Model FO197


The FO197 is a single-channel, multimode fiber optic rotary joint (FORJ). It is passive and bidirectional, and allows the transfer of any type of optical signal across rotational interfaces.

The FO197 fiber optic rotary joint can be combined with our electrical and / or fluid slip rings, providing a single, compact package for optical signals, electrical power and fluid transfer.

The FORJ can be assembled with pigtail lengths tailored to the customer’s application or installed with connector bushings (ST or FC). Housing, mounting flange and drive features can also be customized to meet the customer’s requirements.

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  • Provides rotary coupling for a multimode fiber link
  • Passive bidirectional device
  • Alternative drive coupling and mounting arrangements are available (consult factory for specification details)
  • Connectorized interfaces, for easy fiber cable replacement
  • Stainless steel, aluminum or anodized aluminum housing
  • Ruggedized design
    • MIL-STD-167-1 ship vibration
    • MIL-STD-810D functional shock (40 g)


  • Can be integrated into existing slip ring designs
  • Passive bidirectional optical transmission
  • Can be combined with our electrical slips and fluid unions
  • Long life

Typical Applications

  • ROVS
  • Remote I/O in industrial machinery
  • Video surveillance systems
  • Material handling systems
  • Sensor platforms
  • Indexing tables
  • Cable reels
  • Robotics
  • Turrets


Fiber Size (Microns) 50 / 125, 62.5 / 125. Consult factory for other sizes
Insertion Loss Typical < 1.5 dB, Maximum < 3.0 dB
Rotation Variation Typical < 0.5 dB, Maximum < 1.0 dB
Back Reflection Typical 22 dB, 18 dB Minimum
Wavelengths Suitable for operation in 850 nm and 1300 nm multimode bands or 1300 nm and 1550 nm multimode bands. Consult factory for other wavelengths such as 900-1100 nm band (tested at 1060 nm)
Rotational Speeds To 1000 rpm. Higher rotational speeds should be discussed with the factory.
Temperature -40° to +60° C (dry version). Consult factory for extended range.
Exterior Surfaces Stainless steel, aluminum or anodized aluminum
Vibration Per MIL-STD-167-1A
Shock 40 g / 11 ms sawtooth per MIL-STD-810 Method 516
Terminations ST or FC connector receptacles or pigtailed with cable and connectors to meet customer’s requirements. Consult factory for other connectors
Pressure Up to 10,000 psi (69,000 kPa) for fluid filled version*
Pigtail Length Up to 3 meters standard. Consult factory for longer lengths
Options Hybrid units combined with electrical and fluid slip rings, available with or without mounting flange. Consult factory for details

*Fluid filled version is slightly larger than shown below. Consult factory for details


Technical Support

Telephone:  +1-902-468-2263