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Single-channel Fiber Optic Rotary Joints (R series)
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Electrical Slip Rings
Fiber Optic Slip Rings
Fiber Optic Rotary Joints



The R series Single-channel (SM or MM) rotary joints are the most versatile designs the market has ever seen. The rugged body allows fiber pigtail, ST, or FC receptacles on either the rotor side or the stator side. One can configure the package to fit his need exactly. The standard base models are RPT, RFC, and FST for pigtails, FC/UPC, and ST/PC receptacles.

The R series features extremely low insertion loss and impressive return loss performance for both singlemode and multimode fibers. Model RPTA guarantees return loss as high as 50 dB. These rugged devices can operate under arctic temperature environment (See insertion loss and return loss temperature cycling plots on the left). All models are dust and water tight for harsh environment. Optional pressure compensation is available with model RPTPC for underwater applications.
Wavelength range
650-1650 nm
Insertion loss
<2 dB (typical: <1 dB)
Insertion loss ripple
<+/-0.25 dB (typical: +/-0.15 dB)
Return loss (SM&MM)
>40 dB (RPT), >30 dB (RFC & RST), >50 dB (RPTA)
Maximum speed
2,000 rpm
Pressure compensation
10,000 psi (RPT only)
Pulling strength
10 N
Optical power handling
23 dBm
Working temperature
-40 to 65 C
Storage temperature
-50 to 85 C
Package style
Pigtail, or receptacles (FC, FC/APC, or ST)
Housing material
Stainless steel
Fiber types
SM or MM, 3 mm Kevlar/PVC or 2.9 mm armored jacket
Connector types for RPT
FC, SC, ST, SMA, or LC (APC finishes also available)
17 mm dia. (body) x 26 mm dia. (flange)
~50 g
IP rating
IP 68 for all models