Rotating joints

Stratos Lightwave has developed a new line of rotary joints for fibre optic systems that allow uninterrupted transmission of data in applications that require a full 360 degree rotation of the fibre.

Stratos Lightwave has developed a new line of rotary joints for fibre optic systems. The devices are the optical equivalent of the electrical slip ring, allowing uninterrupted transmission of data in applications that require a full 360 degree rotation of the fibre.

Stratos Fibre Optic Rotary Joints (FORJ) are available in a variety of package types, wavelengths, and fibre types. They are suitable for a harsh-environment applications such as guidance systems, robotic systems, medical equipment, telemetry systems, remote operated vehicles, surveillance systems, and military equipment, where a large quantity of data must be transported across a rotating axis.

Stratos is also offering design and manufacturing services for custom subsystems using these joints.

The rotary joints support communication using singlemode, multimode, broadband, CWDM, or DWDM technologies. Available variations of Stratos FORJs include units for submersion in water, for high pressure, for miniature systems, for high RPM, for multi-fibre cables, and for broad spectral range use. All versions are resistant to water and dust ingress and feature stainless steel construction with ceramic ball bearings.

Insertion loss is 2dB maximum (< 1dB typical), with a return loss > 45db. Bandwidth is 850nm – 1650nm for standard versions, down to 635nm for broadband. Maximum optical power level is +23dBm, and the maximum physical load on the fibre is 10N (for 900µm fibre). Rotational speeds of up to 100RPM (2000RPM for the high-RPM version) are supported.

While Stratos is offering the Fibre Optic Rotary Joints as individual components, the company is also providing complete subsystems that incorporate these FORJs and will custom-design virtually any optical subsystem using the joints.

Stratos Fibre Optic Rotary Joints are available now. Pricing for the joints themselves varies from $1000 to $5000 each, depending on the version ordered and the options specified.

Pricing for the custom development and/or manufacturing of subsystems using these joints, is determined on a case-by-case basis.

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