Tunable and Polarization-Insensitive Arrayed- Waveguide Grating Multiplexer Fabricated from Fluorinated Polyimides

摘要

We fabricated a tunable and polarizaton- insensitive arrayed-waveguide grating (AWG) 16×16 multiplex- er that operates around the wavelenth of 1.55 μm using fluor- inated polyimides. The wavelength channel spacing was 0.8 nm, and the 3-dB passband width was 0.26 nm. The insertion loss at each channel was from 8 to 12 dB, and the crosstalk was less than -28 dB. The transmission pass wavelength was tuned over a wide range of 6 nm by heating from 24 deg. C to 64 deg. C. The slope of the temperature dependence of the pass wavelength was -0.15 nm/ deg. C, which is ten times that of a silica-based multiplexer.