependence of th e filter resonance wavelength by varying the strain in the fiber in response t o changes in the ambient temperature. The device also allows for adjustment of the central filter wavelength without affecting the grating integrity.

    ADJUSTABLE ATHERMAL PACKAGE FOR OPTICAL FIBER DEVICES
    6.
    发明专利
    ADJUSTABLE ATHERMAL PACKAGE FOR OPTICAL FIBER DEVICES 未知

    公开(公告)号：CA2357242A1

    公开(公告)日：2002-08-22

    申请号：CA2357242

    申请日：2001-09-12

    Applicant: TERAXION INC

    Inventor： VO VAN ANDRE ,  GUY MARTIN ,  LACHANCE RICHARD L ,  PELLETIER MARTIN ,  MORIN MICHEL

    IPC: G02B5/18 ,  G02B6/00 ,  G02B6/02 ,  G02B6/34 ,  G02B26/00 ,  G02B6/18

    Abstract: An athermally packaged optical fiber device, such as a Bragg grating, i s provided. The device includes a hollow structure, and a free and a threaded member projecting in the hollow structure from both ends. The optical fiber is mounted in tension inside the hollow structure through longitudinal fiber- receiving bores in both members, and has an anchor point affixed to each member with t he grating therebetween. The anchor point of the threaded member is provided outside of the hollow structure, making the device more compact. The free an d threaded members are rotatable together to adjust the resonant wavelength of the grating, and a nut may be provided to allow a fine-tuning. The hollow structure, free member and threaded member have a coefficient of thermal expansion selected so that they together compensate for the temperature dependency of the Bragg wavelength.

Patent Agency Ranking