Single Mode Graded Index Expanded Beam Connectors

/ Connectors & Terminations

IDIL Fibres Optiques has developed a new high power connector technology based on graded index expanded beam.

While industry is asking for more power handling optics, IDIL answers perfectly by providing connectors which enlarge beam waist and reduce power density at the plug connection. By welding single mode fiber and the right length of graded index fiber, these connectors allow high power handling capacity and low insertion losses.

Moreover, their small size and the high contamination tolerance make them very useful in a large spectrum of applications. These connectors are available in FC, SC, ST, LC, E-2000, SMA and also PM.

  • High power handling capacity (up to 10 W)
  • Low insertion loss
  • Low return loss
  • Small size
  • Reliable optical performance in harsh environment
  • Multi-point connectors
  • Harsh environment
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  • Telecommunications
  • Fiber optic instrumentation
  • Medical & Biotech
  • Switches
  • Laser diode coupling
  • Optical waveguide coupling
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Insertion loss0.3 dB typical
0.5 dB max
Return loss-50 dB (0° polished)
-60 dB max
Wavelength range400 nm - 2 µm
Wavelength bandwidth200 nm typical
Optical power handling3 W typical
10 W max
Beam diameter50 - 300 µm
ConnectorsFC, LC, SC, SMA, ST, E2000, PM, other
Operating temperatureFrom - 40°C to + 85°C
Ferrule typePC

These high power connectors use graded index fiber on one mating end (connector 1) to collimate and expand the light beam on the connector 2 which refocus the light back into the fiber core.

Beam waist is typically about 60 µm at the extremity of the graded index fiber. However, depending on your application, it can be easily increased by using bigger fibers and ferrules.

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