16-Channel Integrated Multi-Wavelength DFB Lasers with 200 GHz Channel Spacing
Novel In-Plane Semiconductor Lasers XXIII(2024)
摘要
Multi-wavelength laser sources on silicon photonics can enable large spectral coverage for DWDM optical I/O links and leverage the scalability of a CMOS compatible process simultaneously. In this work, we report a laser array of four four-wavelength distributed feedback lasers that produce in total sixteen wavelength channels simultaneously with a wavelength spacing of 200 GHz and output power of 17 dBm per laser. We show integrated III-V/Si hybrid lasers on the same die with wafer-level bonded epitaxial III-V layer that spans a spectral coverage of 17 nm through the 16 wavelength channels. We also measured the relative intensity noise (RIN) of all sixteen wavelength channels to be under -135 dB/Hz and the Lorentzian linewidth to be less than 300 kHz.
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