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INTERconnects enhanced by colloidal qDOT based optical amplifiers

Total Cost €


EC-Contrib. €






 INTERDOT project word cloud

Explore the words cloud of the INTERDOT project. It provides you a very rough idea of what is the project "INTERDOT" about.

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Project "INTERDOT" data sheet

The following table provides information about the project.


Organization address
city: GENT
postcode: 9000

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Belgium [BE]
 Total cost 145˙000 €
 EC max contribution 145˙000 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2014-PoC
 Funding Scheme ERC-POC
 Starting year 2015
 Duration (year-month-day) from 2015-04-01   to  2016-09-30


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITEIT GENT BE (GENT) coordinator 145˙000.00


 Project objective

In the ERC project ULPICC, a new type of optical amplifier was invented that is much more compact than existing optical amplifiers based on rare earth doping and much cheaper to fabricate than the ones based on III-V semiconductors. It is based on our discovery that HgTe colloidal quantum dots (QDs) exhibit a gain threshold several orders of magnitude lower than any other type of QDs studied before. Semiconductor QDs are fabricated using wet chemical synthesis procedures and can be deposited with cheap solution-based techniques such as printing which makes them competitive with traditional gain host media, with the additional advantage that the gain peak wavelength of colloidal QDs can be set freely by controlling the size of the QD, making them extremely versatile. An application (considered by big industrial players such as INTEL, IBM, NTT, …) particularly suffering from the lack of a compact optical amplifier is that of optical interconnects (OI) between chips to accommodate increasing data-transfer rates elusive for electronics. The OI market is expected to grow to $1 billion by 2021, where we expect the amplifier function can be valued anywhere up to 10% of the total OI value ! A heavily investigated approach to realize such an OI is that of ‘silicon photonics’, which has been shown to fulfil the requirements in terms of bandwidth and power consumption but lacks a native optical gain medium required to compensate the OI intrinsic losses. Therefore, the objective of INTERDOT is to assess the technical and commercial potential of optical amplifiers based on colloidal HgTe QDs, integrated on silicon photonics chips or in board-level OIs. We will validate their gain, specify their efficiency, initiate reliability and performance testing (through close industrial collaboration) and investigate how the knowhow involved can be protected and commercialized, either through licensing and/or spin-off creation.


year authors and title journal last update
List of publications.
2016 W. Xie, Y. Zhu, T. Aubert, Z. Hens, E. Brainis, D. Van Thourhout
Integration of silicon nitride photonics with nanoscale materials: from passive to active photonics ICs (invited)
published pages: , ISSN: , DOI:
The International Symposium on Optoelectronic Technology and Application 9-11 May 2016 2019-07-23
2015 P. Geiregat, A.J. Houtepen, F.C. Grozema, D. Van Thourhout, Z. Hens
Picosecond all-optical wavelength conversion using hot carrier intraband absorption in colloidal PbS nanocrystals
published pages: , ISSN: , DOI:
The 2015 E-MRS Spring Meeting 11-15 May 2015 2019-07-23
2016 D. Van Thourhout, Z. Wang, B. Tian, Y. Shi, M. Pantouvaki, C. Merckling, Y. Hu, I. Asselberghs, S. Brems, L. Abdolahi, C. Alessandri, J.P. George, J. Beeckman, H. Min-Hsiang, P. Absil, J. Van Campenhout
New materials for multifunctional photonics Ics
published pages: , ISSN: , DOI:
Conference Espanola de Nanofotonica (CEN 2016) 20-22 June 2016 2019-07-23
2016 D. Van Thourhout
InP-on-Silicon Integration Through Waferbonding and Epitaxy + Integration of Si and SiN PICs with New Active Materials (invited)
published pages: , ISSN: , DOI:
International School of Photonics 25 September - 1 October 2016 2019-07-23
2015 P. Geiregat, A. Houtepen, D. Van Thourhout, Z. Hens
Picosecond all-optical wavelength conversion using hot carrier intraband absorption in colloidal PbS nanocrystals
published pages: paper WW4.04, ISSN: , DOI:
2015 MRS Spring meeting 6-10 April 2015 2019-07-23

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