Abstract

We present here a theoretical analysis and the experimental evaluation of a wavelength-selective optical space switch based on three-dimensional beam steering using the diffractive liquid-crystal (LC) technology. Here,many advantages are combined within the same device. First, the motionless operation of diffractive LC devices provides stable, accurate, and reproductible switching maps, as well as a very simple addressing and supervision scheme. Then, it is shown both qualitatively and quantitatively that diffractive (or holographic) structures enable the extension of the device functionalities to multicast switching and variable-wavelength-band selection. This represents a first step toward compact optical routing nodes and merging wavelength-and space-routing capabilities.

© 2003 IEEE

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  1. P. Berthelé, et al. "Design and characterization of a LC SLM for a polarization-insensitive optical space-switch", Appl. Opt., vol. 37, no. 23, pp. 5461 -5468, 1998.
  2. N. Wolffer, et al. "8 × 8 holographic liquid crystal switch", in Proc. ECOC 2000, Sept. 2000, pp. 275-277.
  3. L. Y. Lin, et al. "MEMS for optical networking: Current status and future prospects", in Proc. ECOC 2000, Sept. 2000, p. 91.
  4. W. A. Crossland, et al. "Beam steering optical switches using LCOS: The ROSES demonstrator", in Inst. Elect. Eng. Electronics Communications Meeting, London, U.K., Mar. 17 2000.
  5. U. Krishnamoorthy, K. Li, K. Yu, D. Lee, J. P. Heritage and O. Solgaard, "Dual-mode micromirrors for optical phased array applications", Sens. Actuators: A, Phys., vol. 97-98C, pp. 22-26, May 2002.
  6. J. W. Goodman and A. M. Silvestri, "Some effects of Fourier-domain phase quantization", IBM J. Res. Develop., vol. 14, no. 9, pp. 478-484, 1970.
  7. B. Fracasso, et al. "Performance assessment of a liquid crystal multichannel photonic space-switch", in Photonics in Switching 2001 Tech. Dig. , Monterey, CA, June 2001, pp. 24-26.
  8. Y. A. Peter, "Micro-optical fiber switch for a large number of interconnects", PhD dissertation, Institut de Microtechnique, Université de Neuchâtel, Neuchâtel, Switzerland, Jan. 2001.
  9. J. P. Laude, "N × N wavelength router, optical routing method and associated communication network", U.S. Patent 5.838.848, Nov. 17, 1998.
  10. C. F. Lam, et al. "Programmable optical multicasting in a region: Metro area network using a wavelength selective optical cross-connect", in Proc. ECOC 01, Amsterdam, The Netherlands,Oct. 2001, pp. 614-615.
  11. J. K. Rhee, et al. "Variable pass-band optical add-drop multiplexer using wavelength selective switch", in Proc. ECOC'01, Amsterdam, The Netherlands,Oct. 2001, pp. 550 -551.
  12. D. M. Marom, et al. "Wavelength-selective 1 × 4 switch for 128 WDM channels at 50 Ghz spacing", presented at the OFC2002, Anaheim, CA, Mar. 17-22, 2002.
  13. J. P. Laude and S. Louis, "A new method for broadening and flattening the spectral shape of the transmission channels of grating wavelength division multiplexers (WDM) and routers", in OECC'98, Tech. Dig., Chiba, Japan,July 1998, pp. 522-532.

Other

P. Berthelé, et al. "Design and characterization of a LC SLM for a polarization-insensitive optical space-switch", Appl. Opt., vol. 37, no. 23, pp. 5461 -5468, 1998.

N. Wolffer, et al. "8 × 8 holographic liquid crystal switch", in Proc. ECOC 2000, Sept. 2000, pp. 275-277.

L. Y. Lin, et al. "MEMS for optical networking: Current status and future prospects", in Proc. ECOC 2000, Sept. 2000, p. 91.

W. A. Crossland, et al. "Beam steering optical switches using LCOS: The ROSES demonstrator", in Inst. Elect. Eng. Electronics Communications Meeting, London, U.K., Mar. 17 2000.

U. Krishnamoorthy, K. Li, K. Yu, D. Lee, J. P. Heritage and O. Solgaard, "Dual-mode micromirrors for optical phased array applications", Sens. Actuators: A, Phys., vol. 97-98C, pp. 22-26, May 2002.

J. W. Goodman and A. M. Silvestri, "Some effects of Fourier-domain phase quantization", IBM J. Res. Develop., vol. 14, no. 9, pp. 478-484, 1970.

B. Fracasso, et al. "Performance assessment of a liquid crystal multichannel photonic space-switch", in Photonics in Switching 2001 Tech. Dig. , Monterey, CA, June 2001, pp. 24-26.

Y. A. Peter, "Micro-optical fiber switch for a large number of interconnects", PhD dissertation, Institut de Microtechnique, Université de Neuchâtel, Neuchâtel, Switzerland, Jan. 2001.

J. P. Laude, "N × N wavelength router, optical routing method and associated communication network", U.S. Patent 5.838.848, Nov. 17, 1998.

C. F. Lam, et al. "Programmable optical multicasting in a region: Metro area network using a wavelength selective optical cross-connect", in Proc. ECOC 01, Amsterdam, The Netherlands,Oct. 2001, pp. 614-615.

J. K. Rhee, et al. "Variable pass-band optical add-drop multiplexer using wavelength selective switch", in Proc. ECOC'01, Amsterdam, The Netherlands,Oct. 2001, pp. 550 -551.

D. M. Marom, et al. "Wavelength-selective 1 × 4 switch for 128 WDM channels at 50 Ghz spacing", presented at the OFC2002, Anaheim, CA, Mar. 17-22, 2002.

J. P. Laude and S. Louis, "A new method for broadening and flattening the spectral shape of the transmission channels of grating wavelength division multiplexers (WDM) and routers", in OECC'98, Tech. Dig., Chiba, Japan,July 1998, pp. 522-532.

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