In terms of the transmission theory of the arrayed waveguide grating

by using Fluoropolymer(PFS-co-GMA)

the parameter optimization is performed for a 17×17 AWG multiplexer.In the fabrication of the polymeric arrayed waveguide grating (AWG) device

the cores of the channels and the arrayed waveguides exhibit trapezoid cross-sections instead of originally designed rectangular ones after the reactive ion etching and the stean-redissolution

causes the phaeshift of the light propagating in the AWG

results in the shift of the transmission spectrum

and bring about the variation of the crosstalk.In this paper

by employing the equivalent energy flow method

the AWG parameters have been fixed

and a polymer AWG multiplexer with flat have been designed and fabricated.Measured results show that the central wavelength is 1550.865nm

3-dB bandwidth is about 0.478 nm

insertion loss is 10.5 dB

crosstalk is about -21.5dB.