Analysis of a 1 × 16 polymer microring resonant wavelength demulti/multiplexer with double seriated identical microrings in every filter element

摘要

Novel formulae of the amplitude coupling ratios and transfer functions are presented, parameter optimization is performed, transmission characteristics are analysed, and effects of manufacturing tolerances are investigated for a 1 × 16 polymer microring resonant wavelength demulti/multiplexer with double seriated rings in every filter element around the central wavelength of 1.55 μm with wavelength spacing 0.8 nm. Analytical results show that the 3 dB bandwidth is about 0.24 nm, the insertion loss is less than 0.77 dB, and the crosstalk loss is below -30 dB for every vertical output channel of the designed device without tolerances. The manufacturing tolerances cause a shift of the transmission spectrum and result in the increase of the crosstalk compared with the designed case without tolerances.