Hybrid Nanowire Photodetector Integrated in a Silicon Photonic Crystal
Masato Takiguchi, Satoshi Sasaki, Kouta Tateno, Edward Chen, Kengo Nozaki, Sylvain Sergent, Eiichi Kuramochi, Guoqiang Zhang, Akihiko Shinya, Masaya Notomi
Abstract
The combination of hybrid nanowire photodetector on silicon photonic crystals has the potential to be both highly sensitive and ultrafast. A p-i-n nanowire was integrated into a silicon photonic crystal via nanomanipulation technique and has been successfully implemented as a photodiode on silicon chip with Al:ZnO transparent electrode. The hybrid nanowire photodiode can detect laser light through the Al:ZnO coated input waveguide and is capable of measuring the photonic crystal enhanced photocurrent. In addition, a measurement of the enhanced photocurrent in the light cone by the nanoantenna was also conducted. Our results reveal the prospects for future photonic on-chip processors utilizing CMOS-compatible hybrid nanowire photodetector in a photonic crystal.