Polymer waveguides around the 800nm are still relatively unexplored. Our aim is to advance the state-of-the-art for polymer photonics in this key quantum technology application domain. Moreover, these platforms demand cryogenic temperatures and between the polymers, SU-8 is one that can work at these temperatures due to low losses and low volumetric shrinkage. We report the design and fabrication of resonators (Racetracks and MicroRing Resonators, MRR) that allow us to intuit the changes in the refractive index of the Su-8 at room and at cryogenic temperatures.
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