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Miniaturized optical isolator: a small rough-textured cube with two transparent rectangular prisms protruding from opposite sides, one showing a blue-tinted interior, placed on a one-cent coin for scale against a gray background.
FBH news: 05.05.2026

Miniaturized optical isolators for next-generation quantum photonic systems

We are advancing the miniaturization of photonic systems in quantum technologies. With ultra-compact optical isolators for wavelengths from 400 to 950 nm, we address a critical gap in key components.
Close-up of three gold-colored diode laser bars with fine parallel stripes, arranged diagonally on a gray patterned substrate.
FBH news: 21.04.2026

Diode laser pump sources for high-energy lasers in fusion power plants
Round semiconductor wafer viewed at an angle, patterned with evenly spaced small square and circular cells in rows across its surface.
FBH news: 07.04.2026

Microfabricated alkali vapor cells for compact atomic sensing applications
A scanning electron microscope (SEM) image shows a cross-sectional view of a semiconductor device. The image is labeled to identify key components: the 'Emitter,' surrounded by 'Passivation,' resting on the 'Base.' The layers of the device are also labeled: 'InP' and 'InGaAs'.
FBH news: 24.03.2026

Tuning surface properties of dielectrics on InGaAs: on the passivation of InP HBTs for high-frequency devices

Translating ideas into innovation

The Ferdinand-Braun-Institut (FBH) is an application-oriented research institute in the fields of high-frequency electronics, photonics and quantum technologies. It researches and realizes electronic and optical components, modules and systems based on compound semiconductors.

Our research areas

Our offer

Metal cube-shaped prototype with 120 UV LEDs for irradiating the skin.
Prototype Development
The International Space Station (ISS) in space, behind it a part of the earth.
Components, Modules & System for Quantum Technologies
Two needles on a wafer, with which a high voltage measurement is carried out.
Semiconductor Chip Development: Lasers, UV LEDs
Laboratory environment with a technician in protective clothing working at advanced semiconductor equipment. The "APECS" logo and tagline "European Chiplet Innovation" are prominently displayed, with a blue geometric overlay design.
APECS pilot line for chiplet innovation
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Dates

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Career

Working at the FBH Job offers
An employee in the clean room.

Printed & digital

Publications

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Annual reports

Cover image of the Ferdinand-Braun-Institut's 2024/2025 annual report. The collage shows a laser module with a laser chip and other microelectronic elements in a butterfly housing, a microscope with a female researcher in cleanroom clothing, a group of scientists in protective suits and laser safety goggles, a close-up of microchip structures, and a detail of a cleanroom facility. The solar wall of the institute building can be seen in the background. The FBH logo is located at the top right.
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frequent

View all frequent The cover of *frequent*, the FBH’s English-language publication, features bright rays and dots in warm colors. The issue provides information on heterointegration and the Ferdinand-Braun-Institut’s developments in this field. Heterointegration aims to make the benefits of two technological worlds accessible.
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The FBH in numbers

400   Employees

from 30 countries work with us.

295   Patents

do we have in our portfolio - both German and international.

131   Projects

are we currently working on - state funded & industrial contracts.

12   Spin-Offs

have evolved from FBH - the majority of these are still active today.

4000   m² cleanroom & lab space

for state-of-the-art research with high-performance process technology.