Guided-mode resonance based multicolor germanium infrared photodetector


Yilmaz Y. A., Hayran Z., Yildiz F., Kilinc T. O., Karabacak C., Bor E., ...Daha Fazla

17th International Conference on Numerical Simulation of Optoelectronic Devices NUSOD, Santa-Barbara, Honduras, 24 - 28 Temmuz 2017, ss.209-210 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Doi Numarası: 10.1109/nusod.2017.8010065
  • Basıldığı Şehir: Santa-Barbara
  • Basıldığı Ülke: Honduras
  • Sayfa Sayıları: ss.209-210
  • TED Üniversitesi Adresli: Evet

Özet

A compact low-cost multicolor germanium (Ge) infrared photodetector is designed by utilizing the guided-mode resonance condition of a one-dimensional grating with adiabatically tuned (or so-called chirped) in-plane periodicity. It is shown numerically that the resonance phenomenon is accompanied by a spectral splitting, as every wavevector component is matched with different instantaneous local in-plane periods. In result, the proposed photodetector enables multi-wavelength photon absorption up to 61% efficiency and an ideal responsivity up to 0.63 A/W over a 70 nm bandwidth, while maintaining a very small active region of 0.413 mu m(2). The reported results provide a very valuable insight into highly miniaturized ultra-compact multicolor photodetection schemes.