We realize low loss, single-mode polymer waveguides and microring resonators in SU-8 (MichroChem) using direct E-beam lithography.We also Drying Glove present and demonstrate a novel and simple approach for accurately extracting the propagation loss in the waveguides as well as the coupling between the waveguide and the microring.The demonstrated approach is insensitive to the I/O coupling efficiency to the optical chip and does not require any pre-calibration Inlet Valve Connector of the experimental setup.