Fiber Optic Rotary Joints

FO257

Multi-Channel FORJ

The FO257 is a compact, two pass, fiber optic rotary joint (FORJ) for plastic optical fiber.

Ideally suited to SERCOS applications, the FO257 can be combined with our electrical and fluid slip rings, giving 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. Housing, mounting flange and drive features can also be customized to meet application requirements.

Features

  • Provides rotary coupling for two multimode plastic large core fibers
  • Passive and bidirectional
  • Can be combined with various electrical slip rings and fluid unions
  • Customized mounting flanges available
  • Can be integrated into existing slip ring designs
  • Aluminum housing
  • Can be supplied with large core glass pigtails to reduce overall system loss
  • Rugged design
    • MIL-STD-167-1 ship vibration
    • MIL-STD-810E functional shock (40 g)

FO257 Specifications

  • Fiber Size (Microns):

    1000 plastic. Consult factory for other fiber types.

  • Insertion Loss: Channel 1*

    Typical < 4.0 dB | Maximum < 10.0 dB

  • Insertion Loss: Channel 2*

    Typical < 6.0 dB | Maximum < 10.0 dB

  • Rotation Variation

    Typical < 0.5 dB | Maximum < 1.0

  • Back Reflection

    Consult factory

  • Wavelengths

    630 or 650 nm. Consult factory for other multi-wavelength applications.

  • Rotational Speeds

    To 200 rpm. Higher rotational speeds should be discussed with the factory.

  • Temperature

    -40° to +60° C (dry version)

  • Exterior Surfaces

    Aluminum

  • Vibration

    Tested to MIL-STD-167-1 (ships)

  • Shock

    Tested to MIL-STD-810F

  • Terminations

    Standard is with pigtail cables terminated with ST or SMA connectors at each end. Consult factory for other connector types.

  • Pigtail Length

    As required

*Insertion loss values are based on a FORJ with 1-meter plastic pigtails at each end. Add 0.01dB for each meter of 1000-micron core glass added to pigtails or 0.15 dB for each meter of plastic 1000-micron core fiber. Note: Optical values given are based on use with LED sources.

Typical Applications

  • Automation systems
  • Packaging and special machinery
  • Medical equipment
  • Indexing tables
  • Cable reels

FO257 Technical Data Sheet

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