Keil, N.N.KeilYao, H.H.H.H.YaoZawadzki, C.C.ZawadzkiBauer, J.J.BauerBauer, M.M.BauerDreyer, C.C.DreyerSchneider, J.J.Schneider2022-03-032022-03-032001https://publica.fraunhofer.de/handle/publica/20045910.1049/el:200104062-s2.0-0035953576An athermal arrayed-waveguide grating (AWG) multiplexer relying on an all-polymer approach is reported. The all-polymer AWG consisting of polymer waveguides fabricated on a polymer substrate exhibits excellent performance. By properly adjusting the coefficient of thermal expansion of the polymer substrate, athermal and polarisation-independent AWG devices featuring a wavelength shift of less than +or-0.05 nm in the 25-65 degrees C temperature range could be demonstrated.endiffraction gratingsintegrated opticsmultiplexing equipmentoptical arraysoptical communication equipmentoptical fabricationoptical polymersoptical waveguidesthermal expansionathermal all-polymer arrayed-waveguide grating multiplexerall-polymer approachall-polymer awgpolymer waveguides fabricationpolymer substratethermal expansion coefficientpolarisation-independent awg deviceswavelength shift25 to 65 c621384journal article