Projects per year
Personal profile
Research interests
Silicon photonics, integrated optics, photonic integrated circuits, optoelectronics, optical communication, optical phased arrays, LIDAR, optical beam steering, optical coherence tomography, optical gas sensing
Expertise area
Silicon photonics, integrated optics, photonic integrated circuits, optoelectronics, optical communication, optical phased arrays, LIDAR, optical beam steering, optical coherence tomography, optical gas sensing, project management, sales
Short bio
Dr. Timo Aalto has worked at VTT since 1997 with the primary research focus on silicon photonics. This makes him one of the pioneers in the field. He received his M.Sc. and D.Sc. degrees in optoelectronics technology from the Helsinki University of Technology in 1998 and 2004, respectively. He leads the Silicon photonics team that is the key user of VTT's clean room facility in Espoo (Micronova). He has >80 peer-reviewed journal and conference publications. He has reviewed EU projects, journal articles and theses, and written one book chapter. He has coordinated several large projects funded by EU, the European space agency, national funding organizations and industry.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
Education/Academic qualification
Natural sciences, Doctorate, Microphotonic silicon waveguide components, Helsinki University of Technology
29 Sept 1998 → 30 Dec 2004
Award Date: 30 Dec 2004
Skills and expertise
- silicon photonics
- integrated optics
- optical communication
- optical sensing
- project management
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Collaborations and top research areas from the last five years
Recent external collaboration on country/territory level. Dive into details by clicking on the dots or
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DYNAMOS: DYNAmic and Reconfigurable data centre networks with Modular Optical Subsystems
Aalto, T. (PI), Bryant, K. (Manager), Harjanne, M. (Participant), Paul, S. (Participant), Marin Vasquez, Y. (Participant), Bera, A. (Participant), Lee, J.-W. (Participant) & Sun, F. (Participant)
1/08/22 → 31/07/26
Project: EU project
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ECO-Fusion: Finnish Ecosystem for Industrial Fusion Technology
Hakola, A. (Owner), Brace, W. (Participant), Suhonen, T. (Participant), Laukkanen, A. (Participant), Lappalainen, P. (Participant), Salmi, A. (Participant), Tala, T. (Participant), Airila, M. (Manager), Huuhanmäki, J. (Participant), Soppela, O. (Participant), Alanen, J. (Participant), Ryynänen, T. (Participant), Aalto, T. (Participant), Pinomaa, T. (Participant), Kirjasuo, A. (Participant), Shahwar, D. (Participant), Hokkanen, A. (Participant), Järvinen, A. (Participant), Kapulainen, M. (Participant), Sun, F. (Participant), Wälchli, B. (Participant), Avikainen, T. (Participant), Kotilainen, M. (Participant), Aho, J. (Participant), Apilo, T. (Participant), Bryant, K. (Participant), Dif, B. (Participant), Freimanis, A. (Participant), Hakkarainen, M. (Participant), Hakkarainen, T. (Participant), Harviainen, T. (Participant), Heikinheimo, J. (Participant), Helminen, A. (Participant), Hietala, J. (Participant), Immonen, E. (Participant), Jokinen, T. (Participant), Kaarmila, P. (Participant), Kanervo, K. (Participant), Katajamäki, K. (Participant), Korhonen, T. (Participant), Koskinen, J. (Participant), Kurki, S. (Participant), Lavonen, T. (Participant), Leppänen, J. (Participant), Leskinen, A. (Participant), Liinasuo, M. (Participant), Likonen, J. (Participant), Lyytinen, J. (Participant), Malm, T. (Participant), Martikainen, H. (Participant), Martins, J. (Participant), Norrman, S. (Participant), Peng, C. Y. (Participant), Pohja, R. (Participant), Rainio, K. (Participant), Raunio, K. (Participant), Rökman, J. (Participant), Saarela, O. (Participant), Saarinen, H. (Participant), Saifi, Q. (Participant), Salonen, T.-T. (Participant), Sarsama, J. (Participant), Selin, K. (Participant), Siren, M. (Participant), Siuko, M. (Participant), Truong, V. D. (Participant), Tyrväinen, T. (Participant), Viitanen, A. (Participant), Välisalo, T. (Participant), Wallin, A. (Participant), Ylisaukko-oja, A. (Participant), Szogradi, M. (Participant), Järvinen, A. (Manager) & Snicker, A. (Manager)
1/01/21 → 30/06/24
Project: Business Finland project
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ECO-Fusion: Finnish Ecosystem for Industrial Fusion Technology
Hakola, A. (Manager), Airila, M. (Participant), Brace, W. (Participant), Ryynänen, T. (Participant), Hakkarainen, M. (Participant), Leskinen, A. (Participant), Kirjasuo, A. (Participant), Aalto, T. (Participant), Shahwar, D. (Participant), Harjanne, M. (Participant), Hokkanen, A. (Participant), Järvinen, A. (Participant), Kapulainen, M. (Participant), Paul, S. (Participant), Salmi, A. (Participant), Sun, F. (Participant), Tala, T. (Participant), Wälchli, B. (Participant), Avikainen, T. (Participant), Majaniemi, S. (Participant), Laukkanen, A. (Participant), Suhonen, T. (Participant), Aho, J. (Participant), Baumann Duran, A. (Participant), Goel, S. (Participant), Korhonen, T. (Participant), Linnala, L. (Participant), Lukin, J. (Participant), Pakarinen, O. (Participant), Pinomaa, T. (Participant), Pohja, R. (Participant), Ren, S. (Participant), Tahkola, M. (Participant), Norrman, S. (Participant), Szogradi, M. (Participant), Aho-Mantila, L. (Participant), Karhunen, J. (Participant), Likonen, J. (Participant), Saari, S. (Participant), Lavonen, T. (Participant), Leskinen, A. (Participant), Hakkarainen, T. (Participant), Verma, N. (Participant), Viitanen, K. (Participant), Viitanen, A. (Participant), Snicker, A. (Participant), Apilo, T. (Participant), Huuhanmäki, J. (Participant), Soppela, O. (Participant), Kurki, S. (Participant), Martins, J. (Participant), Rökman, J. (Participant), Wallin, A. (Participant), Bryant, K. (Participant), Katajamäki, K. (Participant), Kokkonen, P. (Participant), Lyytinen, J. (Participant), Lyytinen, T. (Participant), Kit, A. (Participant), Bruncrona, A. (Participant), Jordan, D. (Participant), Martikainen, H. (Participant), Saarinen, H. (Participant), Siuko, M. (Participant), Siren, M. (Participant), Tikka, P. (Participant), Truong, V. D. (Participant), Uusi-Illikainen, M. (Participant), Zeb, A. (Participant), Alanen, J. (Participant), Kaartinen, D. (Participant), Saifi, Q. (Participant), Dif, B. (Participant), Heikinheimo, J. (Participant), Harviainen, T. (Participant), Peng, C. Y. (Participant), Arffman, P. (Participant), Lappalainen, P. (Participant), Moilanen, P. (Participant), Freimanis, A. (Participant), Helminen, A. (Participant), Immonen, E. (Participant), Tyrväinen, T. (Participant), Rainio, K. (Participant), Kilpeläinen, P. (Participant), Sipola, T. (Participant), Strömmer, E. (Participant), Tanskanen, A. (Participant), Tenhunen, J. (Participant), Vaarala, T. (Participant), Ylisaukko-oja, A. (Participant), Liinasuo, M. (Participant), Salonen, T.-T. (Participant), Tammentie, B. (Participant), Jokinen, T. (Participant), Kaarmila, P. (Participant), Koskinen, J. (Participant), Heikkilä, J. (Participant), Malm, T. (Participant), Sarsama, J. (Participant), Välisalo, T. (Participant), Alamäki, M. (Participant) & Pennala, R. (Participant)
1/01/21 → 30/06/24
Project: Business Finland project
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Photonic technologies for progrAmmable transmission and switching modular systems based on Scalable Spectrum/space aggregation for future agIle high capacity metrO Networks
Delrosso, G. (Manager), Bhat, S. (Participant) & Aalto, T. (Owner)
1/12/17 → 31/05/21
Project: EU project
Research output
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3D Printed Lenses for Vertical Beam Collimation of Optical Phased Arrays
Muntaha, S., Hokkanen, A., Harjanne, M., Cherchi, M., Suopajärvi, P., Karvinen, P., Pekkarinen, M., Roussey, M. & Aalto, T., 1 Jun 2024, In: 3D Printing and Additive Manufacturing. 11, 3, p. e1227-e1234Research output: Contribution to journal › Article › Scientific › peer-review
Open Access1 Citation (Scopus) -
Determination of mode strengths in channel waveguide from the complex electric field
Doughan, I., Halder, A., Reduto, I., Koivurova, M., Aalto, T., Roussey, M. & Turunen, J., 19 Nov 2024, In: Scientific Reports. 14, 1, 28665.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access -
Development of dynamic data centre networks and fast-tunable lasers in the DYNAMOS project
Aalto, T., Bryant, K., Harjanne, M., Eschenbaum, C., Pitwon, R. & Debrégeas, H., 2024, Optical Interconnects XXIV. Chen, R. T. & Schroder, H. (eds.). International Society for Optics and Photonics SPIE, 1289203. (Proceedings of SPIE - The International Society for Optical Engineering, Vol. 12892).Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review
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Low-crosstalk 1×40 100 GHz spacing Cascaded Planar Echelle Gratings for Mux/Demux on 3-μm Silicon platform
Wang, Y., Harjanne, M., Bhat, S., Delrosso, G., Aalto, T. & Calabretta, N., 1 Mar 2024, In: Journal of Lightwave Technology. 42, 5, p. 1538-1544 7 p.Research output: Contribution to journal › Article › Scientific › peer-review
1 Citation (Scopus) -
On-Chip Polarization Rotators Using Metasurface
Shahwar, D., Kapulainen, M., Haatainen, T., Harjanne, M., Cherchi, M., Sun, Z., Aalto, T. & Tappura, K., 30 Jul 2024, In: ACS Omega. 9, 30, p. 33055-33063 9 p.Research output: Contribution to journal › Article › Scientific › peer-review
Open Access