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Optics Express

Optics Express

  • Editor: Michael Duncan
  • Vol. 13, Iss. 1 — Jan. 10, 2005
  • pp: 32–37

Integrated electro-optic switch in liquid crystals

Andrea Fratalocchi, Rita Asquini, and Gaetano Assanto  »View Author Affiliations

Optics Express, Vol. 13, Issue 1, pp. 32-37 (2005)

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We demonstrate a compact, low-power and broadband electro-optic switch in a simple waveguide geometry with undoped nematic liquid crystals. We experimentally achieve near infrared switching and signal routing with voltage modulations as low as 0.21V and a device length of 0.16mm.

© 2005 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(160.3710) Materials : Liquid crystals

ToC Category:
Research Papers

Original Manuscript: November 24, 2004
Revised Manuscript: December 17, 2004
Manuscript Accepted: December 18, 2004
Published: January 10, 2005

Andrea Fratalocchi, Rita Asquini, and Gaetano Assanto, "Integrated electro-optic switch in liquid crystals," Opt. Express 13, 32-37 (2005)

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  1. G. I.  Papadimitriou, C.  Papazoglou, A. S.  Pomportsis, “Optical switching: switch fabrics, techniques, and architectures,” J. Lightwave Technol. 21, 384–405 (2003). [CrossRef]
  2. E. L.  Wooten, K. M.  Kissa, A.  Yi-Yan, E. J.  Murphy, D. A.  Lafaw, P. F.  Hallemeier, D. R.  Maack, D. V.  Attanasio, D. J.  Fritz, G. J.  McBrien, D. E  Bossi, “A review of lithium niobate modulator for fiber-optic communication system,” IEEE J. Sel. Top. Quantum Electron. 6, 69–82 (2000). [CrossRef]
  3. A.  Pattavina, M.  Martinelli, G.  Maier, P.  Boffi, “Techniques and technologies towards all-optical switching,” IEEE Photon. Technol. Lett. 16, 650–652 (2004).
  4. A.  d’Alessandro, R.  Asquini, “Liquid crystal devices for photonic switching applications: state of the art and future developments,” Mol. Cryst. Liq. Cryst. 398, 207–221 (2003). [CrossRef]
  5. J. L.  de Bougrenet, “Engineering liquid crystals for optimal uses in optical communication systems,” Liq. Cryst. 31, 241–269 (2004). [CrossRef]
  6. J.  Qui, H.  Xianyu, J.  Liang, G. P.  Crawford, “Active U-Turn electrooptic switch formed in patterned holographic polymer-dispersed,” Liq. Cryst. 31, 241–269 (2004).
  7. B.  Fracasso, J. L.  de Bougrenet, M.  Razzak, C.  Uche, “Design and performance of a versatile holographic liquid-crystal wavelength-selective optical switch,” IEEE J. Lightwave Technol. 21, 2405–2411 (2003). [CrossRef]
  8. J. S.  Patel, Y.  Silberberg, “Liquid crystal and grating-based multiple-wavelength cross-connect switch,” IEEE Photon. Technol. Lett. 7, 514–516 (1995). [CrossRef]
  9. M. J.  Huang, R. P.  Pan, C. R.  Sheu, Y. P.  Lan, Y. F.  Lai, C. L.  Pan, “Multimode optical demultiplexer for DWDM with liquid crystal enabler functionalities,” IEEE Photon. Technol. Lett. 16, 2254–2256 (2004). [CrossRef]
  10. C.  Vasquez, J. M.  Pena, S. E.  Vargas, A. L.  Aranda, I.  Perez, “Optical router for optical fiber sensor networks based on a liquid crystal cell,” IEEE Sensor Journ. 3, 513–518 (2003). [CrossRef]
  11. I. C.  Khoo, Liquid crystals: physical properties and nonlinear optical phenomena (Wiley and Sons, New York, 1995).
  12. M.  Kobayashi, H.  Terui, M.  Kawachi, J.  Noda, “2×2 optical waveguide matrix switch using nematic liquid crystal,” IEEE J. Quantum Electron. QE-18, 1603–1609 (1982). [CrossRef]
  13. J. P.  Sheridan, J. M.  Schnur, T. G.  Giallorenzi, “Electro-optic switching in low loss liquid crystal waveguides,” Appl. Phys. Lett. 22, 560–562 (1973). [CrossRef]
  14. R.  Asquini, A.  d’Alessandro, “BPM analysis of an integrated optical switch using polymeric optical waveguides and SSFLC at 1.55µ m,” Mol. Cryst. Liq. Cryst. 375, 243–247 (2002). [CrossRef]
  15. A.  d’Alessandro, R.  Asquini, F.  Menichella, C.  Ciminelli, “Realisation and characterisation of a ferroelectric liquid crystal bistable optical switch,” Mol. Cryst. Liq. Cryst. 372, 353–363 (2001). [CrossRef]
  16. L.  Sirleto, G.  Coppola, G.  Breglio, “Optical multimode interference router based on a liquid crystal waveguide,” J. Opt. A: Pure Appl. Opt. 5, S298–S304 (2003). [CrossRef]
  17. F.  Simoni, Nonlinear optical properties of liquid crystals (World Scientific, Singapore, 1997).
  18. P. G.  de Gennes, J.  Prost, The physics of liquid crystals (Clarendon Press, Oxford, 2001).
  19. D. A.  Dunmur, A.  Fukuda, G. R.  Luckhurst, Liquid crystals: nematics (INSPEC, London 2001).

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