FOC Cabler Joint:

-The need of the NBN.


Below diagram shows the overview of the network topology where there is such a requirement.

As the demand for high bandwidth is increasing and the time for implementation is reducing, let us discuss about innovative method to speed up and simplify the whole process. One such innovation is the FOC Cabler Joints.


There is an acute requirement in FOC cable joint where we have to distribute the fiber from different tubes inside the incoming cable to the different fibers in various tubes in the outgoing cable. So the conventional method of splicing and placing the splice point over the trays is not suitable.



The fiber distribution between the incoming cable and the outgoing cable are as per the below picture:

The conventional cable splice tray and jumping of bare fiber between different trays is not recommended. Here comes the fiber distribution over a omni directional fiber splice support and the cabler joint.


Let us stop here about the requirement and we like to introduce the new method of Fiber Optic Cable splicing with Cabler Joints. The below picture is self explanatory.

Cabler - Advantages

üCan achieve any type of joint in terms of number of cable, number of fibers per cable and number of branching.

üCost savings in conventional closure, ODF, Patch cords and work man hours.

üOccupies less space and volume compared to the regular closures.

üNo logistics problems of closure ordering with specified type and procurement delays.

üCustom made for site conditions.

Cabler - Disadvantages

•        Not re-workable in the same joint closure as it will be molded. (There are technical ways available and experts are capable of re-operating this cabler joints)
•        The contractor / the technician making this cabler joint has to give guarantee of the splicing and molding compared to the guarantee of the cable manufacturer.
•        The joint is considered as part of the cable.

Fiber Amplification:

Short for erbium-doped fiber amplifier. EDFA is an optical repeater device that is used to boost the intensity of optical signals being carried through a fiber optic communications system. An optical fiber is doped with the rare earth element erbium so that the glass fiber can absorb light at one frequency and emit light at another frequency. An external semiconductor laser couples light into the fiber at infrared wavelengths of either 980 or 1480 nanometers. This action excites the erbium atoms. Additional optical signals at wavelengths between 1530 and 1620 nanometers enter the fiber and stimulate the excited erbium atoms to emit photons at the same wavelength as the incoming signal. This action amplifies a weak optical signal to a higher power, effecting a boost in the signal strength.

Fiber optic use in the 1980s required the light signals to be converted back into electronic signals at the data's final destination. EDFA removes this step from the process: all the steps of its operation are the actions of photons, so there is no conversion of optical signals to electronic signals.

Erbium had little commercial uses before the age of fiber-optic telecommunications. Now it is an important constituent of signal repeaters in long-distance telephone cables.

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