公开(公告)号：US20200050027A1

公开(公告)日：2020-02-13

申请号：US16521107

申请日：2019-07-24

Applicant: TeraXion Inc.

Inventor： André Babin

IPC: G02F1/035 ,  G02F1/01

Abstract: An optical phase modulation device for modulating a phase of an input light signal at a modulation frequency is provided, which can be used in integrated photonics applications. The device can include an optical phase modulator, for example a thermo-optic phase shifter having an effective refractive index that depends linearly temperature, configured to impart a phase shift to the input light signal, the phase shift varying quadratically in response to an applied modulating electric drive signal. The device can also include a phase modulator driver configured to apply the electric drive signal to the optical phase modulator, the electric drive signal having a time-varying component oscillating at half the modulation frequency and no time-constant component, thereby imparting the phase shift, modulated at the modulation frequency, to the phase of the input light signal to produce a phase-modulated light signal. Optical phase modulation systems and methods are also disclosed.

公开(公告)号：US20190339446A1

公开(公告)日：2019-11-07

申请号：US16515132

申请日：2019-07-18

Applicant: TERAXION INC.

Inventor： Guillaume BROCHU ,  Michel MORIN ,  Françios TRÉPANIER

IPC: G02B6/02

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 useful 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：US09477036B2

公开(公告)日：2016-10-25

申请号：US14718273

申请日：2015-05-21

Applicant: TERAXION INC.

Inventor： François Pelletier

IPC: G02B6/34 ,  G02B6/02 ,  B23K26/34 ,  B23K26/32

CPC classification number: G02B6/02195 ,  B23K26/21 ,  B23K26/262 ,  B23K26/282 ,  B23K26/32 ,  B23K26/34 ,  B23K2101/04 ,  B23K2103/166 ,  G02B6/0218 ,  G02B6/022 ,  G02B6/02209

Abstract: A post-assembly wavelength-tuning method for an optical filter provided along an optical fiber mounted under tension in a packaging assembly is provided. The packaging assembly includes at least one packaging component mechanically coupled to the optical fiber and optically accessible from outside of the packaging assembly. The method includes a step of measuring a post-assembly spectral response of the optical filter and determining therefrom a spectral deviation with respect to a target spectral response. The method also includes a step of forming one or more laser-welded zones on the packaging component so as to cause a permanent deformation thereof. The permanent deformation induces a modification in length of the optical fiber, thereby changing the post-assembly spectral response of the optical filter to compensate for the measured spectral deviation.

Abstract translation: 提供了一种用于沿着安装在包装组件中的张力下的光纤设置的滤光器的后装配波长调谐方法。 包装组件包括至少一个机械耦合到光纤并且可从包装组件的外部光学地接近的包装部件。 该方法包括测量光学滤波器的装配后光谱响应并由此确定相对于目标光谱响应的光谱偏差的步骤。 该方法还包括在包装部件上形成一个或多个激光焊接区域以使其永久变形的步骤。 永久变形引起光纤长度的改变，从而改变光学滤波器的组装后光谱响应，以补偿测量的光谱偏差。

公开(公告)号：US09244327B2

公开(公告)日：2016-01-26

申请号：US14263491

申请日：2014-04-28

Applicant: TERAXION INC.

Inventor： Kelvin Prosyk

IPC: G02F1/035 ,  G02F1/225 ,  G02F1/01 ,  G02F1/21

CPC classification number: G02F1/225 ,  G02F1/0123 ,  G02F2001/212 ,  G02F2201/126 ,  G02F2201/127

Abstract: Mach-Zehnder optical modulators and IQ modulators based on a series push-pull travelling wave electrode are provided. The modulator includes a conductive backplane providing an electrical signal path. One or more voltage control taps are electrically connected to the conductive backplane within an area underneath the travelling wave electrode and provide an equalizing DC control voltage to the conductive backplane. In other variants, a plurality of conductive backplane segments are provided, and at least one voltage control tap is electrically connected to each conductive backplane segment within an area underneath the travelling wave electrode and provides a DC control voltage to the corresponding conductive backplane segment.

Abstract translation: 提供了基于串联推挽行波电极的马赫 - 曾德尔光学调制器和IQ调制器。 调制器包括提供电信号路径的导电背板。 一个或多个电压控制抽头在行波电极下面的区域内电连接到导电背板，并向导电背板提供均衡的直流控制电压。 在其他变型中，提供多个导电背板段，并且至少一个电压控制抽头电连接到在行波电极下面的区域内的每个导电背板段，并向对应的导电底板段提供DC控制电压。

公开(公告)号：US20140153860A1

公开(公告)日：2014-06-05

申请号：US14075854

申请日：2013-11-08

Applicant: TERAXION INC.

Inventor： Kelvin Prosyk

IPC: G02F1/225

CPC classification number: G02F1/225 ,  G02F1/2257 ,  G02F2201/127

Abstract: A Mach-Zehnder optical modulator with a travelling wave electrode has a signal transmission line conductor (S) carrying an input electrical signal, and two ground transmission line conductors (G1 and G2) providing a return path for the electrical signal. The signal transmission line conductor is positioned between the first and second ground lines, and the first and second optical waveguide branches are positioned between the signal transmission line conductor and the first ground line. The modulator therefore has a GSG structure providing an asymmetrically-loaded configuration.

Abstract translation: 具有行波电极的马赫 - 策德尔光调制器具有承载输入电信号的信号传输线导体（S）和提供电信号返回路径的两个接地传输线导体（G1和G2）。 信号传输线导体位于第一和第二接地线之间，第一和第二光波导分支位于信号传输线导体和第一接地线之间。 因此，调制器具有提供非对称加载配置的GSG结构。

公开(公告)号：US20040161195A1

公开(公告)日：2004-08-19

申请号：US10695658

申请日：2003-10-28

Applicant: Teraxion Inc.

Inventor： Pierre Bernard ,  Nathalie Gregoire ,  Ghislain Lafrance

IPC: G02B006/34

CPC classification number: G02B6/02185 ,  G02B5/1857

Abstract: A method for manufacturing a FBG having improved performances and an annealing-trimming apparatus for making the same are provided. The trimming and the annealing steps are advantageously combined into a single process in order to efficiently fabricate complex FBG filters with improved performance. The method comprises the steps of UV-writing a FBG in an optical fiber prior to annealing-trimming characteristics of the FBG by performing the sub-steps of monitoring characteristic data of the FBG while generating a controlled complex temperature profile along the FBG with a heating means according to the characteristic data for providing an accurate controlled annealing process of the FBG, thereby providing an accurate trimming thereof.

Abstract translation: 提供一种制造具有改进性能的FBG的方法和用于制造其的退火修剪装置。 修整和退火步骤有利地组合成单个工艺，以便有效地制造具有改进性能的复杂FBG过滤器。 该方法包括以下步骤：在FBG的退火修整特性之前，通过执行监视FBG的特性数据的子步骤，同时沿着FBG生成受控的复合温度曲线，在光纤中UV-write FBG 根据用于提供FBG的精确控制退火处理的特性数据的装置，从而提供其精确的修整。

公开(公告)号：US20030072003A1

公开(公告)日：2003-04-17

申请号：US09975836

申请日：2001-10-11

Applicant: TERAXION INC.

Inventor： Francois Trepanier

IPC: G01B009/02

CPC classification number: G02B5/1857

Abstract: A system and a method for recording interference fringes in a photosensitive 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 fixed angle null 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 the two beams, thereby recording the interference fringes all along the medium. The angle null is chosen so that the interference pattern is fixed relative to the photosensitive medium along its length.

Abstract translation: 用于在光敏介质中记录干涉条纹的系统和方法。 两个光束沿着不同的光路被引导以照射到感光介质上，在这些光敏介质上它们干涉以产生干涉条纹。 光束中的一个沿着其路径反射在延迟反射镜上，相对于感光介质的平面形成固定角度φi。 感光介质和延迟镜都相对于两个光束的光路平移，从而沿着介质记录干涉条纹。 角度phi被选择为使得干涉图案相对于沿其长度的光敏介质是固定的。

公开(公告)号：US20030035629A1

公开(公告)日：2003-02-20

申请号：US10232106

申请日：2002-08-28

Applicant: TERAXION INC.

Inventor： Yves Painchaud ,  Richard Lachance ,  Sylviane Lelievre

IPC: G02B006/34

CPC classification number: G02B6/29395 ,  G02B6/02085 ,  G02B6/29317 ,  G02B6/2932 ,  G02B6/29394 ,  H04B10/2519

Abstract: A tunable 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 are also provided in order to adjust the dispersion of the grating components to the required values.

Abstract translation: 提供了一种可调光学结构及其基于用于补偿多通道光信号中色散的装置。 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。 还提供调谐装置以便将光栅部件的色散调整到所需的值。

公开(公告)号：US20240313496A1

公开(公告)日：2024-09-19

申请号：US18606861

申请日：2024-03-15

Applicant: TERAXION INC. ,  UNIVERSITE LAVAL

Inventor： Vincent BOULANGER ,  Pascal DELADURANTAYE

IPC: H01S3/00 ,  H01S3/067

CPC classification number: H01S3/0057 ,  H01S3/06712 ,  H01S3/0675

Abstract: A light pulse generator for generating ultrashort light pulses is provided. The light pulse generator is based on a linear cavity free of polarizing components and configured to generate ultrashort light pulses based on spectral broadening of light. Segments of polarization maintaining fibers define an optical fiber path bound by first and second FBGs. A cross-polarization configuration in the cavity allows to couple a slow polarization axis of the optical fiber segment hosting the first FBG optical fiber segment with a fast polarization axis of the optical fiber segment hosting the second FBG. The cross-polarization configuration takes advantage of the birefringence of FBGs in polarization maintaining optical fibers to ensure a systematic start-up in only one predetermined polarization axis, without the necessity to add a polarizer or other polarizing component in the cavity.

公开(公告)号：US20190173254A1

公开(公告)日：2019-06-06

申请号：US16209399

申请日：2018-12-04

Applicant: TERAXION INC.

Inventor： François TRÉPANIER ,  Pascal Deladurantaye ,  Axel Saumier-Verret ,  Sylvain Boudreau ,  René Dionne ,  Mathieu Demers ,  Jean-Thomas Landry

IPC: H01S3/00 ,  H01S3/067 ,  H01S3/04

Abstract: A bulk compressor for use in a chirped pulse amplification system (CPA) comprising a tunable pulse stretcher and an amplifier is provided. The bulk compressor includes a mounting block formed as a monolithic structure and made of solid material. The mounting block may define a plurality of mounting surfaces each forming a collar surrounding a light passage. Optical components are mounted on the mounting block in a fixed mutual spatial relationship, each optical component having a front face having a peripheral portion mounted in direct contact with the collar formed by a respective one of the mounting surfaces. The bulk compressor may be provided as a stand-alone component, a part of a stretcher-compressor pair or a full CPA system, and may be used in a method for amplifying input optical pulses.