III-V-on-silicon integrated micro - spectrometer for the 3 μm wavelength range Article Swipe

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Spectrometer Photodiode Optics Materials science Responsivity Grating Optoelectronics Arrayed waveguide grating Diffraction grating Wavelength Waveguide Silicon Wavelength-division multiplexing Photodetector Physics

Muhammad Muneeb , Anton Vasiliev , Alfonso Ruocco , Aditya Malik , Hong Tao Chen , Miloš Nedeljković , Jordi Soler Penadés , L. Cerutti , Jean‐Baptiste Rodriguez , Goran Z. Mashanovich , M.K. Smit , E. Tourni , G. Roelkens ·

YOU? · · 2016 · Open Access · · DOI: https://doi.org/10.1364/oe.24.009465 · OA: W2336174852

A compact (1.2 mm2) fully integrated mid-IR spectrometer operating in the 3 μm wavelength range is presented. To our knowledge this is the longest wavelength integrated spectrometer operating in the important wavelength window for spectroscopy of organic compounds. The spectrometer is based on a silicon-on-insulator arrayed waveguide grating filter. An array of InAs0.91Sb0.09 p-i-n photodiodes is heterogeneously integrated on the spectrometers output grating couplers using adhesive bonding. The spectrometer insertion loss is less than 3 dB and the waveguide-referred responsivity of the integrated photodiodes at room temperature is 0.3 A/W.