| Evaluation Results |
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Project: PTDC/EEI-TEL/2674/2012
Title: COOC - Osciladores caóticos
para comunicações Ópticas |
| FCT’s decision (Artigo 11º
do Regulamento) |
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Not Recommended for Funding
In face of high competition for funding, this proposal did not reach a position
to be funded. |
| Evaluation Panel Statement and Rating |
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Criterion A - Scientific
merit and innovative nature of the project from an international standpoint,
including but not limited to: i) Relevance and originality of the project
proposed (based on the state-of-the art in a determined scientific area
and previous work done by the proposing team); ii) Methodology adopted for
carrying out the project; iii) Expected results and their contribution to
scientific and technological knowledge; iv) Resulting publications and articles;
v) Contribution towards promoting and disseminating science and technology;
vi) Production of knowledge that can be incorporated into and applied to
the business sector.
- Rating: Excellent
- Comments:
To make chaotic laser sources for various applications including chaotic
secure communications, a technique of the current modulation for a laser
diode is frequently used. However, it is not easy to make efficient and
fully chaotic laser sources by a simply modulation such as using a sinusoidal
signal. On the other hand, a laser diode (LD) modulated through a resonant
tunneling diode (RTD), which is originally proposed by the applicant and
his colleague, can provide high-speed and efficient chaotic light sources.
On top of that, we can expect very compact integrated chaotic light sources
suitable for communication applications. The idea is new and the fruitful
results would be expected by the proposed project.
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Criterion B - Scientific
merit of the research team, including but not limited to: i) scientific
productivity of the team (ranging from references to publications and citations
in published works as used by the basic and engineering sciences, to performance
and artistic work in the arts or monographs and books in the humanities
and social sciences); ii) Abilities and skills to adequately execute the
proposed project (team configuration, Principal Investigator’s qualifications);
iii) Ability to involve young researchers in training; iv) Availability
of the team and non duplication of objectives in relation to other projects
underway; v) The degree of internationalization of the team; vi) Degree
of success in previous projects in relation to the Principal Investigator
(PI) (in the case of young PIs, this requirement must be assessed based
on the potential revealed by the PIs curriculum vitae in the absence of
prior concrete accomplishments); vii) Level of commitment of any companies
participating in the project (if applicable).
- Rating: Outstanding
- Comments:
A light source using laser diode modulating through a resonant tunneling
diode has proposed by the applicant and his colleague and the prototype
has already been fabricated. The previous results have been published in
several notable journals and the performance and usefulness of the device
have been proved. In the past papers related to this subject, graduate students
wrote some of them as first authors and, thus, the good trained young researchers
have been involved in this project.
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Criterion C - Feasibility
of the plan of work and reasonableness of the budget, including but not
limited to: i) organization of the project in terms of the proposed objectives
and resources (duration, equipment, size of the team, institutional and
management resources); ii) institutional resources of the participating
entities, in particular of the Principal Contractor (PC) (technical-scientific,
organizational and managerial and, when appropriate, co-funding capacity
on the part of companies).
- Rating: Excellent
- Comments:
The project is the application of the new chaotic light source of RTD-LD
to chaotic secure communications and it is appreciated as a highly motivated
one in this field as a demonstration of novel secure communication systems.
As for the success of efficient chaotic communication systems, the key issues
are the quality of the light sources for chaotic generations and the robustness
of chaos synchronization using the devices. We can expect fruitful results
since they have already shown the capability of high dimensional chaotic
light sources using RTD-LD. However, the Panel would like to point out the
study of the quality of chaotic light sources such as chaos dimension and
Lypunov exponent of the light outputs for further investigation. The Panel
thinks that the project is elaborately prepared and the budget is quite
reasonable. The proposal for human resources is proper.
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Criterion D - Contribution
to the body of knowledge in this field and improvement of competence of
the scientific community in general, including but not limited to: i) Contribution
to the body of knowledge and competence of the National Science and Technology
System (expected effects and results).
- Rating: Very Good
- Comments:
A new integrated chaotic light source based on RTD-LD for applications will
be established. The demonstration of it for chaotic secure communications
would fairly impact on the development of the systems of chaotic communications.
The development of directly modulated integrate chaotic sources to the injection
current of a laser diode is very new and the result would be of great contribution
to the research in this field if succeeded.
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Overall
Rating: Excellent
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Overall
Comments: A new integrated chaotic light source is developed,
which is suitable for an application to chaotic secure communications. The
Panel thinks that the proposed project is quite reasonable, however we would
like to point out some subjects for further investigation of the successful
development of the device and the system. The first is the investigation
for the quality of chaotic signals from RTD-LD. The quality such as irregularity
of the signals (for example, the dimensions of chaotic signals) would be
helpful to demonstrate the appropriateness of them to chaotic secure communications.
The second is the comparisons of the quality of existing chaotic signals
from those induced by optical feedback, optical injection, and optoelectronic
feedback in laser diodes. The compatibility or superiority of the signals
compared with those conventional ones would be interesting. The third is
the possibility of another applications of the light source. For example,
higher irregularity of chaotic signals is expected for the application of
physical random number generation. If the suitability for such application
were demonstrated, the proposed chaotic light source would be of great importance
in applications in this field.
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