Design

Ormocer®‐coated glass fiber with 13 Bragg gratings

Core diameter of glass fiber, approx.

μm

6

Diameter of fiber cladding, approx.

μm

125

Outer diameter with coating, approx.

μm

195

Bragg grating length

mm

6 ±1

Connection (plug)

FC/APC

Available Bragg wavelengths

nm

1520 ¼ 1580

Bragg wavelength tolerance

nm

±0.4

Bragg signal width (FWHM)

nm

0.13 ±0.02

Gage factor

0.78

Gage factor tolerance

%

±2

Degree of reflection

%

<20

Attenuation at 1550 nm (single light path)

dB/km

8.6

Reference temperature

°C

23

Operating temperature range

°C [K]

-268.9 ¼ +200 [4.2 ¼ 473]

Storage temperature range

°C [K]

-268.9 ¼ +200 [4.2 ¼ 473]

Thermal cross sensitivity (TCS)

thermal contribution of sensor to strain sensor

μm/m/°C

8.0

Tolerance of thermal cross sensitivity (TCS)

μm/m/°C

±1

Tensile load at break

N

> 50

μm/m

50,000 (5%)

Smallest bend radius at reference temperature

mm

2.5

Applicable bonding materials

EP310S, X60, X120