Principal Coherent Systems Engineer

Nokia; Bourgogne-Franche-Comté; Sur place; EUR 90 000 - 130 000; Plein temps

Avantages offerts par ce poste

Flexible working arrangements

Medical insurance

Pension plan

Company car

Résumé du poste

Nokia seeks a Coherent Optical System Architect to drive the design and optimization of next-generation coherent MODEMs. You will work with early prototype hardware, feed data back to PIC and ASIC teams, and push baud rates while balancing optical, electrical, and digital aspects.

You will collaborate with control/firmware teams, perform rapid testing, and document performance specs for next-gen platforms, including prototype modules and field trials.

Qualifications

• PhD in Electrical Engineering or Applied Physics with 3+ years industrial optical experience.
• Solid understanding of DWDM, photonics, and signal processing.
• Hands-on system-level optical hardware experience.
• Experience with QPSK/16QAM/64QAM and coding/FER algorithms.
• Characterization of RF/mm-wave systems and ENOB

Responsabilités

• Own optical design, optimization methods and stabilization techniques.
• Characterize MODEMs, assess SNR/OSNR, and BER under interference.
• Collaborate with coherent ASIC, control/firmware, and test teams.
• Present results as electrical and optical performance specs

Connaissances

PhD in EE/Applied Physics

Optical communications

Coherent communications

Modulation formats (QPSK/16QAM/64QAM)

RF/mm-wave measurements

MATLAB

Python

System-level optical hardware

Formation

PhD in Electrical Engineering or Applied Physics

Outils

Matlab

Python

High-speed test equipment

Description du poste

Job Description

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 be prepared to work with early prototype hardware to get an initial look at product performance and provide rapid feedback to the PIC and high-speed analog ASIC teams. Performance characterization will include MODEM SNR, OSNR tolerance, systematic breakdown of the MODEM impairment penalties, sensitivity studies and model alignment. OSG works closely with many parts of the company and the candidate should anticipate frequent interactions with the coherent ASIC team on coherent signal processing issues and ADC/DAC ENOB, with optical, high-speed analog ASIC, and systems engineering teams. A key component of this role is the ability to understand and make tradeoffs between optical, electrical, and digital capabilities in order to optimize the overall system performance.

How You Will Contribute And What You Will Learn

Nokia's next generation communications platform will be defined, developed, characterized, and optimized on your optical testbed. Your experimental data will fuel our design, starting with off-the-shelf components, evolving to prototype PICs, and eventually taking the form of the final integrated embedded systems or coherent pluggable modules. This requires ownership of the optical design, optimization methods, and stabilization techniques. One particular component of your research will be pushing our optical systems to higher baud rates. Frequently used diagnosis capturing coherent waveforms on a high-speed oscilloscope and performing coherent signal processing on waveforms, and measuring bit-error rate performance in the presence of optical noise and other impairments. Of particular interest will be pushing to faster baud rates. Through frequent interaction with the control & firmware teams, you will assist in optimizing performance-critical aspects such as powerup self-calibration, receive acquisition, real-time performance monitoring, and in-service performance optimization. These algorithms will be tested during the implementation stage to ensure they operate properly. Results will be presented internally and documented as electrical and optical performance specifications for next-generation platforms. Some customer-facing interactions may be required, such as field trials using prototype equipment, or debugging unusual field failures that cannot be resolved through the normal customer service process.

Key Skills And Experience

• PhD. in Electrical Engineering or Applied Physics with minimum of 3 years of industrial 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.
• Hands-on experience working with system-level optical communication hardware and components.
• Extensive understanding of coherent communications 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.
• Characterization of RF/mm-wave systems, such as S parameter measurements, jitter measurements, and ADC/DAC performance and ENOB
• Hands-on experience with high-speed optical and electrical test, and measurement equipment control and data acquisition.
• Programming experience in Matlab, Python, VB.net, or C desired.

About Us

Advancing connectivity to secure a brighter world. Nokia is a global leader in connectivity for the AI era. With expertise across fixed, mobile and transport networks, powered by the innovation of Nokia Bell Labs, we're advancing connectivity to secure a brighter world. Learn more about life at Nokia.

Our recruitment process

We act inclusively and respect the uniqueness of people. Our employment decisions are made regardless of race, color, national or ethnic origin, religion, gender, sexual orientation, gender identity or expression, age, marital status, disability, protected veteran status or other characteristics protected by law. We are committed to a culture of inclusion built upon our core value of respect. The length of the recruitment process may vary depending on the specific role's requirements. We strive to ensure a smooth and inclusive experience for all candidates.

About The Team

Some of our benefits in France :

• Flexible working arrangements to support work-life balance
• A minimum of 90 days of Maternity and Paternity Leave, with the option to return to work within a year following the birth or adoption of a child (based on eligibility)
• Medical insurance plan and accident insurance to protect your health and well-being
• Pension plan, Time Saving Account, and Employee Saving Plan to support long-term financial security
• Transportation reimbursement
• Company car based on eligibility
• Well-being programs to support your mental and physical health
• Opportunities to engage with Nokia Employee Resource Groups (NERGs), as well as access to mentors, coaches, and Employee Growth Solutions
• A learning culture that promotes continuous personal and professional growth - for your role and beyond