Early Stage Researcher - Wideband Optical Network at Infinera Corporation

Role: Early Stage Researcher

Duration: 3 Years

Location: Carnaxide, Portugal & secondments in Italy & Germany


  • Currently based outside of Portugal, Internationally mobile. Not resident in Portugal for minimum of the last 12 months.
  • MSc in Communications / Telecoms / Hardware Engineering
  • Recent graduate or limited work/Research experience (<4yrs)
  • Open to pursing a PhD
  • Interest in a Research Project


Infinera is an industry-leading supplier of intelligent transport network solutions that provide the resilient foundation for the largest and most demanding Tier 1 carrier, cable operator, internet content provider (ICP), and enterprise networks worldwide. With a distinguished heritage of optical networking innovation and more than 2000 patents, Infinera’s end-to-end, multi-layer packet optical solutions enable network operators to scale network bandwidth on-demand, accelerate service provisioning, and automate operational tasks. Infinera solutions are built upon leadership in vertical integration, superior optical performance, and a unique Instant Bandwidth operational model that enable the lowest total cost of ownership and a rich end-user experience, www.infinera.com.



A three-year research training position is open at Infinera in Lisbon, Portugal as part of the European Training Network WON (Wideband Optical Networks, H2020-MSCA-ETN).

WON will train 14 early-stage researchers (ESRs) in the area of wideband optical networks through collaboration of academic and industrial highly qualified institutions. WON will cover three main areas: a) network management and control plane algorithms; b) design, prototyping and test of transceiver and in-line components; and c) digital signal processing techniques and system modelling.

The WON ESRs will be trained within the fairly unexploited area of wideband optical networks through the synergy of 14 highly qualified academic and industrial institutions. The WON trained ESRs will benefit of a holistic approach to the multiband and open optical networks, starting from the physical layer up to network planning, engineering and orchestration.

The ESR that joins Infinera Portugal will be trained by the members of the WON consortium, and is motivated to pursue a Ph.D. degree on a topic related to the optimized impairment aware design of wideband optical networks.

This ESR has four primary goals: 1) to develop/collaborate in the development of a simplified performance evaluation model valid for wideband transmission systems; 2) to integrate the performance evaluation model in a routing, modulation format and spectrum assignment planning tool; 3) to evaluate the potential opportunities resulting from transmission over bands with different optical performance; 4) to perform techno-economic analysis comparing the potential of wideband transmission with existing alternatives.

The ESR will be taught on the fundamentals of optical fiber transmission systems, namely on the evaluation of optical performance and design of optical networks based on coherent-detection modulation formats. The researcher will be trained on the main limitations arising in wideband optical systems and their modelling in a planning tool as well as on the strategies that enable mitigating the impact of those limitations on the total system capacity. While training and research will take place for the majority of time at the premises of Infinera in Lisbon, two secondments, each of four months, are planned at Politecnico di Torino (Torino, Italy) and at Infinera, Germany (Munich, Germany).

Infinera is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, religion, color, national origin, sex, age, status as a protected veteran, or status as a qualified individual with disability. EEO Employer/Vet/Disabled.