Mironov, EvgenyKhaleque, AbdulLiu, LimingMaksymov, IvanHattori, Haroldo2015-12-131041-1135http://hdl.handle.net/1885/75843Nanoantennas have been used in a wide range of applications in sensing, spectroscopy, and imaging-in general, the antennas can enhance physical phenomena such as the local electric field or concentrate light in a certain direction. We have fabricated an array of 80 plasmonic Yagi-Uda nanoantennas on the cladding of an optical fiber and, by doing this, we show that the signal reaching the fast detector can be increased by a factor of 5 dB. The experiment demonstrates that plasmonic directive nanoantennas can indeed collect and concentrate electromagnetic radiation along a certain direction and eventually could be used to enhance weak signals.201410.1109/LPT.2014.23523392015-12-11