Fibre optic closures

Fibre optic splice closures are casings for the protection of fibre optic splice connections. This series of fibre optic splice closures contains different variants and sizes for use above, on and below ground. BPO has analysed a number of load cases using FEM simulations to determine and optimise performance.

The new series of closures is made for connecting and splicing fiber optic cables. Depending on the number of connections (288 to 2112 splices), the correct model from the series can be selected. The closures can be placed in various environments, including underground. The internal components are protected by multiple seals.

Three different models have been analysed and optimised by BPO using FEM analyses. For this purpose, long-term loads of approximately 100 kg and impact loads with a 1 kg steel ball were simulated. The long duration loads were assessed in two orientations and the impact loads in three orientations, all cases were simulated for -15°C and 45°C. The products must be able to withstand these loads and the seals must also continue to function correctly.

Based on the FEM analyses, adjustments have been made to the design to improve its performance. Several options for materials have also been assessed, including recycled PP to make the products more sustainable. During this process, BPO worked closely with TKF to make the choices and adjustments as efficiently as possible. For the final release of the product many physical tests are performed, which were successfully endured, also due to the FEM-analyses.

This process has resulted in products with correct performance, that are made from recycled material. The products have been introduced to the market and will be used in future projects.

For more information about the closures, visit the website of TKF.