A French SME specialized in fiber optic assemblies for extreme environments

Our solutions are designed to survive very hostile conditions such as cryogenics, very high temperatures, vacuum, pressure, corrosion, or radiation.


Don’t hesitate to contact us with your specific requirements.



ATI Optique

ATI Optique was founded by Louis Malavieille.

  • “Alliance Technique Industrielle”
  • R&D and manufacturing


SEDI Fibres Optiques

SEDI Fibres Optiques was co-founded by Patrice and François-Louis Malavieille.

  • “Société Européenne de Distribution Industrielle”
  • marketing and sales


SEDI-ATI Fibres Optiques

ATI Optique and SEDI Fibres Optiques merged their activities.

A new corporate website

Learn more about SEDI-ATI, its products and their applications, though this new mobile friendly website in responsive design.


A rejuvenated visual identity

While retaining the fundamentals of the brand – name and colors, the logo construction lightens up to sign the beginning of a new phase.



SEDI-ATI Fibres Optiques was acquired by J-F Vinchant Holding Strategy. It is chaired by Jean-François VINCHANT and accompanied by IDF Capital.


New investment fund

SEDI-ATI Fibres Optiques is now owned by FIBER OPTICS GROUP, a new holding company composed of J-F Vinchant Holding Strategy (chaired by Jean-François Vinchant) and Yotta Capital Partners.

Major areas of focus

  • extreme environments
  • space
  • export


  • Listening to our partners: customers, suppliers, employees, institutions, …
  • Benevolence towards them
  • Satisfaction of our partners
  • Teamwork for a close collaboration with our partners
  • Loyal and faithful relationship
  • Passion for technological and societal issues
  • Innovation at the heart of our projects
  • Surpassing ourselves to push our limits
  • Living up to our challenges
  • Culture of quality and results
  • High level of expertise
  • Increase in skills
  • A socially responsible company
  • Integrity of our behavior
  • Sovereignty and French independence


  • All
  • CEO
  • Financial
  • Human Resources
  • Management Committee
  • Marketing
  • Production
  • Purchasing manager
  • Quality
  • R&D
  • Sales

Sylvie SAUTEREAU MARTIN – Industrial director

With a university diploma in physical measurements with instrumental techniques, and a master’s degree in materials engineering, Sylvie SAUTEREAU-MARTIN began her career at SEDI-ATI Fibres Optiques (formerly ATI […]

Stephan GOUMAIN – Purchasing manager

After a degree in mechanical engineering and computer-integrated manufacturing with a specialization in the area of sales at the University of Evry, Stephan GOUMAIN started his […]

Sofiane BAHBAH – R&D Director

Sofiane Bahbah joined SEDI-ATI Fibres Optiques in January 2022 as Research and Development Director. Engineer and Ph.D. in non-linear optics, he started his career, in 2001, as researcher […]

Sofia-Emeline BERRADA – Export Sales Assistant

With a Master's degree in International Business and Intercultural Negotiation, Sofia has had the opportunity to work both in France and abroad. The international aspect of […]

Sandra SAVAGLIO – Human resources manager

Sandra SAVAGLIO has a degree in business management and administrations with a specialization in finance and accounting, as well as a master’s degree in human resources […]

Julien CROUZILLES – Technical sales engineer

Julien CROUZILLES, Technical Sales Engineer, joined SEDI-ATI Fibres Optiques in 2005. He started as a technician specialized in optical fiber assembly technologies, bringing a strong support to the […]

Jean-Marc SOREL – Head of Quality and Operational Excellence

Jean-Marc SOREL joined SEDI-ATI Fibres Optiques in May 2019 as Quality and Operational Excellence Manager. With a master's degree in physics and chemistry, Jean-Marc began his […]

Jean-François VINCHANT – President and CEO

Jean-François VINCHANT, Chief Executive Officer and President of SEDI-ATI Fibres Optiques, has taken over the company since July 2016 to consolidate the optical fiber technology in France. Graduated in […]

Jade ALFIER – Sales Assistant

After three years of commerce and customer relations studies in a work-study program, Jade is pursuing a Master’s degree in “Marketing-Sales”, and “Customer Relations Management, Quality, […]

Hervé AUBÉ – Project manager, business line director

Hervé AUBÉ joined SEDI-ATI Fibres Optiques (formerly SEDI Fibres Optiques) in January 1987, as a Technical Sales Engineer before becoming Product Manager. Three years later, he was […]

Gaëlle CHEVIN – Marketing and communications assistant

After several years of study in sales, customer relations, and operational marketing, Gaëlle CHEVIN is currently doing a Master's degree in Business Engineering, specializing in Digital […]

France THOMAS – Administrative and financial director

France THOMAS began her career at SEDI-ATI Fibres Optiques (formerly ATI Optique) in 1988 in the accounting and finance division, where she successively held several positions before being […]

Emmanuel LECLERC – Technical sales engineer

Emmanuel Leclerc, an Optronics engineer, has held several different positions, giving him extensive experience in photonics. In particular, he was project manager and then export manager […]

Claire GUYONNET – Sales and marketing director

Claire GUYONNET joined SEDI-ATI Fibres Optiques in 1995, at the early beginning of the optical activity of the company. By listening to customers and their specific needs in […]

Axel GUÉDÉ – Technical sales engineer

Axel GUÉDÉ joined SEDI-ATI Fibres Optiques in September 2021, as a Technical Sales Engineer. Currently on a VIE, Axel participated in the opening of our local sales office […]

Amandine DEBLOUDTS – Marketing communications manager

Amandine DEBLOUDTS joined SEDI-ATI Fibres Optiques in June 2018, at the establishment of full-time Marketing-Communications Manager post. After technical studies in the optronics, she started as an Application […]