公开(公告)号：US20040161197A1

公开(公告)日：2004-08-19

申请号：US10773005

申请日：2004-02-04

Applicant: Teraxion Inc.

Inventor： Francois Pelletier ,  Andre Vo Van

IPC: G02B006/34

CPC classification number: G02B6/022 ,  G02B6/02085 ,  G02B6/0218 ,  H04B10/2519

Abstract: An adjustable chromatic dispersion compensator is provided, with the possibility of passive athermalisation. The device includes an optical fiber grating which is fixed on its length to an elongated beam member that has a flexible cantilever portion 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 adjustable chromatic dispersion compensation. Adjustment of the central filter wavelength without affecting the grating integrity is further provided. A multi-material construction allows the package to passively compensate for the natural temperature dependence of the filter resonance wavelength by varying the strain in the fiber in response to changes in the ambient temperature.

Abstract translation: 提供了一种可调色散补偿器，具有被动绝热的可能性。 该装置包括光纤光栅，该光纤光栅在其长度上固定到具有柔性悬臂部分的细长梁部件，使得在光栅中感应的非均匀拉伸应变重新配置组延迟响应。 光栅的啁啾由条的弯曲而改变，允许可调色散补偿。 进一步提供中央滤波器波长的调整而不影响光栅的完整性。 多材料结构允许封装通过响应于环境温度的变化改变光纤中的应变而被动地补偿滤波器谐振波长的自然温度依赖性。

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。