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Mode Conditioning Fiber Patch Cord
Release Date: 2021-09-19

Mode regulation fiber jumper is a duplex multi-mode jumper with a short single-mode fiber at the beginning of the transmission length.


It is designed to solve the technical problems involved in using single-mode equipment over existing multi-mode cable equipment. Mode regulated fiber PATC H CORD is designed to extend the distance of installed fiber optic devices beyond their original intended applications and improve data signal quality

The pattern adjuster is built in the form of a simple duplex jumper, so it can be easily installed into the system without additional components or hardware. They range in length from one to one meter and can support almost any network topology.

This jumper is needed because the -LX(1300 nm) transceiver module for Gigabit Ethernet has single-mode emission characteristics. These modules must be suitable for both single-mode and multi-mode optical fibers. Firing a single-mode laser into the center of a multi-mode fiber produces multiple signals that interfere with the receiver at the other end of the fiber. These multiplexing signals caused by differential mode delay (DMD) effects severely limit the cable distance of gigabit Ethernet. Mode-regulated jumpers allow single-mode emission away from the center of the multi-mode fiber, thereby eliminating these multi-channel signals. This offset produces an emission similar to typical multi-mode LED emission.

What to know when connecting an existing multimode cable device to a Gigabit LX device using mode regulation cables.

Usually used in pairs, mode regulation cables usually require an MC cable on each end to connect the device to the cable device. The only reason to order an odd number of mode adjustment cables is to have a spare cable on hand.

If your gigabit LX switch is equipped with SC or LC connectors, be sure to connect the yellow branch (single mode) of the cable to the transmitter end of the device and the orange branch (multi-mode) to the receiving end of the device. This configuration must be maintained on both ends. The exchange of sending and receiving can only take place on the cable equipment side. 

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