FEMTO Engineering is an R&D center of the foundation FC Innov

From science to society

Time-Frequency

Time and frequency stability control for your critical systems.

The control of time and frequency is a critical issue in many industrial and scientific fields: space navigation, metrology, telecommunications, precision instrumentation, radio astronomy. Uncontrolled frequency instability can compromise the reliability of an entire system.

FEMTO Engineering has an internationally recognized expertise in this field, resulting directly from the research work of the FEMTO-ST institute on oscillators and time-frequency metrology. The team offers industrial services in characterization, electronic design and engineering of measurement benches, with an access to the Oscillator-IMP platform and the ULISS cryogenic sapphire oscillator.

For what needs?

Characterization of the frequency stability of your components

Phase noise measurement, short-term frequency stability, electronic noise, characterization of active and passive components in RF, microwave and optical domains.

Design of a precision electronic system

Development of analog and digital electronic boards, FPGA, embedded Linux, measurement and acquisition interfaces for time-frequency applications.

Development and optimization of a measurement bench

Design and production of dedicated measuring benches, expertise on existing architectures, optimization of performance and metrological traceability.

Access to an ultra-stable time reference

Use of the ULISS cryogenic sapphire oscillator as a frequency reference for your measurements or systems requiring exceptional stability.

Our services

Time-frequency characterization

Phase noise measurements, short-term frequency stability, electronic noise, Faraday cage measurements. References plotted on a hydrogen MASER.

Custom electronic design

PCB (Kicad, Eagle), Xilinx FPGA (Vivado), Linux embedded on ARM (Buildroot), analog and digital cards for time-frequency applications.

Measurement benches engineering

Design and production of benches dedicated to your applications, expertise and optimization of existing measurement architectures.

Access to the Oscillator-IMP platform

Services provided by our experts, direct access to the instrumentation for your teams or equipment rental at your premises.

Rental and sale of the ULISS oscillator

The ULISS cryogenic sapphire oscillator is available for rent or sale, for applications requiring frequency stability below 3×10⁻¹⁵.

Application examples

Spatial & navigation

Ultra-stable frequency references for navigation and positioning systems, synchronization of onboard systems, qualification of oscillators for space environments. For industry and space agencies that need guaranteed frequency stability in extreme conditions.

Metrology & precision instrumentation

Characterization of time-frequency components with IS traceability, development of reference measurement benches, calibration of industrial oscillators. For metrology laboratories and manufacturers who need reliable and recognized measurements.

Telecommunications & microwaves

Characterization of RF and microwave components up to 40 GHz and beyond, electromagnetic compatibility measurements, frequency synthesis. For teams developing communication systems or radar equipment requiring precise frequency measurements.

Radio astronomy & fundamental physics

Ultra-stable reference sources for radio telescope arrays, long distance synchronization, fundamental physics and relativity experiments. For research teams who need the best stability performance available worldwide.

Industry & critical systems

Qualification of industrial oscillators, integration of frequency references in constrained environments, development of embedded measurement systems. For manufacturers whose control, synchronization or measurement systems depend on a stable and verifiable frequency.

A partner for your innovation projects

FEMTO Engineering is one of the few engineering centers in France able to offer time-frequency services with metrological traceability at the level of the International System. For an industrial company whose systems require exceptional frequency stability—space, metrology, critical telecommunications—this is direct access to expertise stemming from decades of research on oscillators and metrology, with the equipment and references that go with it.

Our technical means

Platform
Oscillator-IMP

The platform for time-frequency and microwave characterization, accessible to manufacturers via FEMTO Engineering.

Platform
MIMENTO

MIcrofabrication for MEchanics, Nanosciences, Thermics, and Optics

Phase noise measurements

Benches 5125A, FSWP, Phase Station. Characterization of active and passive components: amplifiers, oscillators, filters.

Microwave characterization

Network analyzer up to 20 GHz, spectrum analyzer up to 26 GHz, characterization up to 40 GHz and beyond, EMC Receiver.

IS traced time references

All equipment referenced on MASER with traceable hydrogen in the International System. RF, microwave and optical reference signals from ULISS oscillators or ultrastable optical cavities.

Faraday cage

Electronic measurements in shielded environments for the isolation of external disturbances.

Programming and automation

Python, C, Qt/C++, PyQt, Visual Basic, Labview for automation of measurements and human-machine interfaces.

The benefits of this technology

Time references plotted on the International System via MASER with hydrogen

Frequency stability of the ULISS oscillator less than 3×10⁻¹⁵ between 1 s and 10,000 s

Microwave characterization up to 40 GHz and beyond

Measurements in an shielded environment (Faraday cage) for optimal insulation

Expertise resulting from fundamental research in time-frequency metrology at an international level

A few realizations

Ultra-stable ULISS cryogenic oscillator

091208-FEMTO-5146-scaled

Electronic design

HF2

Characterization of precision electronic systems

HF3-1024x682

Contact us

Christophe Fluhr
PhD Time and Frequency Engineer
+33 (0) 381 402 948
FEMTO Engineering
TEMIS Building 15B avenue des Montboucons – 25000 BESANÇON

Partners and associated ecosystem

Logo Bionoveo
Bionoveo
SOITEC
Soitec
Logo Syrlinks
Syrlinks
LogoFirstTF
FIRST-TF
femto-logo
FEMTO-ST Institute
Latest news Time-Frequency
InstallationTPRésonateur
July 3, 2026

2026 European Frequency and Time Seminar

EFTF 2026
April 20, 2026

From April 21 to 23, 2026: EFTF conference in Noordwijk, Netherlands

PhotoAccueil
April 3, 2026

April 3, 2026: CPME 25 visit

Visite
February 26, 2026

Laetitia Martinez visit at the FEMTO-ST Institute

Vous avez un projet nécessitant une maîtrise de la stabilité de fréquence ?

Décrivez-nous vos besoins de mesure, vos contraintes techniques et vos objectifs. On évalue la faisabilité et on vous répond rapidement.
4-step method

Our support method

1
Study & feasibility
Analyse, frame and validate your technical assumptions
2
Technological development
Design and experiment solutions adapted to your constraints.
3
Prototyping & pre-series
Transform the concept into a functional object ready to evolve.
4
Industrial transfer
Train your teams and integrate the processes for good.

Research-based engineering, geared towards industry

FEMTO Engineering supports the companies in the development of advanced technologies by relying on the scientific excellence of the FEMTO-ST institute. FEMTO Engineering has a dedicated team of engineers and specialized experts at the service of your innovation projects, who are immersed among the FEMTO-ST research teams.

Our role: to transform the academic research results into concrete industrial solutions.

Bourgogne-Franche-Comté_2016

Financial support from the Région Bourgogne-Franche-Comté

1577028368405

Carnot accreditation

Résultat-de-recherche-dimages-pour-CIR-officiel

Eligible for Research Tax Credit (CIR)

Contact the department Time-Frequency