The Transactions of the Korean Institute of Electrical Engineers P (전기학회논문지P)

The Korean Institute of Electrical Engineers (대한전기학회)
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Triangular Ring Resonator Without Direct Coupling Between Two Access Waveguides of Multimode Interference Coupler

다중모드 결합기의 입출력 광도파로 사이에 광결합이 없는 삼각형 링 공진기

  • Published : 2010.03.01
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Abstract

We have investigated the properties of the novel triangular ring resonator with the total internal reflection mirrors and the semiconductor optical amplifier for photonic integrated circuits (PIC). A novel triangular resonators containing active and passive sections are fabricated and characterized with various multimode interference (MMI) lengths. The optimum MMI length and width turn out to be 108 and 9 ${\mu}m$, respectively. A free spectral range of approximately 228 GHz is observed near 1558 nm along with an on-off ratio of 9 dB. The proposed triangular resonator has a good advantage to remove the direct coupling between the two access waveguides of the MMI coupler. Hence, such resonators can be directly integrated with other devices making compact and highly functional PIC possible.

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References

  1. B.E. Little, S.T. Chu, W. Pan, D. Ripin, T. Kaneko, Y. Kokubun, and E. Ippen, "Vertically coupled glass microring resonator channel dropping filters," IEEE Photon. Technol. Lett., vol. 11, pp. 215-217, Feb. 1999 https://doi.org/10.1109/68.740708
  2. S.T. Chu, B.E. Little, W. Pan, T. Kaneko, S. Sato, and Y. Kokubun, "An eight-channel add-drop filter using vertically coupled microring resonators over a cross grid," IEEE Photon. Technol. Lett., vol. 11, pp. 691-693, June. 1999 https://doi.org/10.1109/68.766787
  3. D.G. Kim, Y.W. Choi, "Wide tuning characteristics of double-ring coupled lasers", Optics Communications, vol. 282, pp. 2516-2523, July. 2009 https://doi.org/10.1016/j.optcom.2009.03.041
  4. R. Grover, T.A. Ibrahim, T.N. Ding, Y. Leng, L.C. Kuo, S. Kanakaraju, K. Amarnath, L.C. Calhoun, and P.T. Ho," Laterally coupled InP-based single-mode microracetrack notch filter," IEEE Photon. Technol. Lett., vol.15, no.8, pp.1082-4, Aug. 2003. https://doi.org/10.1109/LPT.2003.815335
  5. S.J. Choi, K. Djordjev, P.D. Dapkus, W. Lin, G. Griffel, R. Menna, and J. Connolly, "Microring resonators vertically coupled to buried heterostructure bus waveguides," IEEE Photon. Technol. Lett., vol.16, no.3, pp.828-30. March 2004. https://doi.org/10.1109/LPT.2004.823704
  6. C. Ozturk, Y.J. Chiu, and N. Dagli, "Polymer/compound semiconductor hybrid micro resonators with very wide free spectral range", IEEE/LEOS 2002 Annual Meeting, Paper ThN-2, Glasgow, UK, Nov. 11- 14, 2002.
  7. D.G. Kim, C. Ozturk, J.H. Shin, J.C. Yi, and N. Dagli, "Self-aligned total internal reflection mirrors with very low loss," Integrated Photonics Research Conference Proceedings, IPR2004, IThG5, San Francisco, CA, Jun. 30-Jul. 2 2004.
  8. O. Bryngdahl, "Image formation using self-imaging techniques," J. Opt. Soc. Amer., vol. 63, no. 4, pp. 416-418, 1973 https://doi.org/10.1364/JOSA.63.000416
  9. L.B. Soldano and E.C.M. Pennings, "Optical multi-mode interference devices based on self-imaging: Principles and Applications," J. Lightwave Technol., vol.13, pp. 615-627, April. 1995 https://doi.org/10.1109/50.372474
  10. L.H. Spiekman, Y.S. Oei, E.G. Metaal, F.H. Groen, I. Moerman, and M.K. Smit, "Extremely Small Multimode Interference Couplers and Ultrashort Bend on InP by Deep Eetching," IEEE Photon. Technol. Lett., vol. 6, pp. 1008-1010, Aug. 1994 https://doi.org/10.1109/68.313078
  11. D.G. Kim, Y.W. Choi, J.C. Yi, and N. Dagli, "Compact Rectangular Ring Resonator with Optimum Multimode Interference", Jpn. J. Appl. Phys, vol. 46, no. 42, pp. L1019-L1021, Oct. 2007 https://doi.org/10.1143/JJAP.46.L1019