A large free spectral range of 74.92 GHz in comb peaks generated by SU-8 polymer micro-ring resonators: simulation and experiment

• Main Authors: Ariannejad, Mohammad Mahdi, Amiri, Iraj Sadegh, Ahmad, Harith, Yupapin, Preecha Promphan
• Format: Article
• Published: IOP Publishing 2018
• Subjects: Q Science (General); QC Physics
• Online Access: http://eprints.um.edu.my/22451/; https://doi.org/10.1088/1555-6611/aadd25

The feasibility of integrated SU-8 polymeric optical waveguides on a silicon platform was demonstrated experimentally and supported by simulation. Micro-ring resonator (MRR) configurations were designed and fabricated using SU-8 polymer. Simulation is carried out using the finite-difference time-domain method to improve the design. Both the simulation and experimental results confirm that SU-8 can be successfully used in the optical MRR. Passive MMI-coupled SU-8 single coupler and double coupler with a free spectral range of 74.92 GHz is achieved practically and corresponds with the simulation result. Moreover, other important parameters such as the full width at half maximum, Q factor and finesse are calculated from the simulation and practical results to support the feasibility of the SU-8 polymer MRR.