TC20 : Photonic glasses and optical fibers

TC20 focuses on glasses finding their application in optoelectronics and photonics. All the aspects of research & development are considered, going from design and fundamental properties to characterization and applications. In the recent years much attention has been devoted to new materials (glasses and glass-ceramics) for Lighting and Solar Energy. TC20 promotes international collaborations and sponsors international Workshops and Conferences relevant to the field.

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The participants at the 2016 TC20 Committee Meeting in Kyoto, during CerSJ-GOMD Joint Symposium (fro

PRE'19, the 8th Intl. Workshop on Photoluminescence in Rare Earths and flag event of TC20, was held in Nice, France, in September 2019. Once again, the scientific level was excellent, and the meeting saw the participation of numberous worldwide scientists.

At PRE'19, 4 prizes and 2 certificates were awarded to the best young presenters.

At PRE'19, 4 prizes and 2 certificates were awarded to the best young presenters of oral and poster communications. The money prizes were offered by ICG through TC20, the certificates and the accompanying books were offered by

The winners were: (oral) 1st Prize: Jonas JOOS - U. Ghent, Belgium; 2nd Prize: Jorel FOURMONT - U. Angers, France.  (poster) 1st Prize: Aleksandra PILCH-WRÓBEL, PAS Wroclaw, Poland; 2nd Prize: Daniel AVRAM, National Institute for Laser, Plasma and Radiation Physics, Romania.  Congratulations of the Jury to: Kacper PROKOP, U. Wroclaw, Poland; Cesare MERONI, CNRS ENSICAEN, France.

The awards were delivered during the final session of TC20 by Wilfried Blanc, lead chair of PRE'19, and Giancarlo C. Righini, TC20 chair.

TC20 meeting in Yokohama during the ICG 2018 Congress. Front row, from left: Marcelo Nalin, Yuki Kondo, Long Zhang; standing, from left: Hong Li (TC28, vice chair), Daniel Neuville (TC03, chair), Kathleen Richardson, Joaquin Fernandez, Giancarlo Righini, Setsuhisa Tanabe, Rolindes Balda, Maurizio Ferrari, Yuanzheng Yue (TC28, chair), Shibin Jiang.

TC20 members Animesh Jha, Kathleen Richardson, Marcelo Nalin, Setsuhisa Tanabe and Heike Ebendorff-H

TC20 members Animesh Jha, Kathleen Richardson, Marcelo Nalin, Setsuhisa Tanabe and Heike Ebendorff-Heidepriem at ISNOG 2018 in Québec City, June 2018.



TC20 Mission

The main goal of TC20 is to keep monitoring the international trends in optoelectronic/photonic glasses and to contribute to the advances of scientific knowledge and information in this area. Outreach, addressed to students and general public, will be an important part of the Committee's activity. The global aim is to maintain the centrality of glass in the next generations’ photonic devices; particular attention is therefore devoted to advanced and novel materials, such as glass ceramics, hybrid glasses, nanostructured glasses, and to fundamental components, such as optical fibres and glass integrated optical circuits.

TC20's research activities are also very much concerned with materials for “Green Photonics”.

In the next years the following topics are anticipated as of particular interest:

Glass ceramic phosphors and new materials for Solid-State Lighting

Persistent phosphors

New glasses and fibers for fiber lasers and nonlinear optics

New materials and process for infrared imaging and sensing

Optical computing becoming more practical based on new materials

New materials and films for Solar Cells

Ultrathin glasses for Flexible Photonics.  



Following a request from the CTC (Coordinating Technical Committee) of ICG, a short video presenting the mission and main activities of TC20 was made available at the ICG2019 Congress in Boston. It is now available on YouTube, too.



2018/2019 Activity - a short report

The focus of 2018 activity was the ICG Annual Congress in Yokohama, Japan (23-26 September 2018), where Setsuhisa Tanabe and Giancarlo Righini organized a topical section on "Glasses for 21st century photonic technologies". Several TC20 members actively participated to the topical section, which saw, inside 6 parallel sessions during the three Congress days, a total of 33 oral presentations (11 invited).  A meeting of the TC20 Committee was also held during the ICG Congress in Yokohama, with a large participation (10 members were present).  It was agreed to devote more attention to outreach activities, also to illustrate the mission of ICG and TC20. To increase the knowledge of the properties and potentialities of the glasses for optoelectronics, it was also agreed to collect from TC20 members a few scientific articles already published in open access format, and to present them in the website. Such a “store of knowledge” could be useful to provide an updated overview of some recent advances in our research field. 

Among other issues, Righini reported on the successful organization of PRE'17  and on the progressing organization of PRE'19, to be held in Nice, France, 4-6 September 2019. The 7th International Workshop on Photoluminescence in Rare Earths: Photonic Materials and Devices (PRE'17) was held in Rome, Italy, in November 2017 ( There were 140 participants from 28 countries; the technical program included 2 plenary lectures, 14 invited lectures, 61 oral communications and 60 poster presentations. Several TC20 members attended the workshop and contributed to its high scientific level.  

Besides the usual business, the agenda of the TC20 meeting included the discussion of the possibility of common activities with TC03 "Glass Structure" and TC28 “Glass fibres for reinforcement and insulation”. Daniel Neuville (TC03, chair), Yuanzheng Yue (TC28, chair) and Hong Li (TC28, vice chair) attended the second part of the meeting; it was agreed that a couple of TC20 members (Ferrari, Nalin) could send samples and information to the TC03 and TC28 colleagues for further characterization and analysis. A photo of the participants in the Committee meeting is shown above.

A few Committee members had also met in Québec City [see a photo below]. during the 21st International Symposium on Non-Oxide and New Optical Glasses (ISNOG), 17-21 June 2018, where they were delivering invited talks and a keynote lecture (S. Tanabe).

At the end of 2018, TC20 received the applications of two new members, namely Dr. Xin Jiang, Max Planck Institute for the Science of Light, Erlangen, Germany and Prof. Yong Gyu Choi, Korea Aerospace University, Korea. After evaluation of their curricula, TC20 expressed full agreement and congratulated with the two new members.

During 2018, many other activities were carried out by TC20 members; in the following we mention some of them.

Special Publications (2018-2019)

  • L. Petit and D. Dorosz were guest editors, together with Wilfried Blanc (TC28), of a special issue of Applied Sciences on “Rare-Earth Doping for Optical Applications . The issue (closed on 31 August 2018) contains 8 research articles.  
  • S. Jiang and S. Taccheo were guest editors, together with B. Boulanger, S. Mirov, J. Nilsson, A. Petersen, F. Rotermund and T. Taira, of a Virtual Feature Issue of Optical Materials Express on “ Advanced Solid-State Lasers 2017 , collecting 31 articles.
  • G. C. Righini was guest editor, together with N. Righini, of a special issue of Micromachines on “Glassy Materials Based Microdevices . The issue (closed 1 July 2019) contains 21 articles. A free e-book was also arranged, and a paperback book is available, too (
  • M. Ferrari is guest editor, together with F. Prudenzano and A. D’Orazio, of a special issue of Applied Sciences on “Advances on Dielectric Photonic Devices and Systems Beyond Visible . The deadline is 15 December 2019, and so far 4 articles have been published.
  • A Virtual Feature Issue of the open-access Optical Materials Express on Mid-Infrared Materials and their Device Applications was published in 2018, containing 24 articles. L. Petit was guest editor, jointly with Juejun Hu, Luke Mawst, Steven Moss, and David Ting. 

Collaborative Research Projects

Some TC20 members keep participating in the European Action COST MP1401 “Advanced fibre laser and coherent source as tools for society, manufacturing and life science”. S. Taccheo is chair of the action, and L. Petit is Management Committee (MC) member; J.-L. Adam and D. Dorosz are MC substitutes.

M. Ferrari was participating in the European project RECOLA (Recovery of lanthanides), which proposes the development of methodologies for extracting rare earth (and other metals) from e-waste to enable efficient waste management and the reintroduction of the economy of secondary raw materials. RECOLA also involves groups from Argentina, Brazil and Peru. 

Organization or Scientific Managing of Conferences

  • S. Jiang, TC20 vice-chair, was the chair or co-chair of three conferences in 2018: - SPIE’s Optical Components and Materials at Photonics West in San Francisco, USA;  - OSA’s Advanced Solid-State Lasers in Boston, USA; - Photonics Asia’s Advanced Sensor Systems and Applications in Beijing, China.
  • M. Nalin was co-chair of the International Conference on Optical Optoelectronic and Photonic Materials and Applications – ICOOPMA2018, Maresias-SP, Brasil (August 26 - 31, 2018).
  • M. Ferrari was co-chair of the 1st International Conference on Advances on Dielectric Photonic Devices and Systems Beyond Visible [D-Photon] (Bari, October 1-2, 2018).
  • C. Falcony was member of the international committee, IX International Congress of Physics Engineering, Mexico City (November 5 – 9, 2018).

Other News and Awards

In May 2018, two TC20 members received awards from ACerS and gave magistral lectures at GOMD meeting in San Antonio, TX , USA: S. Tanabe (Kyoto University) received the Varshneya Frontiers of Glass Science Award and X.-H. Zhang (Rennes University) received the Varshneya Frontiers of Glass Technology Award. 

G. C. Righini was honorary chair of the D-Photon Conference in Bari, Italy, on October 2018.

At the end of October, 2018, OSA The Optical Society announced the 2019 Fellows class. TC20 congratulates Animesh Jha for this recognition.



2019/2020 Activities


As customary, the primary goal of TC20 members is to effectively contribute to the 2019 international events most relevant for this committee, and in the first place to the 25th ICG Congress, held in Boston, Mass., June 9-14, 2019, hosted by ACerS Glass & Optical Materials Division, and to the 8th Intl. Workshop on Photoluminescence in Rare Earths (PRE’19), held in Nice (France) on 4-6 September 2019.

25th ICG Congress.    At the 25th International Congress on Glass, held in Boston, TC20 organized the Session 10 of the Symposium IV (Emerging Applications of Glass) on "Glass Materials and Devices for Photonic Systems". S. Jiang and G.C. Righini coordinated this Session.    

NASSPM.      The 1st North American Summer School on Photonic Materials (NASSPM), supported by the International Commission on Glass (ICG), was held June 16 – 21, 2019, immediately following the 2019 ICG Congress in Boston. Kathleen Richardson and Alicia Duran (ICG President) were influential members of the Organizing Committee.  ICG, through TC20, supported NASSPM by funding a grant that allowed a postdoc (dr. Lidia Zur) to attend the School.

ICTON 2019.  The 21st  International Conference on Transparent Optical Networks (ICTON 2019,) was held in Angers (France) on 9-13 July 2019. Several TC20 members participated with invited presentations (Jean-Luc Adam, Rolindes Balda, Wilfried Blanc, Maurizio Ferrari, Laeticia Petit, Stefano Taccheo, and others)

PRE'19.    The 8th International Workshop on "Photoluminescence of Rare Earths: Photonic Materials and Devices" will be held in Nice (France) on 4-6 September 2019. The co-chairs were W. Blanc, P. Dorenbos, F. Vetrone, whereas G. C. Righini was the honorary chair, M. Ferrari was the TC20 representative in the Local Organizing Committee. One of the photos above shows some of the winners of the money prizes funded by ICG through TC20 and of the recogniition certificates given to the best young presenters.

WSOF 2019.   Among the activities planned in the second part of 2019, one can mention WSOF 2019, the 6th Workshop on Specialty Optical Fibers and Their Applications, that will be organized by L. Dong and J. Ballato in Charleston, SC, 6-8 November 2019.

Members of TC20 are also expected to actively participate in numerous conferences worldwide as chairs, program committee members, and invited presenters.

2020 Conferences

A preliminary list of Conferences of interest for TC20 members in 2020:



Inter-TCs Collaboration: Following the contacts had with TC03 "Glass Structure" and TC28 “Glass fibres for reinforcement and insulation”, TC20 will aim at defining a joint plan to carry out common activities. 


Journals' Special Issues and other publications in 2019/2020:  

The year 2019 will see the publication of some Special Issues on glass-related topics of international peer-reviewed journals, having some TC20 Committee members as Guest Editors. Besides the SIs already mentioned among the 2018 activities, more SIs will be completed during 2019 or 2020:

  • A Special Issue of the journal Optical Materials  (IF=2.687) was published in January 19, including selected, peer-reviewed, papers from the PRE'17 Workshop. The Guest Editors were Dominik Dorosz, Giancarlo C. Righini, Maurizio Ferrari, and Laeticia Petit. []
  • A book on Glass Micro- and Nanospheres: Physics and Applications was published in September 2019, edited by Giancarlo C. Righini.
  • A Special Issue of the journal Ceramics International (IF= 3.450) is collecting papers from the PRE'19 Workshop. Submission is open, and the deadline is set at December 1st, 2019. The Guest Editors are Wilfried Blanc and Giancarlo C. Righini, together with Pieter Dorenbos and Fiorenzo Vetrone.
  • A Special issue of the journal Applied Sciences (IF= 2.217) is open for submissions on the subject of Ion Exchange in Glasses and Crystals. The deadline is on 26 June 2020. Guest editors are Jesús Liñares Beiras and Giancarlo C. Righini.




An activity begun in 2018 and continuing in the next years consists in arranging a collection of reprints of articles published by TC20 members in open access international journals. The provisional name of such a collection is PHOTONIC GLASSES: A STORE OF KNOWLEDGE, and is edited by Giancarlo C. Righini. Its goal is to make easily available a virtual volume whose contents may be greatly useful to both the researchers and the newcomers to the field of glasses for optics and photonics.

A preliminary set of articles is available since mid December 2018 at the address



Book on Glass Micro- and Nanospheres

TC20 members are regularly contributing to the most important journals in the areas of glasses and optical - photonic materials. Invited contributions to glass books are also frequent, and sometimes books on different aspects of glass science and technology are authored or edited by TC20 members.

Though far from exhaustive, the present list includes a selection of papers published in 2019 by some members of TC20. 

  • P. Lopez-Iscoa, N. Ojha, A. Mishra, D. Pugliese, R. Gumenyuk, N. G. Boetti, D. Janner, J. Troles, B. Bureau, C. Boussard-Plédel, J. Massera, D. Milanese, L. Petit. “Design, processing and characterization of an optical core - bioactive clad phosphate fiber for biomedical applications”, J. American Ceramic Society 102 (2019) 6882–6892
  • N. Ojha, T. Trautvetter, I. Norrbo, A. Kalide, M. Lastusaari, R. Mueller, L. Petit “Sintered silica bodies with persistent luminescence”, Scripta Materialia, 166 (2019) 15–18
  • I. Dmitrieva, P. Lopez-Iscoa, D. Milanese, and L. Petit “Ternary borosilicates as potential cladding glasses for semiconductor core optical fibers”, Intl. J. Applied Glass Science, 10 (2019) 151–156
  • A. Mishra, F. Desevedavy, L. Petit, F. Smektala, J. Massera “Core-clad phosphate glass fibers for biosensing”, Materials Science & Engineering C, 96 (2019) 458–465
  • N. Ojha, M. Tuomisto, M. Lastusaari, L. Petit ”NaYF4:Er3+,Yb3+ nanocrystals-containing fluorophosphate glasses with upconversion prepared using the direct particles doping method”, RSC Advances, 8 (2018) 19226 - 19236
  • N. Ojha, H. Nguyen, T. Laihinen, T. Salminen, M. Lastusaari, L. Petit ”Corrosion of microparticles in phosphate glass melt”, Corrosion Science, 135 (2018) 207-214
  • M. Saarinen, A. Nommeots-Nomm, M. Hokka, J. Laurila, I. Norrbo, M. Lastusaari, J. Massera, L. Petit “Persistent Luminescent Particles Containing Bioactive Glasses: Prospect Toward Tracking in-vivo Implant Mineralization using Biophotonic glasses”, J. European Ceram Soc. 38 (2018) 287-295
  • J. J. Velázquez, J. Mosa, G. Gorni, R. Balda, J. Fernández, L. Pascual, A. Durán, Y. Castro “Transparent SiO2-GdF3 sol–gel nano-glass ceramics for optical applications”, J. Sol-Gel Sci. Techn. 89 (2019) 322–332.
  • F. Muñoz, R. Balda “A highly efficient method of dehydroxylation and fining of Nd phosphate laser glasses”, Int. J. App. Glass Sci. 10 (2019) 157-161. DOI: 10.1111/ijag.12974.
  • G. Gorni, J.J. Velázquez, J. Mosa, G.C. Mather, A. Serrano, M. Vila, G.R. Castro, D. Bravo, R. Balda, J. Fernández “Transparent Sol-Gel Oxyfluoride Glass-Ceramics wit High Crystalline Fraction and Study of RE incorporation” Nanomaterials 9 (2019) 530. DOI: 10.3390/nano9040530.
  • J.J. Velázquez, J. Mosa, G. Gorni, R. Balda, J. Fernández, A. Durán and Y. Castro “Novel sol-gel SiO2-NaGdF4 transparent nano-glass-ceramics”, J. Non-Cryst. Solids 520 (2019) 119447-119451.  DOI: 10.1016/j.jnoncrysol.2019.05.023.
  • I. Iparraguirre, Azkargorta, S. García-Revilla, J. Fernández, R. Balda “Input/output energy in solid state dye random lasers” Optics Express 27 (2019) 19418-19425 DOI: 10.1364/OE.27.019418
  • A. Albalawia, C. Brilliant, A. Chiasera, H. Gebavi, R. Balda, M. Ferrari, W. Blanc, W. Albalawi, H. Hung, A. Quandt, A. Lukowiak, S. Taccheo “Analytical modelling of Tm-doped tellurite glass including cross-relaxation process”, Opt. Mater. 87 (2019) 29-34. DOI: 10.1016/j.optmat.2018.06.037
  • Y. Katayama, S. Tanabe “Downconversion for 1 micron luminescence in lanthanide and Yb3+ co-doped phosphors", Chap.12 in Solar Cells and Light Management, F. Enrichi & G. C. Righini, Eds. (Elsevier, 2019) pp.415-441. 
  • J. Ueda, A. Hashimoto, S. Tanabe, "Orange Persistent Luminescence and Photodarkening Related to Paramagnetic Defects of Nondoped CaO-Ga2O3-GeO2 Glass", J. Phys. Chem. C (2019) in press. DOI: 10.1021/acs.jpcc.9b07638
  • J. Ueda, S.Tanabe, "Review of luminescent properties of Ce3+-doped garnet phosphors: New insight into the effect of crystal and electronic structure", Opt. Mater. Express 1 (2019) 100018 (Invited Article)       DOI:10.1016/j.omx.2019.100018
  • K. Asami, J. Ueda, S. Tanabe, "Long persistent luminescence and blue photochromism in Eu2+-Dy3+ co-doped barium silicate glass ceramic phosphor", J. Lumin. 207, (2019) 246-250.     DOI: 10.1016/j.jlumin.2018.11.006
  • J. Xu, S. Tanabe, "Persistent luminescence instead of phosphorescence: History, mechanism, and perspective", J. Lumin. 205, (2019) 581-620. (Invited Review)    DOI: 10.1016/j.jlumin.2018.09.047  (Ranked as Top 1 Downloaded Article in J. Lumin. for 12-months after its publication)
  • W. Blanc, I. Martin, H. François-Saint-Cyr, X. Bidault, S. Chaussedent, C. Hombourger, S. Lacomme, P. Le Coustumer, D. R. Neuville, D. Larson, T. J. Prosa, C. Guillermier “Compositional Changes at the Early Stages of Nanoparticles Growth in Glasses”, J. Physical Chemistry C, 123 (2019) 29008-29014.  DOI: 10.1021/acs.jpcc.9b08577
  • T. Paixão, L. Pereira, R. Min, C. Molardi, W. Blanc, D. Tosi, C. Marques, P. Antunes, “Inscription of fiber Bragg gratings and Fabry-Pérot interferometers on a Er-MgO-doped optical fiber”, Optics Laser and Technology, 123 (2020) 105946. DOI: 10.1016/j.optlastec.2019.105946
  • A. Beisenova, A. Issatayeva, I. Iordachita, W. Blanc, C. Molardi, D. Tosi “Distributed fiber optics 3D shape sensing by means of high scattering NP-doped fibers simultaneous spatial multiplexing”, Optics Express 27 (2019) 22074-22087.  DOI: 10.1364/OE.27.022074
  • F. Mady, A. Guttilla, M. Benabdesselam, W. Blanc, “Systematic investigation of composition effects on the radiation-induced attenuation mechanisms of aluminosilicate, Yb-doped silicate, Yb- and Yb,Ce-doped aluminosilicate fiber preforms”, Optical Materials Express (Invited Article)  9 (2019) 2466-2489.
  • A. Beisenova, A. Issatayeva, S. Sovetov, S. Korganbayev, M. Jelbuldina, Z. Ashikbayeva, W. Blanc, E. Schena, S. Sales, C. Molardi, D. Tosi, “Multi-fiber distributed thermal profiling of minimally invasive thermal ablation with scattering-level multiplexing in MgO-doped fibers », Biomedical Optics Express, 10 (2019) 1282-1296.  DOI : 10.1364/BOE.10.001282
  • A. Chiasera, C. Meroni, F. Scotognella, Y. G. Boucher, G. Galzerano, A. Lukowiak, D. Ristic, G. Speranza, S. Valligatla, S. Varas, L. Zur, M. Ivanda, G. C Righini, S. Taccheo, R. Ramponi, M. Ferrari, “Coherent emission from fully Er3+ doped monolithic 1-D dielectric microcavity fabricated by RF Sputtering”, Optical Materials 87 (2019) 107-111.
  • L. Zur, C. Armellini, S. Belmokhtar, A. Bouajaj, E. Cattaruzza, A. Chiappini, F. Coccetti, M. Ferrari, F. Gonella, G. Righini, E. Trave, A. Vomiero, F. Enrichi, “Comparison between glass and glassceramic silica-hafnia matrices on the down-conversion efficiency of Tb3+/Yb3+ rare earth ions”, Optical Materials 87 (2019) 102-106.
  • M. Soltys, A. Górny, L. Zur, M. Ferrari, G. C. Righini, W. A. Pisarski, J. Pisarska “White light emission through energy transfer processes in barium gallo-germanate glasses co-doped with Dy3+-Ln3+ (Ln =Ce, Tm)”, Optical Materials 87 (2019) 63-69.
  • A. Chiappini, C. Armellini, V. Piccolo, L. Zur, A. Vaccari, D. Zonta, G.C. Righini, M. Ferrari, “Colloidal crystals based portable chromatic sensor for butanol isomers and water mixtures detection”, Optical Materials 90 (2019) 152-158.
  • M. Kuwik, A. Górny, L. Zur, M. Ferrari, G. C. Righini, W. A. Pisarski, J. Pisarska, “Influence of the rare earth ions concentration on luminescence properties of barium gallo-germanate glasses for white lighting”, J. Luminescence 211 (2019) 375-381.
  • C. Meroni, F. Scotognella, Y. Boucher, A. Lukowiak, D. Ristic, G. Speranza, S. Varas, L. Zur, M. Ivanda, S. Taccheo, R. Ramponi, G. C. Righini, M. Ferrari, A. Chiasera, “Low-threshold coherent emission at 1.5µm from fully Er3+ doped monolithic 1D dielectric microcavity fabricated by rf-sputtering”, Ceramics 2 (2019) 74-85.
  • G. C. Righini, Editor, Glass Micro- and Nanospheres. Physics and Applications, Jenny Stanford, Singapore (2019).
  • F. Enrichi and G. C. Righini, Editors, Solar Cells and Light Management. Materials, Strategies and Sustainability, Elsevier, Amsterdam (2019)



Committee Members: back to top

Adam, Jean-Luc
Balda, Rolindes Committee Position: Core Group
Ballato, John Committee Position: Core Group
Choi, Yong Gyu
Dorosz, Dominik
Falcony, Ciro
Ferrari, Maurizio
Hewak, Daniel Committee Position: Core Group
Jha, Animesh
Jiang, Shibin Committee Position: Vice Chair
Jiang, Xin
Kondo, Yuki
Messaddeq, Younes
Nalin, Marcelo
Nolin, Lars
Ohishi, Yasutake
Petit, Laeticia Committee Position: Secretary
Richardson, Kathleen Committee Position: Core Group
Righini, Gian Carlo Committee Position: Chair
Tanabe, Setsuhisa Committee Position: Core Group
Zhang, Long
Zhang, X-H.

Committee Contact Details: back to top

TC20 : Photonic glasses and optical fibers
Dr. Giancarlo C. Righini
CNR & Enrico Fermi Center

Email TC20 : Photonic glasses and optical fibers Using The Form Below.


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