An optically activated optical switch based on suppression of mode interference (SMI) is presented. The imaging properties of multi-mode interference (MMI) section in the switch with Y-branch can be modified by a controlling light injection. The switch was simulated by finite difference beam propagation method (FD-BPM) and fabricated on GaAlAs/GaAs epitaxial materials. At the wavelength of 1.31 um, the primary experiment showed an extinction ratio of about 8 dB with controlling light power density of 73.5 W/mm2.
© 2005 Chinese Optics Letters
(060.1810) Fiber optics and optical communications : Buffers, couplers, routers, switches, and multiplexers
(130.3120) Integrated optics : Integrated optics devices
(230.7370) Optical devices : Waveguides
Longzhi Li, Yi Tang, Jianyi Yang, Minghua Wang, and Xiaoqing Jiang, "Compact all-optical switches based on photon-induced suppression of mode interference," Chin. Opt. Lett. 4, 93-95 (2006)