Researcher – CMOS based analog and mixed-signal integrated circuits for >100Gbaud optical transce

Gent - Research & development
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About a week ago

The Design group of IDLab, Ghent University and imec is seeking a postdoctoral researcher to join its newly established High-Speed and Coherent Transceiver Research Programs. The researcher's responsibilities covers integrated circuit design using scaled (e.g. FinFET) CMOS processes, targeting building blocks such as >100Gbaud capable clock-and-data recovery circuits, broadband driver and amplifier circuits, front-end parts for high-speed ADCs.

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Researcher – CMOS based analog and mixed-signal integrated circuits for >100Gbaud optical transceivers

What you will do

Optical transceivers with capacities as high as 100G and even 400G are now widely used inside data centers to connect servers arranged in racks with high-capacity switches. Such bandwidths are realized through space or wavelength division multiplexing, combined with multilevel modulation (e.g. 400G using 4x 50Gbaud PAM-4). New software applications such as artificial intelligence (AI) continues the drive for ever more powerful data centers, which in turn drives the need for higher capacity optical links. Industry is now seriously considering 800G and even >1Terabit optical transceivers for these applications. The initial approach of adding more channels is usually not cost-effective, and hence research is now focusing on realization of optical transceivers using >100Gbaud opto-electronics. Such baudrates will require a new generation of underlying electronic building blocks implemented using scaled CMOS. The group is therefore seeking a postdoctoral researcher with following responsibilities:

  • Development, realization and test of analog and/or mixed-signal integrated circuits using a deeply scaled CMOS (e.g. FinFET or FDSOI) process, including but not limited to for example:
    • Broadband variable gain amplifiers, continuous-time linear equalizers, matched IO circuits,
    • Track-and-hold circuits, high-speed custom-designed latches, (de-)multiplexers, clock generator circuitry such as phase interpolators, dividers, 
    • Broadband modulator driver or transimpedance amplifier front-ends, 
    • Supporting circuitry such as operational amplifiers, voltage or current references where needs arise.
  • Perform or support the measurements required to evaluate the performance of the fabricated integrated circuits. If required this may include the realization of required supporting material such as high-speed capable printed circuit boards, ceramic, interposers etc.

What we do for you

The successful candidate will join an internationally renowned team of high-speed electronic integrated circuit designers. He or she will get the opportunity to realize and shape the Design group’s roadmaps towards next-generation optical transceivers with >100Gbaud symbol rates. The successful candidate will be provided every opportunity to publish the outcomes of their research work at high-impact international conferences and leading journals, both in the area of IC design as well as optical fiber conferences.
This position is available for a definite duration of two years initially, and can be extended pending funding applications.

Who you are

  • A PhD degree in Electrical Engineering or equivalent with a strong background in realization of high-performance and high-speed analog integrated circuits,
  • Proven track record of successfully tested integrated circuits such as high-speed logic blocks, broadband amplifiers, equalizers, multiplexers etc, preferably using FinFET or FDSOI processes,
  • Proficiency with design tools such as Cadence, Mentor Graphics, electromagnetic simulators, parasitic extraction and verification tools is a must,
  • Experience with advanced measurement equipment such as high-speed real-time or sampling oscilloscopes, vector network analyzers, spectrum analyzers, pattern generators or error detectors,
  • You integrate well into a multi-cultured and diverse team, and are a teamplayer,
  • You are allowed to work in Belgium.
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