We are a work team specialized in the design and manufacture of optical cables for communications.

Our main values are:

Full commitment to fulfill our client´s needs.

We strongly believe in innovation as an essential value for continuous improvement and growth.

We also believe that truthfulness and honesty are irreplaceable values to build long-lasting bonds with our customers.

Continuous training and search for new knowledge represent fundamental pillars of our company.

Full respect for the environment where we operate.


Fiber optics are basically made up by two concentric cylinders (core – cladding) which are made of silicon dioxide, SiO2, that is, crystal. It consists in a fragile and brittle material that although it shows a superb elastic area, it lacks plastic deformation, thus passing quickly from its elastic limit to breakage. This fragility makes it necessary to protect the fiber optics to provide mechanical and environmental resistance.

Light pulses travel through the core of the optical fiber, while the cladding (125µm) acts as a “reflective screen”, forcing the light beam to travel throughout the core. This is possible because the refraction index of the core (n1) and cladding (n2) are different.

Mainly, there are two types of protection of the optical fiber:

Primary protection
Consisting of a first acrylate coating placed over the cladding. This is a standard coating structure in the fiber optic industry. The diameter of this protective layer is usually of 250 µm.

Secondary protection
There are two types:

Loose Tube Protection
Optic fibers are placed within thermoplastic tubes that hold them loosely. The same tube holds more than one optic fiber, that is, the secondary protection is not individually applied to each fiber.
There are two different technologies to achieve water resistant properties for loose tubes:

  • “Gel Filled Loose Tube”: the tubes are filled with a non-hygroscopic gel to avoid changes in viscosity in a broad range of temperature. This physical property of the gel aims to avoid dripping when cables are in a vertical position and withstanding variations in temperature.
  • “Dry Loose Tube”: the resistance is achieved by means of special water blocking yarns that significantly increase their volume upon the eventual entering of water to the loose tube, thus avoiding water leaking.
    This technology provides the advantage of avoiding the cleaning of the optical fibers prior to fusion splicing, and consequently, reducing installation times. Another advantage of this technology is that since the optical fibers are not embedded in gel, their separation and identification is easier to achieve.

Tight Buffer Protection
this is the logical structure, that is, a layer of thermoplastic material tightly fitted to the surface of the optical fiber. Each fiber has individual secondary protection, thus achieving excellent resistance to “manipulation” and the necessary isolation against humidity.
This type of adjusted secondary protection (900 µm = 0,9 mm) is mainly used in cables in which the direct connectorization of the fibers will take place, that is, where fusion splicing is not required (manufacturing of PatchCords and PigTails and point-to-point installations). It is also considered an extremely advantageous cable structure for indoor installations (LAN networks, etc.) because these are usually flexible and fireproof cables.

At Optinet S.R.L. we develop the technology to produce optical cables with both types of structures: Loose Tube and Tight Buffer fibers. In this way, we achieve a wide variability of products for the different uses required by today’s demanding telecommunications industry.

+5411 6085-3054

OPTINET S.R.L.  Optic conductors

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