Optical Coherent Systems Modeling Engineer

Optical Coherent Systems Modeling Engineer Join to apply for the Optical Coherent Systems Modeling Engineer role at Nokia . Nokia is seeking a Coherent Optical System Architect to join our Optical Systems Group (OSG). The engineer will be responsible for contributing to the development of leading coherent MODEMs based on Infinera's next-generation coherent photonic integrated circuits (PICs). The ideal candidate will develop and maintain state-of-the-art simulation environments that guide Nokia’s MODEM design, including its digital, analog, and optical sub-systems. This involves the modeling and systematic breakdown of all MODEM impairments with continuous alignment to experimental measurements of early prototype hardware. Sophisticated simulation platforms guide major design decisions and serve as invaluable feedback to cross‑functional design teams throughout the entire development cycle of Nokia’s next‑generation optical engines. OSG works closely with many parts of the company; the candidate should anticipate frequent interactions with the digital ASIC team on digital signal processing aspects, with photonic integrated circuit, high‑speed analog ASIC, and line‑systems engineering teams, as well as with customers and internal networking groups on performance projections and network‑level impact of our coherent MODEMs. A key component of this role is the ability to understand and make trade‑offs between optical, electrical, and digital capabilities to optimize overall vertically integrated system performance. How You Will Contribute And What You Will Learn Nokia’s next‑generation communication platforms are defined, developed, and optimized based on sophisticated, end‑to‑end simulation platforms that are continuously fed with measurements of early prototypes and mature hardware. Your simulation results will guide our design and lead key design decisions from initial product definition to early design phases of MODEM development, to configuration optimization in the final stages of manufacturing and production. This requires a detailed and deep understanding of all MODEM impairments in the digital, analog, and optical domain. You will evaluate the effectiveness of state‑of‑the‑art digital signal processing algorithms, estimate the impact of transistor‑level design choices in analog circuits, and predict MODEM performance penalties of integrated optical components such as Mach‑Zehnder modulators and semiconductor optical amplifiers. You will also project the reach of our optical engines based on various linear and nonlinear impairments of the optical fiber channel and deployed line systems. Through frequent interaction with the relevant design teams, you will assist in design, find relationships between low‑level hardware specifications and system‑level impact, and optimize performance‑critical aspects to maximize overall modem performance. Results will be presented internally and documented as electrical and optical performance specifications for next‑generation platforms. Some external and customer‑facing interactions may be required, such as expected improvements of our next‑generation engines on customer networks and contributing to forums discussing multi‑source vendor agreements. Key Skills And Experience Ph.D. in Electrical Engineering or Applied Physics with 0–3 years of industrial or academic experience in optical communications, photonics, high‑speed electronics or systems. Fundamental understanding of optical communication systems, DWDM transmission systems, fiber transmission penalties, photonic integrated components, electronic (integrated) circuits, and signal analysis and processing. Experience and strong mathematical understanding of the analytical and numerical modelling of system‑level optical communication systems and components. Extensive understanding of coherent communication systems, including experience with QPSK, 16QAM, and 64QAM, as well as coding and forward error correction algorithms. Experience characterizing high‑speed RF and mm‑wave interconnects, amplifiers, and components such as S‑parameter, jitter, ENOB, nonlinear compression, and their system implications. Experience in the characterization and modeling of various linear and nonlinear signal impairments, e.g., filtering, noise, nonlinear amplitude and phase distortions, dispersion. Programming experience in Matlab, Python, VB.NET, or C desired. Additional Information Seniority level: Not Applicable Employment type: Full‑time Job function: Engineering and Information Technology Industries: IT Services, IT Consulting, Telecommunications #J-18808-Ljbffr