公开(公告)号：CA2371106A1

公开(公告)日：2003-08-07

申请号：CA2371106

申请日：2002-02-07

Applicant: TERAXION INC

Inventor： LACHANCE RICHARD L ,  RUTHERS TRISTAN ,  PEPIN PHILIPPE

IPC: G02B6/02 ,  G02F1/01 ,  G02B6/34

公开(公告)号：CA2359190A1

公开(公告)日：2003-04-12

申请号：CA2359190

申请日：2001-10-12

Applicant: TERAXION INC

Inventor： TREPANIER FRANCOIS

IPC: G02B5/18 ,  G11B7/0065

Abstract: A system and a method for recording interference fringes in a photosensiti ve medium. Two light beams are guided along different light paths to impinge on a photosensitive medium, where they interfere to produce the interference fringes. One of the beam is reflected along its path on a delay mirror forming a fixe d angle .PHI. with respect to the plane of the photosensitive medium. Both the photosensitive medium and delay mirror are translated with respect to the light paths of th e two beams, thereby recording the interference fringes all along the medium. The angle .PHI. is chosen so that the interference pattern is fixed relative to the photosensitive medium along its length.

公开(公告)号：AU2002313415A1

公开(公告)日：2003-02-17

申请号：AU2002313415

申请日：2002-07-25

Applicant: TERAXION INC

Inventor： PAINCHAUD YVES ,  LELIEVRE SYLVIANE ,  LACHANCE RICHARD

IPC: G02B6/02 ,  G02B6/34 ,  H04B10/2519 ,  G02B6/293

公开(公告)号：CA3173623A1

公开(公告)日：2022-09-15

申请号：CA3173623

申请日：2022-03-08

Applicant: TERAXION INC

Inventor： TREPANIER FRANCOIS ,  BOUDREAU SYLVAIN ,  MAILLOUX ALAIN ,  BROCHU GUILLAUME

IPC: G02B5/18 ,  G02B27/10 ,  H01S3/13

Abstract: A method of manufacturing a Volume Bragg Grating (VBG) is provided, comprising providing a cylindrical bulk medium made of a transparent glass material and having a central axis along a longitudinal direction, and inscribing an interference pattern in the cylindrical bulk medium. The interference pattern has a plurality of grating fringe elements distributed along a line parallel to the central axis. The method further includes rotating the cylindrical bulk medium about the central axis during said inscribing, thereby azimuthally extending the grating fringes elements. There is further provided a VBG manufactured according to such a method, the use of such a VBG in a CPA system of cladding-pumped fiber laser.

公开(公告)号：CA2971601C

公开(公告)日：2022-06-21

申请号：CA2971601

申请日：2017-06-23

Applicant: TERAXION INC

Inventor： BROCHU GUILLAUME ,  MORIN MICHEL ,  TREPANIER FRANCOIS

IPC: G02B5/20 ,  G02B5/18 ,  G02B6/34

Abstract: Optical fiber filters and uses thereof are presented. In typical implementations, there is provided a FBG taking deleterious light out of a fiber core without reflecting it into the fiber core. It also allows the unhindered transmission of useful light at a wavelength outside of the spectral band covered by the deleterious light. The filter couples the incoming deleterious light to cladding modes propagating in the opposite direction without coupling the incoming deleterious light to core or cladding modes propagating in the opposite direction. The filter may for example be useful as a Raman or ASE filter in a laser cavity of other optical devices.

公开(公告)号：CA2465168A1

公开(公告)日：2004-10-25

申请号：CA2465168

申请日：2004-04-23

Applicant: TERAXION INC

Inventor： PAINCHAUD YVES

IPC: G02B6/02 ,  G02B5/18 ,  G01M11/02

Abstract: Methods to improve the optical properties of Bragg gratings are disclosed. A first method includes a post correction of the refractive index profile by applyin g an average index correction thereto. The average index correction is obtained through an analysis of the defects of the refractive index profile characterised Through a reconstruction thereof. A second method includes a pre-correction to the refractive index profile by characterising the defects of a test grating, an d again calculating an average index correction based thereon. Further gratings are then made using a corrected refractive index profile.

公开(公告)号：AU2003212148A1

公开(公告)日：2004-02-16

申请号：AU2003212148

申请日：2003-03-17

Applicant: TERAXION INC

Inventor： LELIEVRE SYLVIANE ,  LACHANCE RICHARD L ,  PAINCHAUD YVES

IPC: H04B10/2519 ,  G06F17/30 ,  H04B10/18

公开(公告)号：CA2395905A1

公开(公告)日：2004-01-26

申请号：CA2395905

申请日：2002-07-26

Applicant: TERAXION INC

Inventor： LELIEVRE SYLVIANE ,  LACHANCE RICHARD ,  PAINCHAUD YVES

IPC: H04B10/2519 ,  G06F17/30 ,  H04B10/18

Abstract: An optical device for the dynamic compensation of chromatic dispersion allowing a wide range of dispersion correction levels is disclosed. It is based on the combination of a series of optical structures each including a waveguide and a Bragg grating provided therein. The Bragg gratings have an intrinsic chirp allowing the relative delay of wavelength components in order to compensate the chromatic dispersion components. The various arrangement of the grating orientations results in different ranges of dispersion compensation levels, depending on the relative accordance of the chirp period of each grating component. Dynamic chromatic dispersion compensation is obtained by tuning the optical structur e by means of a grating control unit coupled to the fiber grating.

公开(公告)号：CA2428288A1

公开(公告)日：2003-11-07

申请号：CA2428288

申请日：2003-05-06

Applicant: TERAXION INC

Inventor： POULIN MICHEL ,  TREPANIER FRANCOIS

IPC: G03F1/26 ,  G02B5/18 ,  G02B5/32 ,  G02B27/60 ,  G03F1/00 ,  G03F7/00

Abstract: A method for manufacturing complex gratings masks having phase shifted regions and a holographic set-up for making the same are disclosed. The method, which can be easily automated, allows to produce arbitrary phase shift in holographically recorded gratings with high precision. In a preferred embodiment, the phase is controlled by a fringe locking system with a movable locking detector and a phase measuring device such as a camera for example, thereby allowing to provide a real-time phase locking and a real-time calibration of the set-up.

公开(公告)号：CA2383807A1

公开(公告)日：2003-10-26

申请号：CA2383807

申请日：2002-04-26

Applicant: TERAXION INC

Inventor： PELLETIER FRANCOIS ,  LACHANCE RICHARD L ,  PEPIN PHILIPPE ,  RUTHERS TRISTAN

IPC: G02F1/01 ,  G02B5/26