Arbejde PhD scholarship in Highly Efficient On-Chip Frequency Comb Generation Hovedstaden Danmarks Tekniske Universitet - jobtilbud

GÆLDER
stillingsbetegnelse:
PhD scholarship in Highly Efficient On-Chip Frequency Comb Generation

jobbeskrivelse:
Generation of coherent light pulses for precision measurements and high-speed optical communication is a central topic of modern optical research. By combining the strong non-linear coupling of light and matter with micro-structures on a chip platform one can generate equally spaced coherent optical frequencies. DTU Fotonik works with all areas of photonic engineering, including a strong focus on optical communications. Within the newly established center of excellence Silicon Photonics for Optical Communications (SPOC) funded by the Danish National Research Foundation, we are now seeking a new PhD student in integrated nonlinear photonics. Preferred starting date to be 1st of November or as soon as possible. Optical frequency combs, as explored extensively by J. L. Hall and T. W. Hänsch (for which they were awarded the Nobel Prize in 2005), play a significant role in many different fields of science including precision metrology, spectroscopy, astronomy, microwave photonics and telecommunication. In 2007 a new frequency comb generation mechanism, based-on nonlinear parametric frequency conversion in micro-resonators (see figure), was proposed. In contrast to the conventional laser-based frequency comb, the micro-resonator is very compact and can be integrated on a chip. In the past five years, various integrated nonlinear material platforms have been used for on-chip frequency comb generation, such as SiN planar rings and silica toroids. Recently, we have developed an ultra-efficient nonlinear integrated platform AlGaAs-on-insulator (AlGaAsOI) for on-chip frequency comb generation (M. Pu et al., CLEO 2015 postdeadline paper JTh5A.9). The goal of this project is to design and characterize the micro-resonator-based frequency combs and finally implement them in an ultra-fast telecommunication system (beyond Terabit/s) as a multi-wavelength and ultra-short pulse source. Project description The successful applicant will participate in a team of 1 postdoc and 2 PhD students working specifically on the frequency comb project, in addition to the participating senior staff. The PhD student will specifically be in charge of the modelling of micro-resonator-based kerr frequency comb generation and the development of a stable frequency comb generator for ultrafast telecommunication systems. The student is thus expected to: •Design ultra-high quality factor micro-resonators with engineered dispersion properties for integrated nonlinear platforms incl. AlGaAsOI and SiN; •Develop a simulation tool for modelling of frequency comb generation in micro-ring resonators; •Characterize the micro-resonators fabricated at DTU (for AlGaAsOI) and in foundries (for SiN); •Characterize the frequency comb concerning phase noise and coherence; •Take part in building an efficient experimental set-up for low-phase noise frequency comb generation (soliton frequency comb); •Investigate the phase noise mechanism in different integrated nonlinear platforms; The PhD student also has the opportunity to have a longer stay with our international collaborators within the SPOC centre of excellence incl. Univ. of California Santa Barbara, Ghent University, Univ. of Sydney, and others. Qualifications Candidates should have a master's degree in engineering or a similar degree with an academic level equivalent to the master's degree in engineering.Good communication skills in written and spoken English are a must. Approval and Enrolment The scholarships for the PhD degree are subject to academic approval, and the candidates will be enrolled in one of the general degree programmes of DTU. Only candidates with an above the average marks are accepted in the program. For information about the general requirements for enrolment and the general planning of the scholarship studies, please see the DTU PhD Guide. Assessment The assessment of the applicants will be made by Centre leader Leif Katsuo Oxenløwe, Prof. Jan W. Thomsen, Prof. Karsten Rottwitt, Ass

Arbejdsgiver Navn: Danmarks Tekniske Universitet

Arbejdsgiver telefonnummer: 45252525

Arbejdsgiver faxnummer: 45881799

Job kort beskrivelse:
Undervisning og forskning på universiteter og højere læreranstalter

land: Danmark

region: Hovedstaden

krævede uddannelse: Ikke angivet

Kilde til jobtilbud: AMS, Offentlige arbejdsformidlinger, Danmark

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