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FP7 / PEOPLE /
Marie Curie
Actions
PROPHET - ITN (FP7-PEOPLE-2010-ITN)
Grant Agreement no. 264687
Postgraduate Research on Photonics as an Enabling Technology
Job title: Quantum Dot based mode locked lasers for optical frequency combs

Job summary PROPHET (Postgraduate Research on Photonics as an Enabling
Technology -
www.prophet-itn.eu ) is a Marie Curie Initial Training Network funded by
the EU FP7. Within PROPHET, the CNRS Laboratory for Photonics and
Nanostructures (LPN) has a vacancy for an Early Stage Researcher (ESR)
funded for a period of 36 months, in collaboration with the Institut
Telecom Sud Paris. The ESR will be admitted to the University of Paris 6,
to pursue a PhD thesis.
The ESR based at LPN will be responsible for the development of novel
sources for access networks based on QD active materials for two
applications, namely fibre to the home (FTTH) and radio over fibre.



Description of research.

After the burst of the internet bubble, the optical communication and
component industries are in a process of consolidation and cost reduction.
The drastic increase of the internet traffic requires the development of
high bandwidth high bit rate optical networks. Strategic stakes in
particular imply the ability to achieve low cost and small foot print
optical components while simultaneously enhancing their performances.
For the last decade, Quantum Dot (QD) based lasers and devices have been
the subject of considerable interest owing to expected unique properties
that result from the 3 D confinement of charge carriers. Enhanced non-
linear effects have also allowed the generation of subpicosecond pulses in
single section InAs/InP QD mode locked lasers.
The ESR/PhD student will focus his/her research activity on the
optimization of mode locked lasers emitting in the 1.55 µm window for
frequency comb generation compatible with the ITU grid. Engineering of QD
nanostructures and growth optimisation will be carried out to achieve wide
optical bandwidth of the emission spectrum of QD based mode-locked lasers.
She/he will investigate InAs/InP based lasers for 1.55 µm emission and
implementation of comb generation using mode-locked lasers for modulation
at 10 Gb/s per channel, with 100 GHz channel spacing for the C wavelength
window. Radio-over-fiber activities will include indoor applications where
low noise 60 GHz radio signals will be generated using QD mode locked
lasers.

This implies design and fabrication of single mode devices and their full
assessment including temporal and phase properties, noise
characteristics,.followed by 10 Gbit/s transmission in collaboration with
PROPHET partners. These devices will also be used for the generation of low
noise 60 GHz radio signals for radio-over-fiber applications.

The PhD student will pursue the project activity within the LPN PHOTEL
Group and IT SudParis EPH Department and will interact with researchers
working in several areas in semiconductor physics, nanophotonics and
optical communications. Within the PROPHET network, collaboration is
planned with several partners including III-VLab (Marcoussis) for laser
structure optimization, TU Berlin for temporal and noise properties
characterization, and data transmission at high bit rate, and U2T Photonics
AG to learn about packaging and data transmission.

The PhD student is expected to pursue his/her own career plan and
professional growth in the
spirit of Marie Curie actions.



Qualifications Master degree or equivalent (usually 3+2 years) in Physics
or related areas:
Photonics, Materials Science, Electronic Engineering or similar.
The academic degree should formally entitle the candidate to start a
doctorate in France or in the country of origin.

Marie Curie rules
ITN PROPHET is managed under 2010 Work Programme for Marie Curie
Actions, which is available on the Cordis web site:
http://cordis.europa.eu/fp7/mariecurieactions/library_en.html
Please refer to the 2010 Work Programme for precise statements about
transnational mobility and eligibility rules, salary, allowances, career
plan, etc.

Eligibility Applicants can be of any nationality (European or non-
European), but they are
required to satisfy the eligibility criteria for Marie Curie Early Stage
Researchers:
- Must be within the first four years (full-time equivalent) of their
research
career, i.e., measured from the date when they obtained the degree which
formally entitles them to start a doctorate.
- Must not have resided or carried out their main activity (work, studies,
etc) in France for more than 12 months in the 3 years immediately prior to
the recruitment.
The eligibility criteria must be fulfilled at the deadline for
applications, which is fixed at May 30th, 2011.

Salary: ~EUR 42 388 /year, full cost including taxes and social charges.
Mobility, travel and career exploratory allowances will be added, depending
upon country of origin and family situation of ESR, according to EU
regulations.

Starting date Envisaged starting date is September 2011

How to apply : Applicants should send a CV and letter of motivation to:
Dr Abderrahim Ramdane: abderrahim.ramdane@lpn.cnrs.fr
Prof Badr-Eddine Benkelfat: badr-eddine.benkelfat@it-sudparis.eu

Deadline for receiving applications: 15th June 2011
Website for more job details: www.prophet-itn.eu