Multi-Channel Fibre Optic Rotary Joint | JXn Series SM & MM

When channel count is eight or higher, the stator body length is slightly longer. Download PDF drawings for details. 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 fibers.

This model shares 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 fibers in one device across three optical windows (850, 1310, and 1550 nm).

SPECIFICATIONS
PARAMETERS	VALUES
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)