Ultra-compact liquid crystal dual core photonic crystal fibre multiplexer–demultiplexer

Mohammad Y. Azab; Mohamed Farhat O. Hameed; Somia M. El-Hefnawy; Salah S.A. Obayya

Ultra-compact liquid crystal dual core photonic crystal fibre multiplexer–demultiplexer

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Author(s): Mohammad Y. Azab ¹ ; Mohamed Farhat O. Hameed ^{1, 2} ; Somia M. El-Hefnawy ¹ ; Salah S.A. Obayya ²
- Affiliations: 1: Mathematics and Engineering Physics Department, Faculty of Engineering, Mansoura University, Mansoura 35516, Egypt ;
  2: Centre for Photonics and Smart Materials, Zewail City of Science and Technology, Sheikh Zayed District, 6th of October City, Giza, Egypt
Source: Volume 10, Issue 1, February 2016, p. 21 – 27
DOI: 10.1049/iet-opt.2015.0009 , Print ISSN 1751-8768, Online ISSN 1751-8776

Received 21/01/2015, Accepted 08/06/2015, Revised 23/04/2015, Published 01/02/2016

In this study, the authors propose a novel design of ultra-compact multiplexer–demultiplexer (MUX–DEMUX) based on silica photonic crystal fibre coupler. The suggested design has two large holes infiltrated with nematic liquid crystal of type E7. The reported MUX–DEMUX has short device length of 436 µm with low crosstalk better than −20 dB with bandwidths of 35 and 10 nm around operating wavelength of 1.3 and 1.55 μm, respectively. The simulation results are obtained using full-vectorial finite-difference method together with full-vectorial beam propagation method.

References

1. 1)
  - 31. Li, J., Wu, S.T., Brugioni, S., Meucci, R., Faetti, S.: ‘Infrared refractive indices of liquid crystals’, J. Appl. Phys., 2005, 97, (7), pp. 073501-1–073501-5.
2. 2)
  - 35. Wang, F., Yuan, W., Hansen, O., Bang, O.: ‘Selective filling of photonic crystal fibers using focused ion beam milled microchannels’, Opt. Express, 2011, 19, (18), pp. 17585–17590 (doi: 10.1364/OE.19.017585).
3. 3)
  - 44. Hu, C., Whinnery, J.R.: ‘Losses of a nematic liquid-crystal optical waveguide’, J. Opt. Soc. Am., 1974, 64, pp. 1424–1432 (doi: 10.1364/JOSA.64.001424).
4. 4)
  - 30. Haakestad, M.W., Alkeskjold, T.T., Nielsen, M., et al: ‘Electrically tunable photonic bandgap guidance in a liquid-crystal-filled photonic crystal fiber’, IEEE Photonics Technol. Lett., 2005, 17, (4), pp. 819–821 (doi: 10.1109/LPT.2004.842793).
5. 5)
  - 45. Green, M., Madden, S.J.: ‘Low loss nematic liquid crystal cored fiber waveguides’, Appl. Opt., 1989, 28, pp. 5202–5203 (doi: 10.1364/AO.28.005202).
6. 6)
  - 34. Lei, W., Alkeskjold, T.T., Bjarklev, A.: ‘Compact design of an electrically tunable and rotatable polarizer based on a liquid crystal photonic bandgap fiber’, IEEE Photon. Technol. Lett., 2009, 21, (21), pp. 1633–1635 (doi: 10.1109/LPT.2009.2028156).
7. 7)
  - 18. Sun, B., Chen, M., Zhang, Y., Zhou, J.: ‘Polarization-dependent coupling characteristics of metal-wire filled dual-core photonic crystal fiber’, Opt. Quantum Electron., 2015, 47, pp. 441–451 (doi: 10.1007/s11082-014-9926-y).
8. 8)
  - 9. Zhang, L., Yang, C.: ‘Polarization-dependent coupling in twin-core photonic crystal fibers’, J. Lightwave Technol., 2004, 22, pp. 1367–1373 (doi: 10.1109/JLT.2004.825356).
9. 9)
  - 15. Koohi-Kamalia, F., Ebnali-Heidarib, M., Moravvej-Farshic, M.K.: ‘Designing a dual-core photonic crystal fiber coupler by means of microfluidic infiltration’, Int. J. Opt. Photonics, 2012, 6, (2), pp. 83–96.
10. 10)
  - 17. Li, X., Sun, B., Yu, Y., He, K.: ‘Controllable wavelength-selective coupling of bending dual-core photonic crystal fiber’. Int. Symp. on Photonics and Optoelectronics, 2014, vol. 92331.
11. 11)
  - 28. Xiao, J., Sun, X.: ‘A modified full-vectorial finite-difference beam propagation method based on H-fields for optical waveguides with step-index profiles’, Opt. Commun., 2006, 266, (2), pp. 505–511 (doi: 10.1016/j.optcom.2006.05.027).
12. 12)
  - 42. Huang, Y., Xu, Y., Yariv, A.: ‘Fabrication of functional microstructured optical fibers through selective filling technique’, Appl. Phys. Lett., 2004, 85, pp. 5182–5184 (doi: 10.1063/1.1828593).
13. 13)
  - 40. Woliñski, T.R., Czapla, A., Ertman, S., et al: ‘Tunable highly birefringent solid-core photonic liquid crystal fibers’, Opt. Quantum Electron., 2007, 39, pp. 1021–1032 (doi: 10.1007/s11082-007-9127-z).
14. 14)
  - 41. Vieweg, M., Gissibl, T., Pricking, S., et al: ‘Ultrafast nonlinear optofluidics in selectively liquid-filled photonic crystal ﬁbers’, Opt. Express, 2010, 18, pp. 25232–25240 (doi: 10.1364/OE.18.025232).
15. 15)
  - 11. Hameed, M.F.O., Obayya, S.S.A., Wiltshire, R.J.: ‘Multiplexer–demultiplexer based on nematic liquid crystal photonic crystal fiber coupler’, J. Opt. Quantum Electron., 2009, 41, (4), pp. 315–326 (doi: 10.1007/s11082-009-9334-x).
16. 16)
  - 1. Benabid, F.: ‘Hollow-core photonic band gap fiber: new light guidance for new science and technology’, Philos. Trans. R. Soc., 2006, 364, pp. 3439–3462 (doi: 10.1098/rsta.2006.1908).
17. 17)
  - 32. Acharya, B.R., Baldwin, K.W., Rogers, J.A., Huang, C.C., Pindak, R.: ‘In-fiber nematic liquid crystal optical modulator based on in-plane switching with microsecond response time’, Appl. Phys. Lett., 2002, 81, (27), pp. 5243–5245 (doi: 10.1063/1.1532532).
18. 18)
  - 43. Scolari, L.: ‘Liquid crystals in photonic crystal ﬁbers: fabrication, characterization and devices’. PhD thesis, Department of Photonics Engineering, Technical University of Denmark, 2009.
19. 19)
  - 7. Florous, N., Saitoh, K., Koshiba, M.: ‘A novel approach for designing photonic crystal fiber splitters with polarization-independent propagation characteristics’, Opt. Express, 2005, 13, pp. 7365–7373 (doi: 10.1364/OPEX.13.007365).
20. 20)
  - 25. Obayya, S.S.A., AzizurRahman, B.M., El-Mikati, H.A.: ‘New full vectorial numerically efficient propagation algorithm based on the finite element method’, J. Lightwave Technol., 2000, 18, (3), pp. 409–415 (doi: 10.1109/50.827514).
21. 21)
  - 4. Knight, J.C., Birks, T.A., Cregan, R.F., Russell, P.St.J., Sandro, J.-P.de.: ‘Large mode area photonic crystal fiber’, Electron. Lett., 1998, 34, pp. 1347–1348 (doi: 10.1049/el:19980965).
22. 22)
  - 21. Somasiri, N., Rahman, B.M.A., Obayya, S.S.A.: ‘Fabrication tolerance study of a compact passive polarization rotator’, J. Lightwave Technol., 2002, 20, (4), pp. 751–757 (doi: 10.1109/50.996600).
23. 23)
  - 19. Campbell, S., McPhedran, R.C., Martijn de Sterke, C., Botten, L.C.: ‘Differential multipole method for microstructure optical fibers’, J. Opt. Soc. Am. B, 2004, 21, (11), pp. 1919–1928 (doi: 10.1364/JOSAB.21.001919).
24. 24)
  - 16. Debbal, M., Chikh-Bled, M.: ‘Coupling mode of dual-core microstructured fibers’, J. Electr. Electron. Eng., 2014, 7, (2), pp. 9–12.
25. 25)
  - 12. Hameed, M.F.O., Obayya, S.S.A., Begain, K.A.l., Nasr, A.M.: ‘Coupling characteristics of a soft glass nematic liquid crystal photonic crystal fibre coupler’, IET Optoelectron., 2009, 3, (6), pp. 264–273 (doi: 10.1049/iet-opt.2009.0033).
26. 26)
  - 5. Mangan, B.J., Knight, J.C., Birks, T.A., Russell, P.St.J., Greenaway, A.H.: ‘Experimental study of dual core photonic crystal fiber’, Electron. Lett., 2000, 36, pp. 1358–1359 (doi: 10.1049/el:20000979).
27. 27)
  - 36. Hu, D.J.J., Lim, J.L., Cui, Y., et al: ‘Fabrication and characterization of a highly temperature sensitive device based on nematic liquid crystal-filled photonic crystal fiber’, IEEE Photonics J., 2012, 4, pp. 1248–1255 (doi: 10.1109/JPHOT.2012.2204400).
28. 28)
  - 37. Knight, J.C., Birks, T.A., Russell, P.St.J., Atkin, D.M.: ‘All-silica single-mode optical fiber with photonic crystal cladding’, Opt. Lett., 1996, 21, pp. 1547–1549 (doi: 10.1364/OL.21.001547).
29. 29)
  - 14. Li, P., Zhao, J.: ‘Polarization-dependent coupling in gold-filled dual-core photonic crystal fibers’, Opt. Express, 2013, 21, (5), pp. 5232–5238 (doi: 10.1364/OE.21.005232).
30. 30)
  - 33. Fang, D., Yan, Q.L., Shin, T.W.: ‘Electrically tunable liquid-crystal photonic crystal fiber’, Appl. Phys. Lett., 2004, 85, (12), pp. 2181–2183 (doi: 10.1063/1.1796533).
31. 31)
  - 6. Saitoh, K., Sato, Y., Koshiba, M.: ‘Coupling characteristics of dual-core photonic crystal fiber couplers’, Opt. Express, 2003, 11, pp. 3188–3195 (doi: 10.1364/OE.11.003188).
32. 32)
  - 39. Woliñski, T.R., Szaniawska, K., Bondarczuk, K., et al: ‘Propagation properties of photonic crystal fibers filled with nematic liquid crystals’, Opto-Electron. Rev., 2005, 13, (2), pp. 177–182.
33. 33)
  - 8. Florous, N.J., Saitoh, K., Koshiba, M.: ‘Synthesis of polarization-independent splitters based on highly birefringent dual-core photonic crystal fiber platforms’, Photonics Technol. Lett., 2006, 18, pp. 1231–1233 (doi: 10.1109/LPT.2006.875335).
34. 34)
  - 3. Gander, M.J., McBride, R., Jones, J.D.C., et al: ‘Experimental measurement of group velocity in photonic crystal fiber’, Electron. Lett., 1998, 35, pp. 63–64 (doi: 10.1049/el:19990055).
35. 35)
  - 10. Chen, M.Y., Zhou, J.: ‘Polarization-independent splitter based on all-solid silica-based photonic-crystal fibers’, J. Lightwave Technol., 2006, 24, pp. 5082–5086 (doi: 10.1109/JLT.2006.885247).
36. 36)
  - 2. Birks, T.A., Knight, J.C., Russell, P.St.J.: ‘Endlessly single-mode photonic crystal fibre’, Opt. Lett., 1997, 22, pp. 961–963 (doi: 10.1364/OL.22.000961).
37. 37)
  - 20. Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V., El-Mikati, H.A.: ‘Full vectorial finite-element-based imaginary distance beam propagation solution of complex modes in optical waveguides’, J. Lightwave Technol., 2001, 20, pp. 1054–1060 (doi: 10.1109/JLT.2002.1018817).
38. 38)
  - 22. Rajarajan, M., Obayya, S.S.A., Rahman, B.M.A., Grattan, K.T.V.: ‘Characterisation of low-loss waveguide bends with offset-optimisation for compact photonic integrated circuits’, Optoelectronics, 2000, 147, (6), pp. 382–388 (doi: 10.1049/ip-opt:20000814).
39. 39)
  - 29. Hameed, M.F.O., Obayya, S.S.A.: ‘Coupling characteristics of dual liquid crystal core soft glass photonic crystal fiber’, IEEE J. Quantum Electron., 2011, 47, (10), pp. 1283–1290 (doi: 10.1109/JQE.2011.2163702).
40. 40)
  - 26. Montanari, E., Selleri, S., Vincetti, L., Zoboli, M.: ‘Finite element full vectorial propagation analysis for three dimensional z-varying optical waveguides’, J. Lightwave Technol., 1998, 16, pp. 703–714 (doi: 10.1109/50.664086).
41. 41)
  - 38. Wojcik, J., Mergo, P., Makara, M., Poturaj, K., Skorupski, K., Klimek, J.: ‘V type high birefringent PCF fiber for hydrostatic pressure sensing’, Photonics Lett. Poland, 2010, 2, (1), pp. 10–12.
42. 42)
  - 27. Huang, W.P., Xu, C.L.: ‘Simulation of three-dimensional optical waveguides by a full-vector beam propagation method’, IEEE J. Quantum. Electron., 1993, 29, (10), pp. 2639–2649 (doi: 10.1109/3.250386).
43. 43)
  - 23. Fallahkhair, A.B., Li, K.S., Murphy, T.E.: ‘Vector finite difference mode solver for anisotropic dielectric waveguides’, J. Lightwave Technol., 2008, 26, (11), pp. 1423–1431 (doi: 10.1109/JLT.2008.923643).
44. 44)
  - 13. Hameed, M.F.O., Obayya, S.S.A.: ‘Polarization splitter based on soft glass nematic liquid crystal photonic crystal fiber’, IEEE Photonics J., 2009, 1, (6), pp. 265–276 (doi: 10.1109/JPHOT.2009.2037977).

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