Compact temperature-insensitive modulator based on silicon microring assistant Mach–Zehnder interferometer

On the silicon-on-insulator platform, an ultra compact temperature-insensitive modulator based on cascaded microring assistant Mach-Zehnder interferometer is proposed and demonstrated with numerical simulation. According to the calculated results, the tolerated variation of ambient temperature can be as high as 134℃ while the footprint of such silicon modulator is only 340 μm².