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WC3 - VCSEL Integration and High-speed SModulation Session Presider: Petter Westbergh
1:30-3:00 Salon III
WC3.1 -
Silicon-Integrated Hybrid-Vertical-Cavity Lasers for Life Science Applications Invited
01:30-02:00
2017-10-04 01:30 2017-10-04 02:00 America/Denver Silicon-Integrated Hybrid-Vertical-Cavity Lasers for Life Science Applications Hybrid 850-nm-wavelength vertical-cavity lasers formed by adhesively bonding AlGaAs-material to a dielectric distributed Bragg reflector on Silicon has experimentally enabled sub-mA threshold current and 25Gb/s modulation speed. Numerical calculations estimate >0.3mW/mA slope efficiency for in-plane SiN waveguide coupled light using an intra-cavity grating. Hilton Santa Fe Historic Plaza Salon III

    J. Gustavsson , Chalmers University, Gothenburg, Sweden, S. Kumari , Ghent University-IMEC, Ghent, Belgium E. Haglund , Chalmers University, Gothenburg, Sweden J. Bengtsson , Chalmers University, Gothenburg, Sweden G. Roelkens , Ghent University-IMEC, Ghent, Belgium R. Baets , Ghent University-IMEC, Ghent, Belgium A. Larsson , Chalmers University, Gothenburg, Sweden

    Hybrid 850-nm-wavelength vertical-cavity lasers formed by adhesively bonding AlGaAs-material to a dielectric distributed Bragg reflector on Silicon has experimentally enabled sub-mA threshold current and 25Gb/s modulation speed. Numerical calculations estimate >0.3mW/mA slope efficiency for in-plane SiN waveguide coupled light using an intra-cavity grating.
WC3.2 -
Classification of Coherent Supermodes in Photonic Crystal Vertical Cavity Laser Arrays
02:00-02:15
2017-10-04 02:00 2017-10-04 02:15 America/Denver Classification of Coherent Supermodes in Photonic Crystal Vertical Cavity Laser Arrays Vertical-cavity surface-emitting laser elements are resonantly tuned with independent current injection to achieve multiple coherent output modes. A study of coherent supermodes in a linear 3x1 VCSEL array is presented, matching experimental results with 1-dimensional modal simulation. Hilton Santa Fe Historic Plaza Salon III

    B. Thompson , University of Illinois, Urbana, IL, United States, Z. Gao , University of Illinois, Urbana, IL, United States H. Dave , University of Illinois, Urbana, IL, United States S. Fryslie , Freedom Photonics, LLC, Santa Barbara, CA, United States K. Lakomy , University of Illinois, Urbana, IL, United States K. Choquette , University of Illinois, Urbana, IL, United States

    Vertical-cavity surface-emitting laser elements are resonantly tuned with independent current injection to achieve multiple coherent output modes. A study of coherent supermodes in a linear 3x1 VCSEL array is presented, matching experimental results with 1-dimensional modal simulation.
WC3.3 -
Coherence Tuning of Pulsed Photonic Crystal VCSEL Arrays
02:15-02:30
2017-10-04 02:15 2017-10-04 02:30 America/Denver Coherence Tuning of Pulsed Photonic Crystal VCSEL Arrays Characterization of coherence tuning range for 2x1 photonic crystal VCSEL arrays under pulsed excitation is reported. Far field data show the coherence range is larger under pulsed conditions compared to cw operation due to reduction of resistive diode heating. Hilton Santa Fe Historic Plaza Salon III

    H. Dave , University of Illinois, Urbana, IL, United States, S. Fryslie , Freedom Photonics, Santa Barbara, CA, United States Z. Gao , University of Illinois, Urbana, IL, United States B. Thompson , University of Illinois, Urbana, IL, United States K. Choquette , University of Illinois, Urbana, IL, United States

    Characterization of coherence tuning range for 2x1 photonic crystal VCSEL arrays under pulsed excitation is reported. Far field data show the coherence range is larger under pulsed conditions compared to cw operation due to reduction of resistive diode heating.
WC3.4 -
30-GHz small-signal modulation bandwidth with directly current-modulated 980-nm oxide-aperture VCSELs
02:30-02:45
2017-10-04 02:30 2017-10-04 02:45 America/Denver 30-GHz small-signal modulation bandwidth with directly current-modulated 980-nm oxide-aperture VCSELs Directly current-modulated 980-nm vertical-cavity surface-emitting lasers (VCSELs) with oxide-aperture-diameters of 1.5-micrometers exhibit small-signal -3-dB modulation bandwidths of 31 and 25-GHz and maximum single-mode light-output-powers of 3 and 2-mW at 25 and 85°C, respectively. The side-mode-suppression-ratio exceeds 40-dB at bias currents above threshold. Hilton Santa Fe Historic Plaza Salon III

    R. Rosales , Technische Universität Berlin, Berlin, Germany, M. Zorn , Jenoptik Laser Diode Lab GmbH, Berlin, Germany J. Lott , Technische Universität Berlin, Berlin, Germany

    Directly current-modulated 980-nm vertical-cavity surface-emitting lasers (VCSELs) with oxide-aperture-diameters of 1.5-micrometers exhibit small-signal -3-dB modulation bandwidths of 31 and 25-GHz and maximum single-mode light-output-powers of 3 and 2-mW at 25 and 85°C, respectively. The side-mode-suppression-ratio exceeds 40-dB at bias currents above threshold.
WC3.5 -
Harnessing the Asymmetry in Coherently Coupled 2x1 VCSEL Arrays
02:45-03:00
2017-10-04 02:45 2017-10-04 03:00 America/Denver Harnessing the Asymmetry in Coherently Coupled 2x1 VCSEL Arrays Coherently coupled 2x1 VCSEL arrays with lithographically defined cavity asymmetries are fabricated and characterized. Shifting of the coherent coupling region controlled by the degree of asymmetry is reported, consistent with a controlled gain/frequency tuning in addition to the current tuning. Hilton Santa Fe Historic Plaza Salon III

    Z. Gao , University of Illinois, Urbana, IL, United States, B. Thompson , University of Illinois, Urbana, IL, United States H. Dave , University of Illinois, Urbana, IL, United States S. Fryslie , Freedom Photonics, Santa Barbara, CA, United States K. Choquette , University of Illinois, Urbana, IL, United States

    Coherently coupled 2x1 VCSEL arrays with lithographically defined cavity asymmetries are fabricated and characterized. Shifting of the coherent coupling region controlled by the degree of asymmetry is reported, consistent with a controlled gain/frequency tuning in addition to the current tuning.