OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 2 — Jan. 21, 2008
  • pp: 535–548

Optical cross-connect circuit using hitless wavelength selective switch

Yuta Goebuchi, Masahiko Hisada, Tomoyuki Kato, and Yasuo Kokubun  »View Author Affiliations

Optics Express, Vol. 16, Issue 2, pp. 535-548 (2008)

View Full Text Article

Enhanced HTML    Acrobat PDF (378 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



We have proposed and demonstrated the basic elements of a full matrix optical switching circuit (cross-connect circuit) using a hitless wavelength selective switch (WSS). The cross-connect circuits are made of a multi-wavelength channel selective switch consisting of cascaded hitless WSSs, and a multi-port switch. These switching elements are realized through the individual Thermo-Optic (TO) tuning of a series-coupled microring resonator, and can switch arbitrary wavelength channels without blocking other wavelength channels during tuning. We demonstrate a four wave-length selective switch using a parallel topology of double series coupled microring resonators and a three wavelength selective switch using a parallel topology of quadruple series coupled microring resonators. Since the spectrum shape of quadruple series coupled microring is much more box-like than the double series, a high extinction ratio of 39.0–46.6 dB and low witching cross talk of 19.3–24.5 dB were achieved.

© 2008 Optical Society of America

OCIS Codes
(130.4815) Integrated optics : Optical switching devices
(130.7408) Integrated optics : Wavelength filtering devices

ToC Category:
Integrated Optics

Original Manuscript: October 22, 2007
Revised Manuscript: December 20, 2007
Manuscript Accepted: December 20, 2007
Published: January 7, 2008

Yuta Goebuchi, Masahiko Hisada, Tomoyuki Kato, and Yasuo Kokubun, "Optical cross-connect circuit using hitless wavelength selective switch," Opt. Express 16, 535-548 (2008)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. K. Suzuki, T. Mizuno,M. Oguma, T. Shibata, H. Takahashi, Y. Hibino, and A. Himeno, "Low loss fully reconfigurable wavelength-selective optical 1xN switch based on transversal filter configuration using silica-based planar lightwave circuit," IEEE Photonics Technol. Lett. 16,1480-1482 (2004). [CrossRef]
  2. S. J. Emelett and R. Soref, "Design and simulation of silicon microring optical routing switches," J. Lightwave Technol. 23,1800-1807 (2005). [CrossRef]
  3. B. E. Little, S. T. Chu, H. A. Haus, J. Foresi, and J. -P. Laine, "Microring resonator channel dropping filters," J. Lightwave Technol. 15,998-1005 (1997). [CrossRef]
  4. S. C. Hagness, D. Rafizadeh, S. T. Ho, and A. Taflove, "FDTD microcavity simulations: design and experimental realization of waveguide-coupled single-mode ring and whispering-gallery-mode diskresonators," J. Lightwave Technol. 15,2154-2165 (1997). [CrossRef]
  5. B. E. Little, S. T. Chu,W. Pan, and Y. Kokubun, "Microring resonator arrays for VLSI photonics," IEEE Photonics Technol. Lett. 12,323-325 (2000). [CrossRef]
  6. 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 Photonics Technol. Lett. 11,215-217 (1999). [CrossRef]
  7. 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 Photonics Technol. Lett. 11,691-693 (1999). [CrossRef]
  8. Y. Kokubun, "Vertically coupled microring resonator filter for integrated add/drop node," IEICE Trans. Electron. 88-C,349-362 (2005). [CrossRef]
  9. D. V. Tishinin, P. D. Dapkus, A. E. Bond, I. Kim, C. K. Lin, and J. O’brien, "Vertical resonant couplers with precise coupling efficiency control fabricated by wafer bonding," IEEE Photonics Technol. Lett. 11,1003-1005 (1999). [CrossRef]
  10. S. T. Chu, B. E. Little, V. Van, J. V. Hryniewicz, P. P. Absil, F. G. Johnson, D. Gill, O. King, F. Seiferth, M. Trakalo, and J. Shanton, "Compact full C-band tunable filters for 50 GHz channel spacing based on high order micro-ring resonators," in Optical Fiber Communication Conference, Technical Digest (CD) (Optical Society of America, 2004), paper PD9. http://www.opticsinfobase.org/abstract.cfm?URI=OFC-2004-PD9.
  11. Y. Yanagase, S. Yamagata, and Y. Kokubun, "Wavelength tunable polymer microring resonator filter with 9.4nm tuning range," Electron. Lett. 39,922-924 (2003). [CrossRef]
  12. S. Yamagata, Y. Yanagase, and Y. Kokubun, "Wide-range tunable microring resonator filter by thermo-optic effect in polymer waveguide," Jpn. J. Appl. Phys. 43,5766-5770 (2004). [CrossRef]
  13. S. Yamagata, T. Kato, and Y. Kokubun, "Non-blocking wavelength channel switch using TO effect of doubles series coupled microring resonator," Electron. Lett. 41,593-595 (2005). [CrossRef]
  14. Y. Goebuchi, T. Kato, and Y. Kokubun, "Fast and stable wavelength selective switch using double-series coupled dielectric microring resonator," IEEE Photonics Technol. Lett. 18,538-540 (2006). [CrossRef]
  15. Y. Goebuchi, T. Kato, and Y. Kokubun, "Multiwavelength and multiport hitless wavelength-selective switch using series-coupled microring resonators," IEEE Photonics Technol. Lett. 19,671-673 (2007). [CrossRef]
  16. Y. Hatakeyama, T. Hanai, S. Suzuki, and Y. Kokubun, "Loss-less multilevel crossing of busline waveguide in vertically coupled microring resonator filter," IEEE Photonics Technol. Lett. 16,473-475 (2004). [CrossRef]
  17. A. Agarwal, P. Toliver, R. Menendez, S. Etemad, J. Jackel, J. Young, T. Banwell, B. E. Little, S. T. Chu,Wei Chen, Wenlu Chen, J. Hryniewicz, F. Johnson, D. Gill, O. King, R. Davidson, K. Donovan, and P. J. Delfyett, "Fully programmable ring-resonator-based integrated photonic circuit for phase coherent applications," J. Lightwave Technol. 24,77-87 (2006). [CrossRef]
  18. S. T. Chu, B. E. Little, W. Pan, T. Kaneko, and Y. Kokubun, "Second-order filter response from parallel coupled glass microring resonators," IEEE Photonics Technol. Lett. 11,1426-1428 (1999). [CrossRef]
  19. M. Ogata, Y. Yoda, S. Suzuki, and Y. Kokubun, "Ultracompact vertically coupled microring resonator with buried vacuum cladding structure," IEEE Photonics Technol. Lett. 17,103-105 (2005). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited