Thermo-optically switchable drop filter with photoinduced Bragg grating on silica-based waveguide

Summary form only given. In summary, a novel switchable drop filter has been proposed and demonstrated with photoinduced Bragg grating on a silica-based waveguide with the heater power consumption of 0.124 W (a driving current is 60 mA). Good switching responses were obtained by 0.4-nm shifts of Bragg wavelength.