公开(公告)号：US06879755B2

公开(公告)日：2005-04-12

申请号：US10351583

申请日：2003-01-24

Applicant: Michel Morin ,  Yves Painchaud ,  Sylviane Lelievre ,  Richard Lachance

Inventor： Michel Morin ,  Yves Painchaud ,  Sylviane Lelievre ,  Richard Lachance

IPC: G02B6/02 ,  G02B6/34 ,  H04B10/18

CPC classification number: G02B6/02085 ,  G02B6/02204 ,  G02B6/29319 ,  G02B6/2932 ,  G02B6/29394 ,  G02B6/29395 ,  H04B10/2519

Abstract: A dispersion compensator for the compensation of chromatic dispersion in a multi-channel light signal is provided. The compensator includes a pair of optical structures each having 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. An optical assembly propagates the light signal sequentially through both optical structures. The periods of the grating components are selected to allow compensation of chromatic dispersion experienced by this particular channel or these particular channels, thereby taking into account the dispersion slope of the light signal. Tuning means are also provided in order to adjust the dispersion of the grating components of each optical structures, and proper selection of the tuning parameters allows tuning independently both the dispersion and dispersion slope.

Abstract translation: 提供了用于补偿多通道光信号中色散的色散补偿器。 补偿器包括一对光学结构，每个光学结构具有波导和设置在其中的布拉格光栅。 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。 光学组件顺序地通过两个光学结构传播光信号。 选择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色散斜率。 还提供调谐装置以便调整每个光学结构的光栅分量的色散，并且适当选择调谐参数允许独立地调节色散和色散斜率。

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。

公开(公告)号：US12189176B2

公开(公告)日：2025-01-07

申请号：US17502997

申请日：2021-10-15

Applicant: TERAXION INC.

Inventor： Samuel Gouin ,  Claude Carignan ,  Mathieu Faucher ,  François Trepanier ,  Guy Rousseau ,  Martin Bernier ,  Alain Villeneuve

IPC: G02B6/02 ,  C03C25/622

Abstract: A method and a system for providing a low absorption Bragg grating along a grating region of an optical fiber are presented. The Bragg grating is written along the grating region by multiphoton absorption of ultrafast light pulses impinged on this grating region through a polymer coating of the optical fiber. The Bragg grating is then photobleached by propagating a photobleaching light beam along the optical fiber. The photobleaching light beam has optical parameters selected to reduce defects in the grating region induced by the writing of the Bragg grating in a substantially non-thermal regime.

公开(公告)号：US11681094B2

公开(公告)日：2023-06-20

申请号：US17541867

申请日：2021-12-03

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：US20220123526A1

公开(公告)日：2022-04-21

申请号：US17384135

申请日：2021-07-23

Applicant: TeraXion Inc.

Inventor： Sylvain BOUDREAU ,  Keven BÉDARD ,  Michel MORIN ,  François COSTIN ,  André BABIN ,  Simon AYOTTE

IPC: H01S5/32 ,  H01S5/125 ,  H01S5/065

Abstract: A semiconductor laser comprising a single mode laser cavity having a stack of semiconducting layers defining a transversal p-n junction is provided. A plurality of electrodes are coupled to corresponding sections of the laser cavity along the longitudinal light propagation direction, each corresponding section defining one of an amplification section or a modulation section. One or more DC sources are coupled to the electrodes associated with the amplification sections to forward-bias the p-n junction above transparency, so as to provide gain in the associated amplification sections. One or more modulation signal sources are coupled to the electrodes associated with the modulation sections, and apply a modulation signal across the p-n junction below transparency, the modulation signal providing a modulation of an output optical frequency of the semiconductor laser. Each modulation section is operated in photovoltaic mode.

公开(公告)号：US20220091327A1

公开(公告)日：2022-03-24

申请号：US17541867

申请日：2021-12-03

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：US10663654B2

公开(公告)日：2020-05-26

申请号：US16515132

申请日：2019-07-18

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.