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| FORJ: Two-channel fiber optic rotary joint (MJ2 series, MM) |
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The dual-pass Fiberoptic Rotary Joint (FORJ) connects two independent fiber channels simultaneously.
It allows uninterrupted transmission of optical signals while rotating along the common mechanical axis.
Princetel's unique patented design provides customers with significant advantage on size, performance, availability, and cost.
The device accommodates two standard multimode fibers.
Note: The MJ2 model is specifically designed for LED type of light sources only. If your application is laser based, check out our ZJn or
MXn series FORJs. They are also good for singlemode fibers. All insertion loss and return loss measurements are performed by joining the FORJ to the light
source through fusion splice (without the use of connectors). Insertion loss of all receptacle type of FORJs, such as RST, RFC, and RFCX, are measured with connectors of
similar type. Their return loss is not measured.
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| SPECIFICATIONS |
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 PARAMETERS |
VALUES |
| Wavelength |
1310/850 nm or 1310/1550 nm |
| Insertion loss |
<4 dB/channel 1, <6 dB/channel 2(Premium: <4 dB) |
| Insertion loss WOW |
<+/-1 dB |
| Return
loss |
~12-15 dB |
| Crosstalk |
>50 dB |
| Maximum speed |
100 rpm |
| Pulling strength |
10 N (900 um jacket) |
| Start up torque |
<0.2 Nm |
| Estimated life cycle |
100-200 million revolutions |
| Optical power handling |
23 dBm |
| Working temperature |
-40 to 72 C |
| Storage temperature |
-45 to 75 C |
| Package style |
Pigtails on both ends |
| Housing material |
Stainless steel |
| Fiber types |
MM w/3 mm cable (Kevlar lined) or armor |
| Connector types |
FC, SC, ST, SMA, or LC |
| Dimensions |
20 mm dia. x 65 mm length |
| Weight |
100 g |
| Vibration |
MIL-STD-167-1A |
| Mechanical shock |
MIL-STD-810G |
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IP rating |
IP 60 (optional IP65) |
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CREATE YOUR PART NUMBER
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MJ2-
wavelength code-
fiber code-
connector code
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DOCUMENTS DOWNLOAD
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