J-Fiber Jena

Radiation hard Multimode Fibers

j-fiber’s porfolio of radiation hard Multimode fibers supports bandwidth intense applications of up to 10 Gb/s transmission rates with demand for fibers that withstand irradation while offering best connectivity features.

Radiation hard Multimode fibers overview

Geometrical Characteristics OptiGrade R.H.
150
OptiGrade R.H.
300
Graded Index
MMF 50/125
R.H.
Graded Index
MMF 62.5/125
R.H.
Unit
Core diameter 50 +/- 2 50 +/- 2 50 +/- 2 62.5 +/- 2.5 µm
Cladding diameter 125 +/- 1 125 +/- 1 125 +/- 1 125 +/- 1 µm
Coating diameter 242 +/- 7
or 500 +/-15
242 +/- 7
or 500 +/-15
242 +/- 7
or 500 +/-15
242 +/- 7
or 500 +/-15
µm

 
Optical Characteristics OptiGrade R.H.
150
OptiGrade R.H.
300
Graded Index
MMF 50/125
R.H.
Graded Index
MMF 62.5/125
R.H.
Unit
Bandwidth (OFL) at 850 nm
at 1300 nm
≥750
≥ 500
≥ 1500
≥ 500
400
400
300
600
MHz.km
Bandwidth (EMB) at 850 nm > 1000 > 2000 MHz.km
Link lengths at 850 nm
at 1300 nm
150m/10Gb/s
150m/10Gb/s
300m/10Gb/s
300m/10Gb/s
Numerical Aperture 0.200 +/- 0.015 0.200 +/- 0.015 0.200
+/- 0.015
0.275 +/- 0.015

 
Continuous Irradiation OptiGrade R.H.
150
OptiGrade R.H.
300
Graded Index
MMF 50/125
R.H.
Graded Index
MMF 62.5/125
R.H.
Unit
Irradiation dose 22rad/s
0.22Gy/s
22rad/s
0.22Gy/s
23rad/s 23rad/s
Max.dose 1-105rad/
1.103Gy
1-105rad/
1.103Gy
1-105rad/
1.104Gy
1-105rad/
1.104Gy
Induced attenuation at 835 nm
at 1307 nm
20.8
1.2
20.8
1.2
<1450
<40
<1450
<40
dB/100m

 
Pulsed Irradiation OptiGrade R.H.
150
OptiGrade R.H.
300
Graded Index
MMF 50/125
R.H.
Graded Index
MMF 62.5/125
R.H.
Unit
Irradiation dose 2700rad/27Gy 2700rad/27Gy 2700rad/27Gy 2700rad/27Gy
Pulse duration 50 50 50 50 ns
Induced attenuation at 835 nm
at 1307 nm
0.96 dB/100m
0.12 dB/100m
0.96 dB/100m
0.12 dB/100m
<0.5 dB/km
(at 1310nm)
<0.5 dB/km
(at 1310nm)

 

OptiGrade R.H. has been designed to provide high bandwidth10 Gb/s transmission and withstand hazards from radiation threatened environments. The fibre features a graded index configuration with 50/125 core/clad design and has been optimized for use in 850nm wavelenths operation.

Features. Benefits.

Low attenuation change under radiation exposure

  • Highest bandwidth with guaranteed transmission at 10Gb/s data rates up to 300m distance
  • Allows the use of low cost 850nm VSCELs
  • Provides high performance at overfilled launch (OFL) bandwidth of up to 1500 MHz∙km @ 850 nm and 500 MHz∙km @ 1300 nm
  • 50µm core allows for high coupling efficiency
  • Excellent compatibility in all cable constructions, such as tight buffer and loose tube

Applications.

Bandwidth intense applications which exposes the fiber to radiation, such as:

  • Retrieval applications such as video coverage of news events
  • space-borne structure monitoring
  • Medical imaging programs
  • Passive media in communication centers of civil nuclear power stations
  • For use in tactical cables in military communication systems

Graded Index Multimode fiber R.H. is the radiation hard Multimode fiber which is available in core sizes of 50µm, 62.5µm, and 100µm and an optional 500µm coating for use in harsh environments such as in military applications.

Features. Benefits.

Lowest attenuation changes under radiation exposure
High bandwidth, suitable for high data rates
Easy handling and splicing
Available in standard Multimode fiber designs
Optional 500µm coating for harsh environments

Applications.

Defence
Aerospace
Sensors
Industrial

 

Contact

j-fiber GmbH
Im Semmicht 1
D-07751 Jena, Germany

Tel: +49-3641-352 100
Fax: +49-3641-352 101
info@j-fiber.com