Tunable integrated optical modulator with dynamical photonic band transition of photonic crystals

GÖVDELİ A., KOCAMAN S.

Conference on Silicon Photonics XIV, San-Francisco, Kostarika, 4 - 06 Şubat 2019, cilt.10923 identifier identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 10923
  • Doi Numarası: 10.1117/12.2510097
  • Basıldığı Şehir: San-Francisco
  • Basıldığı Ülke: Kostarika
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

A Mach-Zehnder Interferometer based optical modulator composed of photonic crystals as phase shifters is presented. The switching process relies on the phase modulation along the arms of interferometer resulted from the photonic band shift of the photonic crystal regions. A small bulk index change leads to a large effective index difference between two arms of the interferometer and a small foot-print device can operate as a modulator. Presented MZI-based optical modulator is shown to have tunable bandwidth up to 15.7nm. This interesting approach provides possibility of broadband, low-voltage, low-loss, high-speed and tunable optical integrated switches, modulators and multiplexers.