Abstract
This paper presents a novel all-optical switch based on multi-mode interference (MMI) and Mach–Zehnder (MZ) using self-imaging principle and optical Kerr effect of organic polymer material. A branch waveguide is inserted into one of Mach–Zehnder interferometer arms, where the controlling beam is introduced. The device with a core of azo polymer is simulated by the beam propagation method (BPM). The result shows that, the bent branch waveguide of 2μm width is inserted in MZ interferometer arm at 100μm has the minimal impact on the original waveguide. And a good light switching function is achieved via controlling light intensity of 4mW.
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