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  • Received: Apr. 3, 2020

    Accepted: Jul. 10, 2020

    Posted: Jul. 22, 2020

    Published Online: Sep. 3, 2020

    The Author Email: Christophe Couteau (, Sylvain Blaize (

    DOI: 10.1364/PRJ.392706

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    Xiaolun Xu, Aurélie Broussier, Tiziana Ritacco, Mackrine Nahra, Fabien Geoffray, Ali Issa, Safi Jradi, Renaud Bachelot, Christophe Couteau, Sylvain Blaize. Towards the integration of nanoemitters by direct laser writing on optical glass waveguides[J]. Photonics Research, 2020, 8(9): 09001541

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Photonics Research, Vol. 8, Issue 9, 09001541 (2020)

Towards the integration of nanoemitters by direct laser writing on optical glass waveguides

Xiaolun Xu1, Aurélie Broussier1, Tiziana Ritacco1, Mackrine Nahra1, Fabien Geoffray2, Ali Issa1, Safi Jradi1, Renaud Bachelot1,3,4, Christophe Couteau1,5,*, and Sylvain Blaize1,6,*

Author Affiliations

  • 1Light, nanomaterials, nanotechnologies (L2n), ERL 7004, CNRS. University of Technology of Troyes, 12 rue Marie Curie, 10004 Troyes Cedex, France
  • 2Teem Photonics, 61 Chemin du Vieux Chêne, 38246 Meylan, France
  • 3Key Laboratory of Advanced Display and System Application, Ministry of Education, School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China
  • 4Sino-European School of Technology, Shanghai University, Shanghai 200044, China
  • 5e-mail:
  • 6e-mail:


A major challenge towards nanophotonics is the integration of nanoemitters on optical chips. Combining the optical properties of nanoemitters with the benefits of integration and scalability of integrated optics is still a major issue to overcome. In this work, we demonstrate the integration of nanoemitters positioned in a controlled manner onto a substrate and onto an optical ion-exchanged glass waveguide via direct laser writing based on two-photon polymerization. Our nanoemitters are colloidal CdSe/ZnS quantum dots (QDs) embedded in polymeric nanostructures. By varying the laser parameters during the patterning process, we make size-controlled QD-polymer nanostructures that were systematically characterized using optical and structural methods. Structures as small as 17 nm in height were fabricated. The well-controlled QD-polymer nanostructure systems were then successfully integrated onto a new photonic platform for nanophotonics made of an ion-exchanged waveguide. We show that our QDs maintain their light emitting quality after integration as verified by photoluminescence (PL) measurements. Ultimately, QD emission coupled to our waveguides is detected through a home-built fiber-edge coupling PL measurement setup. Our results show the potential for future integration of nanoemitters onto complex photonic chips.

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