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Compact Microracetrack Resonator Devices Based on Small SU-8 Polymer Strip Waveguides

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5 Author(s)
Daoxin Dai ; Centre for Opt. & Electromagn. Res., Zhejiang Univ., Hangzhou ; Bo Yang ; Liu Yang ; Zhen Sheng
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Compact microracetrack resonator (MRR) devices are presented with small SU-8 polymer strip waveguides. The SU-8 strip waveguide has an SU-8 polymer core (n~1.573) , a SiO2 buffer (n~1.445), and an air cladding. The fabricated straight waveguide has a low propagation loss of about 0.1 dB/mm. With such a high index-contrast optical waveguide, a compact MRR with a small bending radius (~150 mum) are designed and fabricated. The measured spectral responses of the through/drop ports show a Q-factor of 8000.

Published in:

Photonics Technology Letters, IEEE  (Volume:21 ,  Issue: 4 )