Photonic functional devices for next generation network systems

A high performance photonic functional device is the key to the realization of large capacity, energy efficient, and low-cost networks. The seminar includes some topics studied in laboratory; (1) wavelength selective switches using silica and silicon waveguides; (2) small-sized optical switch using phase-change material; and (3) optical devices for T-band communication. The T-band (Thousand-band: 1000-1260 nm), which offers more than 60 THz worth of bandwidth and wider than C- and L-band combined (11 THz).