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Photonics Days 2025
/en/events/photonics-days-2025
FBH will be contributing to this year’s Photonics Days.
Self-consistent thermal-opto-electronic model for the dynamics in high-power semiconductor lasers
/en/research/publications/self-consistent-thermal-opto-electronic-model-for-the-dynamics-in-high-power-semiconductor-lasers
High-power broad-area diode lasers (BALs) generate significant heat, impacting performance. A 2+1 dimensional traveling wave (TW) model incorporates heating effects through an iterative coupling of…
Enhancing wire bonding capabilities for advanced module assembly
/en/research/research-news/enhancing-wire-bonding-capabilities-for-advanced-module-assembly
We have extended our wire bonding capabilities with a new semi-automatic system featuring an integrated coaxial camera. This addition enables precise wire bonding even in areas with restricted…
Beyond 650 V Dynamic Switching of High Voltage AlGaN/GaN/AlN HEMTs on Monocrystalline AlN Substrates
/en/research/publications/beyond-650-v-dynamic-switching-of-high-voltage-alganganaln-hemts-on-monocrystalline-aln-substrates
We present AlN-based GaN-channel HEMTs with an undoped AlN-buffer layer, MOCVD-grown on a 1" PVT-grown monocrystalline AIN substrate for high-voltage switching applications. These devices achieve…
Miniaturised optical isolators for realising micro-integrated photonic modules in quantum technology applications
/en/research/publications/miniaturised-optical-isolators-for-realising-micro-integrated-photonic-modules-in-quantum-technology-applications
At the Ferdinand-Braun-Institut (FBH), we have been using our proven hybrid micro-integration technology for more than a decade to realise ultra-compact photonic modules for quantum applications [1].…
Micro-integrated Light Control Units for Low-SWaP Quantum Optical Sensing Applications
/en/research/publications/micro-integrated-light-control-units-for-low-swap-quantum-optical-sensing-applications
Quantum optical sensors, such as atom interferometers or optical clocks, receive increasing interest for deployment in the field and even in space, enabling various applications ranging from inertial…
Integrated atomic devices for field-deployable timing and sensing applications
/en/research/publications/integrated-atomic-devices-for-field-deployable-timing-and-sensing-applications
In recent years, new generations of atomic devices for timing, field sensing and communication have been demonstrated in field and space environments, but transfer into further miniaturized systems…
Testing a Photonic Chip Hosting an Actively Tunable Laser-Written Waveguide Interferometer with an Integrated 2D Material on a Satellite
/en/research/publications/testing-a-photonic-chip-hosting-an-actively-tunable-laser-written-waveguide-interferometer-with-an-integrated-2d-material-on-a-satellite
Recent advances in quantum technologies have led to the demand for miniaturized and convenient platforms for applications, which can be found in photonic integrated chips. We have fabricated a device…
Tunable and Wavelength-Stabilised Laser Based on a Bragg Reflection Waveguide for Spontaneous Parametric Down Conversion
/en/research/publications/tunable-and-wavelength-stabilised-laser-based-on-a-bragg-reflection-waveguide-for-spontaneous-parametric-down-conversion
Bragg reflection waveguide lasers offer compact solutions for the generation of photon pairs through spontaneous parametric down conversion, by simultaneously generating the lasing pump light and…
Surrogate modeling using coupled mode theory for accurate prediction of the optical response of long Bragg gratings
/en/research/publications/surrogate-modeling-using-coupled-mode-theory-for-accurate-prediction-of-the-optical-response-of-long-bragg-gratings
In this study, we propose a surrogate modeling approach that uses coupled mode theory (CMT) for accurate and efficient prediction of the reflectance and transmittance spectra of Bragg gratings. It is…