Mechanical VibrationsShocks

Optical fiber assemblies withstanding mechanical vibrations and shocks

Thanks to its know-how and expertise, SEDI-ATI Fibres Optiques is able to offer you assemblies and solutions based on optical fiber,  withstanding mechanical vibrations and shocks.

optical fiber component and assembly vibration resistant

Resistance to extreme vibrations and shocks

In an assembly based on optical fibers, the choice of the cladding to protect mechanically the fiber, and the anchoring technologies are essential to avoid mechanical vibrations and shocks. A “hardened” component will be sufficiently robust to enable the optical fiber to be installed in an environment subject to constant vibration. It can therefore be used in environments such as construction sites, heavy plant, offshore platforms or moving vehicles. It can also be found in defence, aerospace and industrial applications.

The problem

The main consequences of mechanical disruptions to uncured optical fiber assemblies are breakage or physical damage to the solution, disconnection of connectors, altered alignment and long-term degradation of performance.


Our know-how and our expertise in extreme environments allow us to offer optical fiber assemblies withstanding mechanical stress such as shocks, vibrations, stretching, bending and accelerations of up to 50 G, thanks to specific assembly techniques. Raw materials, coatings and sheaths are selected to ensure that the product is functional and viable over time.

To provide you with a product capable of withstanding mechanical vibrations and shocks, the fiber is selected from a wide range of fiber with aluminum, copper, carbon, acrylate, etc, coatings. The sealing methods and materials used are adapted to the final application and the environment (epoxy, brazing, glass-soldering…). In addition to our range dedicated to space and aeronautics, which is all the more qualified for extreme conditions, almost all our special fiber optic cables and patchcords, hermetic feedthroughs, bundles, , connectors, multiplexers,… can be adapted to your final use.

Case studies

CO2M: Measuring Carbon Dioxide levels in the atmosphere

SEDI-ATI took part in the project by supplying specific patchcords, fiber-optic bundles, and feedthroughs with our FCXtreme® connector, a compact FC connector for defense and aerospace applications.

Pipe inspection with tethered robotic crawlers

SEDI-ATI offers disposable ultra-lightweight and compact fiber optic spools directly mounted onto tethered robotic crawlers for pipe inspection operations.

Optical fibers play a critical role inside the atomic clock PHARAO

SEDI-ATI optical fiber assemblies are mounted on the space atomic clock PHARAO on board the ISS to test Albert Einstein’s predictions on general relativity.

Optical fibers are used to verify the integrity of the opto-pyrolines in launchers and satellites

SEDI-ATI offers spatialized multimode wavelength division multiplexers to control the integrity of the opto-pyrolines used in launchers and satellites.

Tip timing measurements using fiber optic sensors

SEDI-ATI offers fiber optic on/off probes consisting of bundles of optical fibers resistant to +600 °C in order to perform tip timing measurements during engine tests.

Avionic embedded fiber optic links

SEDI-ATI offers special fiber optic patch cords, cables, and miniature connectors dedicated to aeronautic-embedded fiber-optic interconnections.

Mine action with underwater wire-guided robots

SEDI-ATI offers disposable ultra-lightweight and compact fiber optic cables directly mounted onto tethered underwater robots for inspection and combat missions.

Opto-pyrotechnics to protect armored vehicles

SEDI-ATI offers disposable ultra-lightweight and compact deployable fiber optic spools to be directly mounted onto unmanned ground vehicles.

Optical fibers drive land robots in clearance and demining operations

SEDI-ATI offers disposable ultra-lightweight and compact deployable fiber optic spools to be directly mounted onto unmanned ground vehicles.

Don’t hesitate to contact us with your requirements