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1 May 2014 A hybrid semiconductor-glass waveguide laser
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We report on a novel type of laser in which a semiconductor optical amplifier (SOA) receives frequency-selective feedback from a glass-waveguide circuit. The laser we present here is based on InP for operation in the 1.55 μm wavelength range. The Si3N4/SiO2 glass waveguide circuit comprises two sequential high-Q ring resonators. Adiabatic tapering is used for maximizing the feedback. The laser shows single-frequency oscillation with a record-narrow spectral linewidth of 24 kHz at an output power of 5.7 mW. The hybrid laser can be tuned over a broad range of 46.8 nm (1531 nm to 1577.8 nm). Such InP-glass hybrid lasers can be of great interest in dense wavelength division multiplexing (DWDM) and as phase reference in optical beam-forming networks (OBFN). The type of laser demonstrated here is also of general importance because it may be applied over a huge wavelength range including the visible, limited only by the transparency of glass (400 nm to 2.35 μm).
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Youwen Fan, Ruud M. Oldenbeuving, Edwin J. Klein, Chris J. Lee, Hong Song, Muhammed R. H. Khan, Herman L. Offerhaus, Peter J. M. van der Slot, and Klaus-J. Boller "A hybrid semiconductor-glass waveguide laser", Proc. SPIE 9135, Laser Sources and Applications II, 91351B (1 May 2014);

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