Due to the excellent electro-optic properties of lead lanthanum zirconium titanate(ePb; LaTeZr; TiTO3, PLZT),compact 1 × 2 and 1 × 4 PLZT optical switches with a high response speed are proposed and fabricat...Due to the excellent electro-optic properties of lead lanthanum zirconium titanate(ePb; LaTeZr; TiTO3, PLZT),compact 1 × 2 and 1 × 4 PLZT optical switches with a high response speed are proposed and fabricated successfully in this Letter. By introducing a thin isolating layer between the waveguides and the electrodes, the absorption loss of the fabricated 1 × 2 PLZT switch caused by the electrodes is reduced 8.9 d B with a relatively low driving voltage. The 1 × 2 PLZT switch shows an insertion loss of 18.3 d B and crosstalk of-20.5 d B at an applied voltage of 9.5 V. The fabricated 1 × 4 switch array shows an insertion loss of 20.7 d B and a crosstalk of-20.5 d B at an applied voltage of 13 V. The response time of the switches is less than 27 ns, and the device’s size is only 15 mm × 6 mm. The switches can be used in optical communication systems.展开更多
基金supported by the State Key Program of the National Natural Science Foundation of China under Grant No.61535012
文摘Due to the excellent electro-optic properties of lead lanthanum zirconium titanate(ePb; LaTeZr; TiTO3, PLZT),compact 1 × 2 and 1 × 4 PLZT optical switches with a high response speed are proposed and fabricated successfully in this Letter. By introducing a thin isolating layer between the waveguides and the electrodes, the absorption loss of the fabricated 1 × 2 PLZT switch caused by the electrodes is reduced 8.9 d B with a relatively low driving voltage. The 1 × 2 PLZT switch shows an insertion loss of 18.3 d B and crosstalk of-20.5 d B at an applied voltage of 9.5 V. The fabricated 1 × 4 switch array shows an insertion loss of 20.7 d B and a crosstalk of-20.5 d B at an applied voltage of 13 V. The response time of the switches is less than 27 ns, and the device’s size is only 15 mm × 6 mm. The switches can be used in optical communication systems.
