Fabrication and characterization of polymer thermo-optic switch based on mmi coupler

► The polymer materials have been used to fabricate MMI-MZI thermooptic switch. ► The standard fabrication techniques such as coating, photolithography, and dry etching were used. ► The optical properties of the realized device were measured. ► The crosstalk of −36.2 dB, the power consumption of 1.85 mW, and the switch time of 0.7 ms were achieved.