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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 27, Iss. 21 — Nov. 1, 2009
  • pp: 4878–4883

Compact Microring Resonator With 2$\,\times\,$2 Tapered Multimode Interference Couplers

Daoxin Dai, Liu Yang, Zhen Sheng, Bo Yang, and Sailing He

Journal of Lightwave Technology, Vol. 27, Issue 21, pp. 4878-4883 (2009)


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Abstract

Compact microring resonator devices are realized by using a small SU-8 polymer strip waveguide that has an SU-8 polymer core $(n \sim {\hbox {1.573}})$, an SiO$_{2}$ buffer $(n \sim {\hbox {1.445}}),$ and an air cladding. Due to the high index contrast of the optical waveguide, a small bending radius (${\sim} {\hbox {150}}\ \mu$m) is used for the MRR. To enhance the coupling between the access optical waveguides and the microring, 2$\,\times\,$2 multimode interference couplers are used. The measured spectral response of the through port shows a high extinction ratio of over 15 dB and a 3-dB bandwidth of about 0.38nm (corresponding to a moderate $Q$-value of ${\sim} {\hbox {4500}}$).

© 2009 IEEE

Citation
Daoxin Dai, Liu Yang, Zhen Sheng, Bo Yang, and Sailing He, "Compact Microring Resonator With 2$\,\times\,$2 Tapered Multimode Interference Couplers," J. Lightwave Technol. 27, 4878-4883 (2009)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-27-21-4878

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