System Applications of Large-Scale Optical Switch Matrices Using Silica-Based Planar Lightwave Circuits

  • A. Himeno
  • T. Kominato
  • M. Kawachi
  • K. Okamoto


Space-division optical switches will be indispensable for future fiber-optic communication systems such as fiber-optic subscriber-line concentrators, photonic inter-module connectors, and protection switches. This paper reports recent progress on both silica-based thermo-optic switches and related system application experiments.


Hydrolysis Lithium Attenuation Coupler Kato 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    T. Matsunaga, M. Okuno, and K. Yukimastu, “Large-scale space-division switching system using silica-based 8x8 matrix switches,” in Proc. OEC’92 Makuhari, Japan, pp. 256–257, Jul. 1992.Google Scholar
  2. [2]
    T. Ito, A. Himeno, K. Takada, and K. Kato, “Photonic inter-module connectorusing silica-based optical switches,” in Proc. GLOBECOM’92, Orlando, Fla., pp. 187–191, 1992.Google Scholar
  3. [3]
    A. Himeno, R. Nagase, T. Ito, K. Kato, and M. Okuno, “Photonic inter-module connector using 8x8 optical switches for near-future electronic switching systems,” IEICETrans. Commun., vol.E77 B, no. 2, pp. 155–162, 1994.Google Scholar
  4. [4]
    M. Kawachi, “Silica waveguides on silicon and their application to integrated-optic components,” Optical and Quantum Electronics, 22, pp. 391–416, 1992.Google Scholar
  5. [5]
    M. Kawachi, M. Okuno, K. Kato, K. Katoh, Y. Ohmori, and A. Himeno “Silica-based optical matrix switch with intersecting Mach-Zehnder waveguides for larger fabrication tolerances,” in Proc. OFC/IOOC’93, San Jose, CA, paper TuH4, 1994.Google Scholar
  6. [6]
    M. Okuno, K. Kato, Y. Ohmori, and T. Matsunaga, “Improved 8x8 integrated optic matrix switch using silica-based planar lightwave circuit,” in Proc.OEC’92, Makuhari, Japan, pp. 264–265, 1992.Google Scholar
  7. [7]
    K. Inoue, K. Katoh, and M. Kawachi, “Polarization sensitivity of a silica waveguide thermo-optic phase shifter for planar lightwave circuits,” IEEE Photon. Technol. Lett., vol. 3, no. 1, pp. 36–38, Jan. 1992.Google Scholar
  8. [8]
    K. Takada, K. Okamoto, and J. Nöda, “ New fiber-optic depolarizer,” IEEE J. Lightwave Tech., vol. LT-4, no. 2, pp. 213–219, Feb. 1986.Google Scholar
  9. [9]
    R. Nagase, A. Himeno, M. Okuno, K. Kato, K. Yukimatsu, and M. Kawachi, “Silica-based 8x8 optical matrix switch module with hybrid integrated driving circuits and its system application, ” IEEE J. Lightwave Technol, vol. 12, pp. 1631–1639, Sep. 1994.Google Scholar
  10. [10]
    M. Okuno, K. Katoh, S. Suzuki, Y. Ohmori, and A. Himeno, “Strictly nonblocking 16x16 matrix switch using silica-based planar lightwave circuits,” in Tech. Dig. ECOC’94 (Firenze, Italy), vol. 4, pp. 83–86, Sep. 1994.Google Scholar
  11. [11]
    A. Himeno, M. Okuno, Y.Ohmori, and M. Kawachi, “High-extinction ratio 8x8 thermo-optic matrix switch using silica-based planar lightwave circuits,” in Proc. 996 Topical Meeting on Photonics in Switching, Sendai, Japan, 1996, paper PThB3.Google Scholar
  12. [12]
    R. Nagase, A. Himeno, K. Kato, and M. Okuno, “Silica-based 8x8 optical-matrix switch module with hybrid integrated driving circuits,” in Proc. European Conference on Optical Communication, Montreux, Switzerland, vol. 2, pp. 17–20, 1993.Google Scholar
  13. [13]
    K. Asatani, K. R. Harrison, and R. Ballart, “CCITT standardization of network interface of synchronous digital hierarchy,” IEEE Communications Magazine, vol. 28, no.8, pp. 15–20, Aug. 1990.Google Scholar
  14. [14]
    T. Miya, N. Takato, Y. Ohmori, M. Yamaguchi, and N. Tornita, “Arrayedwaveguide-type wwavelength insensitive coupler for FTTH network,” in Tech. Dig. OFC’92, San Jose, USA, pp. 264, Feb. 1992.Google Scholar

Copyright information

© Springer-Verlag London 1997

Authors and Affiliations

  • A. Himeno
    • 1
  • T. Kominato
    • 1
  • M. Kawachi
    • 1
  • K. Okamoto
    • 1
  1. 1.NTT Opto-Electronics LaboratoriesIbaraki-kenJapan

Personalised recommendations