公开(公告)号：US10747031B2

公开(公告)日：2020-08-18

申请号：US16521107

申请日：2019-07-24

Applicant: TeraXion Inc.

Inventor： André Babin

IPC: G02F1/03 ,  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：US10393955B2

公开(公告)日：2019-08-27

申请号：US15880834

申请日：2018-01-26

Applicant: TERAXION INC.

Inventor： Guillaume Brochu ,  Michel Morin ,  François 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：US20180217322A1

公开(公告)日：2018-08-02

申请号：US15880834

申请日：2018-01-26

Applicant: TERAXION INC.

Inventor： Guillaume Brochu ,  Michel Morin ,  François Trépanier

IPC: G02B6/02

CPC classification number: G02B6/02085 ,  G02B6/02204

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：US09625648B2

公开(公告)日：2017-04-18

申请号：US14876105

申请日：2015-10-06

Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. ,  TERAXION INC.

Inventor： Kelvin Prosyk ,  Ronald Kaiser ,  Karl-Otto Velthaus

IPC: G02B6/26 ,  G02B6/42 ,  G02B6/136 ,  G02B6/122 ,  G02F1/225 ,  G02B6/30 ,  G02B6/12 ,  G02F1/21

CPC classification number: G02B6/136 ,  G02B6/1228 ,  G02B6/305 ,  G02B2006/12035 ,  G02F1/2255 ,  G02F2001/212

Abstract: A monolithic optoelectronic device has a spot-size converter optically connected to a waveguide. The overclad extending over the core of the waveguide is thinner and differently doped than the overclad of the spot-size converter. This structure can be made by applying a process of etching and enhanced selective area regrowth to create regions of the overclad of different thickness or doping. The spot-size converter core is made of a different material than the waveguide core by using etching and enhanced selective area regrowth.

公开(公告)号：US20150338574A1

公开(公告)日：2015-11-26

申请号：US14718273

申请日：2015-05-21

Applicant: TERAXION INC.

Inventor： François PELLETIER

IPC: G02B6/02 ,  B23K26/34 ,  B23K26/00

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：US09008469B2

公开(公告)日：2015-04-14

申请号：US14075854

申请日：2013-11-08

Applicant: Teraxion Inc.

Inventor： Kelvin Prosyk

IPC: G02F1/035 ,  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：US20040037505A1

公开(公告)日：2004-02-26

申请号：US10601065

申请日：2003-06-20

Applicant: Teraxion Inc.

Inventor： Michel Morin

IPC: G02B006/34

CPC classification number: G02B6/29317 ,  G02B6/02085 ,  G02B6/29356 ,  G02B6/29394 ,  H04B10/2519

Abstract: All fiber construction Gires-Tournois interferometers for chromatic dispersion compensation of an optical signal are provided. The interferometers are made of overlapping chirped fiber Bragg gratings having a wide band reflectivity response. In one embodiment, a plurality of FBG interferometers can be cascaded for providing the chromatic dispersion compensation. In another embodiment, an FBG dispersion compensator provided with a pair of multi-cavity FBG interferometers is also provided. The dispersion compensator is provided with two temperature controlling means, each being operationally connected to one of the multi-cavity interferometer for thermo-optically shifting a spectral response thereof, thereby providing a tunable dispersion compensator capable of compensating for all orders of dispersion.

Abstract translation: 提供所有光纤结构用于光信号色散补偿的Gires-Tournois干涉仪。 干涉仪由具有宽带反射率响应的重叠啁啾光纤布拉格光栅制成。 在一个实施例中，可以级联多个FBG干涉仪以提供色散补偿。 在另一个实施例中，还提供了设置有一对多腔FBG干涉仪的FBG色散补偿器。 色散补偿器设置有两个温度控制装置，每个温度控制装置可操作地连接到多空腔干涉仪之一，用于热光移动其光谱响应，从而提供能够补偿所有色散阶数的可调谐色散补偿器。

公开(公告)号：US20040017972A1

公开(公告)日：2004-01-29

申请号：US10390590

申请日：2003-03-17

Applicant: Teraxion Inc.

Inventor： Sylviane Lelievre ,  Richard L. Lachance ,  Yves Painchaud

IPC: G02B006/34 ,  G02B006/26

CPC classification number: G02B6/2932 ,  G02B6/02195 ,  G02B6/29394 ,  G02B6/29395 ,  G06F17/30864 ,  H04B10/2519

Abstract: A tunable dispersion compensator for the compensation of the chromatic dispersion experienced by a single-channel or multi-channel light signal. The compensator includes a plurality of optical structures such as chirped Bragg gratings or combinations thereof, each having a characteristic dispersion profile. An optical coupling arrangement successively propagates the light signal in each of these structures, so that it accumulates the dispersion compensation effect of each. A tuning device jointly tunes the dispersion profile of each optical structure by applying a same tuning force thereto, preferably a temperature gradient.

Abstract translation: 用于补偿单通道或多通道光信号所经受的色散的可调色散补偿器。 补偿器包括多个光学结构，例如啁啾布拉格光栅或其组合，每个具有特征色散轮廓。 光耦合装置依次传播这些结构中的每一个中的光信号，从而累积每个结构的色散补偿效果。 调谐装置通过向其施加相同的调谐力，优选温度梯度来共同调谐每个光学结构的色散轮廓。

公开(公告)号：US20030198434A1

公开(公告)日：2003-10-23

申请号：US10360548

申请日：2003-02-06

Applicant: TERAXION INC.

Inventor： Richard L. Lachance ,  Philippe Pepin ,  Tristan Ruthers ,  Francois Pelletier

IPC: G02B006/34

CPC classification number: G02F1/0115 ,  G02B6/02085 ,  G02B6/02204 ,  G02B6/02209 ,  G02F1/0147 ,  G02F2201/307

Abstract: The present invention discloses practical and power efficient assemblies for applying a temperature gradient to a fiber Bragg grating. An application of such assemblies is, for example, the active tuning of the chromatic dispersion of the grating. The temperature gradient is produced in a heat conductive element, with which the FBG is in continuous thermal contact, by elements controlling the temperature of the ends of the heat conductive element, thereby applying the temperature gradient to the FBG. A first preferred embodiment includes a heat recirculation member allowing the recirculation of heat between the two ends of the heat conductive elongated element, thereby providing a rapid and dynamical tuning of the temperature gradient with a minimal heat loss. A second embodiment provides isolation from the surrounding environment in order to decouple the desired temperature gradient from ambient temperature fluctuations, thereby improving the control of the optical response of a fiber grating.

Abstract translation: 本发明公开了一种用于向光纤布拉格光栅施加温度梯度的实用和功率有效的组件。 这种组件的应用是例如光栅的色散的主动调谐。 通过控制导热元件端部温度的元件，通过FBG与FBG连续热接触的导热元件产生温度梯度，从而将温度梯度应用于FBG。 第一优选实施例包括热再循环构件，其允许在导热细长元件的两端之间再循环热，从而以最小的热损失提供温度梯度的快速和动态调谐。 第二实施例提供与周围环境的隔离，以便将期望的温度梯度与环境温度波动分离，由此改善光纤光栅的光响应的控制。

公开(公告)号：US20030021532A1

公开(公告)日：2003-01-30

申请号：US10101229

申请日：2002-03-18

Applicant: Teraxion Inc.

Inventor： Yves Painchaud

IPC: G02B006/34 ,  G02B006/26

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

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 particluar channels, thereby taking into account the wavelength-dependent dispersion slope of the light signal.

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依赖色散斜率。