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Fast and widely tunable III-V/SOI DFB and DBR lasers

Research Area: Heterogeneous integration technology for silicon photonics , Integrated lasers and LEDs , Silicon photonics for telecom, datacom and interconnect

Main Researcher: Sören Dhoore

The aim of this work is to realize widely tunable DFB and DBR lasers based on the heterogeneous integration of InP-compound epitaxial layer stacks on the silicon-on-insulator (SOI) platform. Tunable laser diodes can be made using electronic or thermal tuning. Electronic tuning exploits the free-carrier plasma dispersion effect, which allows very fast wavelength switching but results in linewidth broadening. Thermal tuning gives lower tuning speeds but allows to maintain a narrow laser linewidth over the entire tuning range. Our work covers both tuning approaches. Wide wavelength tuning is achieved through the Vernier effect. Coupling from the III-V to the underlying SOI waveguide is realised using adiabatic tapered coupling structures.

(Left) Schematic view of a III-V/SOI SG-DFB laser; (Right) Superimposed lasing spectra, as demonstrated in Dhoore et al., IEEE Photon. Technol. Lett., 2016.
(Left) Schematic view of a III-V/SOI SG-DFB laser; (Right) Superimposed lasing spectra, as demonstrated in Dhoore et al., IEEE Photon. Technol. Lett., 2016.

Other people involved:

Publications

    International Journals

  1. J. Zhang, Y. Li, S. Dhoore, G. Morthier, G. Roelkens, Unidirectional, widely-tunable and narrow-linewidth heterogeneously integrated III-V-on-silicon laser, Optics Express, 25(6), United States, p.7092-7100 (2017)  Download this Publication (2.8MB).
  2. S. Dhoore, G. Roelkens, G. Morthier, III-V-on-silicon three-section DBR laser with over 12 nm continuous tuning range, Optics Letters, 42(6), p.1121-1124 (2017)  Download this Publication (2.2MB).
  3. S. Dhoore, L. Li, A. Abbasi, G. Roelkens, G. Morthier, Demonstration of a discretely tunable III-V-on-silicon sampled grating DFB laser, IEEE Photonics Technology Letters, 28(21), p.2343-2346 (2016)  Download this Publication (2.2MB).
      International Conferences

    1. S. Dhoore, G. Roelkens, G. Morthier, Towards fast tunable InP-on-SOI laser diodes, European Semiconductor Laser Workshop 2017, Denmark, (2017).
    2. S. Dhoore, G. Roelkens, G. Morthier, Heterogeneously Integrated III-V/SOI DBR Laser with Over 7 nm Continuous Wavelength Tuning Range, European Conference on Integrated Optics (ECIO, Netherlands, p.paper M5.2 (2 pages) (2017)  Download this Publication (560KB).
    3. S. Dhoore, G. Roelkens, G. Morthier, Discretely tunable III-V/SOI SG-DFB laser, Proceedings Symposium IEEE Photonics Society Benelux, Belgium, p.39-42 (2016)  Download this Publication (6.8MB).
    4. S. Dhoore, L. Li, A. Abbasi, G. Roelkens, G. Morthier, Demonstration of a discretely tunable III-V/SOI sampled grating distributed feedback laser, IEEE Photonics Conference, 29th Annual Conference of the IEEE Photonics Society, United States, (2016)  Download this Publication (7.2MB).
    5. S. Dhoore, G. Roelkens, G. Morthier, Design of an electronically tunable laser diode integrated on the SOI platform, Proceedings of the 20th Annual Symposium of the IEEE Photonics Benelux Chapter, Belgium, (2015)  Download this Publication (125KB).

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