Timo Aalto

D.Sc. (Tech.)

  • Phone+358408485037
19992020

Research output per year

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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.

Education/Academic qualification

Physical sciences, Doctorate, Helsinki University of Technology

29 Sep 199830 Dec 2004

Award Date: 30 Dec 2004

Skills and expertise

  • silicon photonics
  • integrated optics
  • optical communication
  • optical sensing
  • project management

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Research Output

Amorphous silicon waveguide escalator: Monolithic integration of active components on 3 μm SOI platform

Bera, A., Cherchi, M., Tappura, K., Heimala, P. & Aalto, T., 2020, Silicon Photonics XV. Reed, G. T. & Knights, A. P. (eds.). International Society for Optics and Photonics SPIE, 1128507. (Proceedings of SPIE, Vol. 11285).

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

  • Flat-top interleavers based on single MMIs

    Cherchi, M., Sun, F., Kapulainen, M., Harjanne, M. & Aalto, T., 2020, Silicon Photonics XV. Reed, G. T. & Knights, A. P. (eds.). International Society for Optics and Photonics SPIE, 112850G. (Proceedings of SPIE, Vol. 11285).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

  • Monolithic integration of up to 40 GHz Ge photodetectors in 3μm SOI

    Vehmas, T., Kapulainen, M., Heimala, P., Delrosso, G., Sun, F., Gao, F. & Aalto, T., 2020, Silicon Photonics XV. Reed, G. T. & Knights, A. P. (eds.). International Society for Optics and Photonics SPIE, 112850V. (Proceedings of SPIE, Vol. 11285).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

  • Polymer interposer for efficient light coupling into 3 μm silicon-on-insulator waveguides

    Hiltunen, M., Harjanne, M. T., Vehmas, T., Wälchli, B., Heimala, P. & Aalto, T., 1 Jan 2020, Optical Interconnects XX. Schröder, H. & Chen, R. T. (eds.). International Society for Optics and Photonics SPIE, 112860I. (Proceedings of SPIE, Vol. 11286).

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

  • Precise length definition of active GaAs-based optoelectronic devices for low-loss silicon photonics integration

    Tuorila, H., Viheriälä, J., Zia, N., Cherchi, M., Harjanne, M., Isoaho, R., Aalto, T. & Guina, M., 15 Feb 2020, In : Optics Letters. 45, 4, p. 943-946 4 p.

    Research output: Contribution to journalArticleScientificpeer-review