Chinese Optics Letters, 2015, 13 (11): 111301, Published Online: Sep. 13, 2018
Compact, integrated PLZT optical switch array Download: 1019次
060.4510 Optical communications 130.3120 Integrated optics devices 130.3130 Integrated optics materials 130.4815 Optical switching devices
Abstract
Due to the excellent electro-optic properties of lead lanthanum zirconium titanate (( Pb , La ) ( Zr , Ti ) O 3 , 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 dB with a relatively low driving voltage. The 1 × 2 PLZT switch shows an insertion loss of 18.3 dB and crosstalk of 20.5 dB at an applied voltage of 9.5 V. The fabricated 1 × 4 switch array shows an insertion loss of 20.7 dB and a crosstalk of 20.5 dB 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.
Guohua Hu, Zhipeng Qi, Binfeng Yun, Ruohu Zhang, Yiping Cui. Compact, integrated PLZT optical switch array[J]. Chinese Optics Letters, 2015, 13(11): 111301.