Senior III-V Photonic Modulator Designer

Imec; Luik; On-site; EUR 65,000 - 90,000; Full time

Job summary

imec is seeking an III-V Active Photonic Device Expert to lead simulation-driven design and experimental validation of high-speed electro-absorption modulators on silicon-photonics platforms. The role spans heterostructure design, device modelling and fabrication-aware optimisation within a multidisciplinary team.

Successful candidates will have a PhD and at least 3 years of hands-on III-V photonic device experience, with strong Python skills and proficiency in industry-standard TCAD/optical

Qualifications

• PhD in electrical engineering, photonics, applied physics, semiconductor physics or a closely related discipline.
• At least 3 years of hands-on experience with III-V photonic devices.
• Experience with waveguide-integrated III-V modulators or photodetectors on silicon-photonics platforms.
• Strong understanding of semiconductor physics, quantum mechanics, heterostructure band engineering and optoelectronic-device operation.
• Ability to translate material and active-region properties into complete electrical and photonic device designs and to interpret simulation outputs.
• Experience with band-structure, TCAD, multiphysics or optical simulation tools (Nextnano, Sentaurus, Silvaco Atlas, Ansys Lumerical, COMSOL).
• Scientific programming in Python with automation, data analysis and parameter sweeps.
• Strong collaboration and clear technical communication across modelling, epitaxy, process, design and characterization.
• Willingness to relocate to Belgium; relocation support provided.

Responsibilities

• Design and optimise waveguide-integrated III-V active photonic devices, primarily high-speed electro-absorption modulators.
• Engineer multi-quantum-well heterostructures for target wavelength, optical loss, voltage and speed.
• Model band structure, QCSE, carrier transport, optical absorption and electric-field distribution.
• Develop complete electro-optical device models, including geometry, capacitance, resistance and high-speed response.
• Design III-V integration with silicon or silicon-nitride waveguides and optimise coupling and transitions.
• Incorporate epitaxial, process, thermal and manufacturing constraints into robust device designs.
• Translate concepts into layouts and test structures, then correlate simulations with electrical, optical and RF measurements.
• Collaborate across epitaxy, integration, process, characterisation, circuits and systems, and contribute to roadmaps, IP and publications.

Skills

III-V photonic devices experience

Python programming

Technical communication

Multidisciplinary collaboration

Education

PhD in electrical engineering / photonics / semiconductor physics

Tools

Nextnano

Synopsys Sentaurus

Silvaco Atlas

Ansys Lumerical

COMSOL

Job description

imec is seeking an III-V Active Photonic Device Expert to lead simulation-driven design and experimental validation of high-speed electro-absorption modulators on silicon-photonics platforms. The role spans heterostructure design, device modelling and fabrication-aware optimisation within a multidisciplinary team.

Successful candidates will have a PhD and at least 3 years of hands-on III-V photonic device experience, with strong Python skills and proficiency in industry-standard TCAD/optical