Multi-Channel Fibre Optic Rotary Joint - JXn Series from Princetel

JXn series multi-pass Fibre optic Rotary Joints (FORJs) accommodate 3-12 independent fibre channels as standard options. 13-60 channels are offered on custom basis. Loss and back reflection are uniform across all channels. There is no channel "drop off" or "blind spot" during rotation. They feature low crosstalk performance (<-60 dB) for both single and multi-mode fibres.

The JXn series fiber optic rotary joints share the same body diameter and mounting schemes with MJn series FORJs. However, the JXn design makes it more convenient to integrate with electrical slip rings. Pressure compensation is available as an option. 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).

Wavelength 1310 & 1550 nm (SM); 850 & 1310 nm (MM)
Insertion loss <5 dB (typical: 2-3 dB)
Insertion loss ripple ~+/-0.5 to 1 dB
Return loss 45 dB
Crosstalk >50 dB (typical: 63 dB)
Analog bandwidth (B) >5 GHz (10 GHz measured assuming PWxB=0.3)
Data rate (digital BW R) >10 Gbps (M=2; 20 Gbps if M=4 in Hartley's Law)
Maximum speed 100 rpm
Pulling strength 10 N
Start up torque <1 Nm
Estimated life cycle 50-100 million revolutions
Optical power handling 23 dBm
Working temperature -20 to 65 C
Storage temperature -25 to 75 C
Package style Pigtails or FC and ST receptacles
Housing material Stainless steel
Fibre types SM or MM w/3 mm cable, 1 m (Kevlar reinforced)
Connector types FC, SC, ST, SMA, LC or /APCs
Dimensions 67 mm dia. x 122 mm length
Weight 2.5 kg
Vibration MIL-STD-167-1
Mechanical shock MIL-STD-810F
IP rating IP 65 (IP 68 optional)

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