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Home / Fiber Family / Fiber Bragg Gratings / FBG Strain Sensor

FBG Strain Sensor

The strain sensor makes use of the sensitivity of fiber grating to measure the strain. Simultaneously, as temperature compensation, another FBG is used to monitor the temperature. The FBG is fixed inside a robust housing, which can be mounted on a structure by using two anchoring points Or embedded in the material.

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Features

● Robust and high reliability

● Temperature cross-sensitive: when large temperature variations are expected, a temperature sensor is recommended for compensation purposes.

● Monitoring of compression as well as tension possible

● Watertight and capable of service in harsh environment. 

Specifications

Parameter

Unit

Value

Remark

Center Wavelength

nm

1460-1610


Strain Measurement Range

με

+/-1500

Customized

Accuracy1


1‰


Distance Between Anchoring Points

mm

80

Customized

Temperature Resolution

℃

0.04


Temperature Accuracy

℃

0.4


Temperature Range

℃

-5-80


Housing Diameter

mm

10


Connector

--

FC/APC


Pigtail Type


Amoured Or Jumper   Cable


1. The sensor accuracy does not contain error sources originating from the read-out equipment.


Sensor Stain test data:

Strain（Ustrain)

CW(nm)

0

1579.245

487.804878

1579.879

975.6097561

1580.479

1463.414634

1581.085

1951.219512

1581.78

2439.02439

1582.409

2926.829268

1583.037

3414.634146

1583.694


23507b85-562e-4643-92c7-58c51ab77214.jpg

Sensor Temperature test data：

Temp.

CW（nm）

0

1580.138

20

1580.677

40

1581.223

60

1581.789


dcacadbe-3a69-4c0c-8e16-d6cfe36877e2.jpg

Application

● The strain sensor can be applied to monitor any strain changes in various structures.

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