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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 8 — Apr. 16, 2007
  • pp: 4795–4803

Coupling in dual-core photonic bandgap fibers: theory and experiment

Z. Wang, T. Taru, T. A. Birks, J. C. Knight, Y. Liu, and J. Du  »View Author Affiliations

Optics Express, Vol. 15, Issue 8, pp. 4795-4803 (2007)

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We have theoretically and experimentally investigated dual-core photonic bandgap fibers (PBGFs), which consist of a cladding with an array of high-index rods and two cores formed by omitting two nearby rods. We find novel features in their coupling characteristics such as maxima and minima in coupling length, complete decoupling of the cores, and an inversion of the usual ordering of supermodes so that the odd supermode has the higher propagation constant. This behavior is understood by considering the field distribution in the rods between the cores.

© 2007 Optical Society of America

OCIS Codes
(060.2280) Fiber optics and optical communications : Fiber design and fabrication
(060.2400) Fiber optics and optical communications : Fiber properties

ToC Category:
Photonic Crystal Fibers

Original Manuscript: February 15, 2007
Revised Manuscript: March 28, 2007
Manuscript Accepted: April 2, 2007
Published: April 5, 2007

Z. Wang, T. Taru, T. A. Birks, J. C. Knight, Y. Liu, and J. Du, "Coupling in dual-core photonic bandgap fibers: theory and experiment," Opt. Express 15, 4795-4803 (2007)

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  1. F. Luan, A. K. George, T. D. Hedley, G. J. Pearce, D. M. Bird, J. C. Knight, and P. S. J. Russell, "All-solid photonic bandgap fiber," Opt. Lett. 29, 2369-2371 (2004). [CrossRef] [PubMed]
  2. A. Argyros, T. A. Birks, S. G. Leon-Saval, C. M. B. Cordeiro, F. Luan, and P. S. J. Russell, "Photonic bandgap with an index step of one percent," Opt. Express 13, 309-314 (2005). [CrossRef] [PubMed]
  3. G. Bouwmans, L. Bigot, Y. Quiquempois, F. Lopez, L. Provino, and M. Douay, "Fabrication and characterization of an all-solid 2D photonic bandgap fiber with a low-loss region (< 20 dB/km) around 1550 nm," Opt. Express 13, 8452-8459 (2005). [CrossRef] [PubMed]
  4. B. J. Mangan, J. C. Knight, T. A. Birks, P. S. Russell, and A. H. Greenaway, "Experimental study of dual-core photonic crystal fibre," Electron. Lett. 36, 1358-1359 (2000). [CrossRef]
  5. K. Saitoh, Y. Sato, and M. Koshiba, "Coupling characteristics of dual-core photonic crystal fiber couplers," Opt. Express 11, 3188-3195 (2003). [CrossRef] [PubMed]
  6. J. Laegsgaard, O. Bang, and A. Bjarklev, "Photonic crystal fiber design for broadband directional coupling," Opt. Lett. 29, 2473-2475 (2004). [CrossRef] [PubMed]
  7. M. Skorobogatiy, K. Saitoh, and M. Koshiba, "Transverse light guides in microstructured optical fibers," Opt. Lett. 31, 314-316 (2006). [CrossRef] [PubMed]
  8. Z. Wang, G. Y. Kai, Y. G. Liu, J. F. Liu, C. S. Zhang, T. T. Sun, C. Wang, W. G. Zhang, S. Z. Yuan, and X. Y. Dong, "Coupling and decoupling of dual-core photonic bandgap fibers," Opt. Lett. 30, 2542-2544 (2005). [CrossRef] [PubMed]
  9. C. G. Someda, "Antiresonant decoupling of parallel dielectric wave-guides," Opt. Lett. 16, 1240-1242 (1991). [CrossRef] [PubMed]
  10. S. Boscolo, M. Midrio, and C. G. Someda, "Coupling and decoupling of electromagnetic waves in parallel 2-D photonic crystal waveguides," IEEE J. Quantum Electron. 38, 47-53 (2002). [CrossRef]
  11. T. Koponen, A. Huttunen, and P. Torma, "Conditions for waveguide decoupling in square-lattice photonic crystals," J. Appl. Phys. 96, 4039-4041 (2004). [CrossRef]
  12. F. S. S. Chien, S. C. Cheng, Y. J. Hsu, and W. F. Hsieh, "Dual-band multiplexer/demultiplexer with photonic-crystal-waveguide couplers for bidirectional communications," Opt. Commun. 266, 592-597 (2006). [CrossRef]
  13. Y. Tanaka, H. Nakamura, Y. Sugimoto, N. Ikeda, K. Asakawa, and K. Inoue, "Coupling properties in a 2-D photonic crystal slab directional coupler with a triangular lattice of air holes," IEEE J. Quantum Electron 41, 76-84 (2005). [CrossRef]
  14. J. Laegsgaard, "Directional coupling in twin-core photonic bandgap fibers," Opt. Lett. 30, 3281-3283 (2005). [CrossRef]
  15. A. W. Snyder and J. D. Love, Optical Waveguide Theory (Chapman and Hall, London, 1983).
  16. B. J. Mangan, J. Arriaga, T. A. Birks, J. C. Knight, and P. St. J. Russell, "Fundamental-mode cutoff in a photonic crystal fiber with a depressed-index core," Opt. Lett. 26, 1469-1471 (2001). [CrossRef]
  17. G. J. Pearce, T. D. Hedley, and D. M. Bird, "Adaptive curvilinear coordinates in a plain-wave solution of Maxwell's equations in photonic crystals," Phys. Rev. B 71, 195108 (2005)
  18. S. G. Johnson and J. D. Joannopoulos, "Block-iterative frequency-domain methods for Maxwell's equations in a planewave basis," Opt. Express 8, 173-190 (2001). [CrossRef] [PubMed]
  19. J. Lægsgaard, "Gap formation and guided modes in photonic band gap fibres with high-inex rods," J. Opt. A: Pure Appl. Opt. 6, 798-804 (2004). [CrossRef]
  20. CUDOS MOF UTILITIES Software ©Commonwealth of Australia 2004. All rights reserved. http://www.physics.usyd.edu.au/cudos/mofsoftware/
  21. W. J. Wadsworth, N. Joly, J. C. Knight, T. A. Birks, F. Biancalana, and P. S. J. Russell, "Supercontinuum and four-wave mixing with Q-switched pulses in endlessly single-mode photonic crystal fibres," Opt. Express 12, 299-309 (2004). [CrossRef] [PubMed]

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