Polyimide-coated F-doped single-mode optical fibers

Polyimide-coated single mode F-doped fibers are high temperature (-196 to +300C)optical fibers that can be used for both high-temperature and cryogenic applications. This fiber type is used in sensor systems for biomedicine, oil and gas industry, aircraft applications, etc.

Polyimide-coated single-mode optical fiber	ОК-6/125F-PI	ОК-9/125F-PI
Core diameter, µm	6.8 ± 0.5	9.1 ± 0.5
Mode field diameter (Gauss), µm	7.5 ± 0.5	10 ± 0.5
Clad diameter, µm	125 ± 1	125 ± 1
Coating diameter, µm	155 ± 5	155 ± 5
Fiber type	Single mode	Single mode
Coating material	Polyimide	Polyimide
Cladding offset, %	< 2	< 2
Coating offset, %	< 5	< 5
Attenuation at 1550 nm¹, dB/km	< 1.3	< 1.3
Wavelength range, nm	1500 - 1600	1500 - 1600
Core material	silica	silica
Depressive clad	F-doped	F-doped
Clad material	silica	silica
Cutoff wavelength, µm	< 1.45	< 1.45
Numerical Aperture (NA)	0.16 ± 0.01	0.16 ± 0.01
∆ n	0.009 ± 0.0005	0.009 ± 0.0005
Short-term bending radius, mm	≥ 10	≥ 10
Long-term bending radius, mm	≥ 25	≥ 25
Proof test, kpsi	100	100
Min operating temperature^2, C	-196	-196
Max operating temperature (short time < 60s), C	300	300
Max operating temperature (long time > 60s), C	< 250	< 250
Permissible rate of temperature change in the temperature range, C/min	5	5

1- under normal climatic conditions
2- at the minimum operating temperature, the integrity of the optical fiber is guaranteed

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Polyimide-coated F-doped single-mode optical fibers

Polyimide-coated single-mode optical fiber

ОК-6/125F-PI

ОК-9/125F-PI