MRn-FORJ Series
Multi Channel Fiber Optical Rotary Joint
MRn series multi-pass Fibre optic Rotary Joints (FORJs) carry the largest channel count in our FORJ lineup. 20-36 independent fibre channels are offered as standard options. The most common is the 24-channel version.
Loss and back reflection is uniform across all channels. There is no channel “drop off” or “blind spot” during rotation. They also feature low crosstalk performance (<-60 dB) for both single and multi-mode fibres. Like our other multi-channel FORJs, all channels can accommodate either singlemode or multimode fibres. It is also possible to combine the two types of fibres in one device across three optical windows (850, 1310, and 1550 nm).
As a rule of thumb, always consider a lower channel count first for smaller sizes, lower cost, faster delivery, and easier handling. However, if a massive channel count is necessary, the MRn series FORJs offer the best solution.
Note: All insertion loss and return loss measurements are performed by joining the FORJ to the light source through a fusion splice (without the use of connectors). Insertion loss of all receptacle types of FORJs, such as RST, RFC, and RFCX, are measured with connectors of similar type. Their return loss is not measured.
Quick Specifications
| Parameters | Values |
| Wavelength | 1270-1610 nm for SM; 850 and 1310 nm for MM |
| Maximum Speed | 200 rpm |
| Housing Material | Stainless Steel |
| Fiber Types | SM or MM w/3 mm jacket, 1 m (Kevlar/PVC or armor) |
| Vibration | MIL-STD-167-1 |
| IP Rating | Up to IP 65 |