Observing cross-sectional images and averaged optical patterns of photonic crystal fibers using partially incoherent laser light

F. W. Sheu; J. Y. Chen

doi:10.2971/jeos.2013.13003

Journal of the European Optical Society - Rapid publications, Vol 8 (2013)

Observing cross-sectional images and averaged optical patterns of photonic crystal fibers using partially incoherent laser light

F. W. Sheu, J. Y. Chen

Abstract

We couple the coherent laser light and the partially incoherent laser light into the photonic crystal fibers, respectively, and compare the observed fiber cross-sectional images. Lower coherence light can indeed help us obtain higher-quality and uniform cross-sectional images on the fiber output endfaces. We have observed rather unique and clear averaged optical mode patterns within the microstructures of a silica-air index-guiding solid-core photonic crystal fiber, which might be due to the stress-induced refractive-index inhomogeneity formed therein during the fiber manufacturing process. The experimental results are also compared with those images taken by other light sources or imaging systems. Besides, we successfully achieve capturing consecutively the various near-field averaged optical patterns of the solidcore photonic crystal fiber using this single-wavelength partially incoherent laser light imaging system.

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References

F. W. Sheu and J. Y. Chen, ”Fiber cross-sectional imaging by manually controlled low coherence light sources,” Opt. Express 16, 22113–22118 (2008).

M. Mitchell, Z. Chen, M. F. Shih, and M. Segev, ”Self-Trapping of Partially Spatially Incoherent Light,” Phys. Rev. Lett. 77, 490–493 (1996).

F. W. Sheu, and J. Y. Chen, ”Observing cross-sectional images of various optical fibers using low coherence transformed laser light,” Phys. Procedia 19, 325–328 (2011).

W. S. Tsai, W. S. Wang, and P. K. Wei, ”Two-dimensional refractive index profiling by using differential near-field scanning optical microscopy,” Appl. Phys. Lett. 91, 061123 (2007).

F. W. Sheu, C. Y. Weng, C. H. Chen, ”Improved fabrication of circular-grating microstructured devices using partially spatially incoherent ultraviolet laser light,” Opt. Commun. 285, 2990–2995 (2012).

D. A. Wang, F. W. Sheu, Y. S. Chiu, ”In-plane vibration characterization of microelectromechanical systems using acousto-optic modulated partially incoherent stroboscopic imaging,” Opt. Laser. Eng. 49, 954–961 (2011).

P. St. J. Russell, ”Photonic Crystal Fibers,” Science 299, 358–362 (2003).

P. St. J. Russell, ”Photonic-Crystal Fibers,” J. Lightwave Technol. 24, 4729–4749 (2006).

N. Mortensen, and J. Folkenberg, ”Near-field to far-field transition of photonic crystal fibers: symmetries and interference phenomena,” Opt. Express 10, 475–481 (2002).

G. Humbert, J. Knight, G. Bouwmans, P. Russell, D. Williams, P. Roberts, and B. Mangan, ”Hollow core photonic crystal fibers for beam delivery,” Opt. Express 12, 1477–1484 (2004).

J. Gates, C. Hillman, Joanne Baggett, K. Furusawa, T. Monro, and W. Brocklesby, ”Structure and propagation of modes of large mode area holey fibers,” Opt. Express 12, 847–852 (2004).

J. D. Shephard, P. J. Roberts, J. D. C. Jones, J. C. Knight, and D. P. Hand, ”Measuring Beam Quality of Hollow Core Photonic Crystal Fibers,” J. Lightwave Technol. 24, 3761–2769 (2006).

F. Couny, F. Benabid, P. J. Roberts, M. T. Burnett, and S. A. Maier, ”Identification of Bloch-modes in hollow-core photonic crystal fiber cladding,” Opt. Express 15, 325–338 (2007).

S. D. Lim, H. C. Park, I. K. Hwang, S. B. Lee, and B. Y. Kim, ”Experimental excitation and characterization of cladding modes in photonic crystal fiber,” Opt. Express 18, 1833–1840 (2010).

J. Broeng, S. E. Barkou, A. Bjarklev, J. C. Knight, T. A. Birks, P. St. J. Russell, ”Highly increased photonic band gaps in silica/air structures,” Opt. Commun. 156, 240–244 (1998).

S. Konorov, E. Serebryannikov, A. Zheltikov, P. Zhou, A. Tarasevitch, and D. von der Linde, ”Mode-controlled colors from microstructure fibers,” Opt. Express 12, 730–735 (2004).

S. Kim, Y. Jung, K. Oh, J. Kobelke, K. Schuster, and J. Kirchhof, ”Defect and lattice structure for air-silica index-guiding holey fibers,” Opt. Lett. 31, 164–166 (2006).

L. Yan, X. S. Yao, L. Lin, and X. Chen, ”Improved beam uniformity in multimode fibers using piezoelectric-based spatial mode scrambling for medical applications,” Opt. Eng. 47, 090502 (2008).

N. A. Mortensen, ”Effective area of photonic crystal fibers,” Opt. Express 10, 341–348 (2002).

N. A. Mortensen, J. R. Folkenberg, M. D. Nielsen, and K. P. Hansen, ”Modal cutoff and the V parameter in photonic crystal fibers,” Opt. Lett. 28, 1879–1881 (2003).

M. Nielsen, and N. Mortensen, ”Photonic crystal fiber design based on the V-parameter,” Opt. Express 11, 2762–2768 (2003).

G. Renversez, F. Bordas, and B. T. Kuhlmey, ”Second mode transition in microstructured optical fibers: determination of the critical geometrical parameter and study of the matrix refractive index and effects of cladding size,” Opt. Lett. 30, 1264–1266 (2005).

K. Saitoh, Y. Tsuchida, M. Koshiba, and N. A. Mortensen, ”Endlessly single-mode holey fibers: the influence of core design,” Opt. Express 13, 10833–10839 (2005).

J. Liu, G. Kai, L. Xue, Z. Wang, Y. Liu, Y. Li, C. Zhang, T. Sun, and X. Dong, ”Modal cutoff properties in germanium-doped photonic crystal fiber,” Appl. Opt. 45, 2035–2038 (2006).

X. Zhao, L. Hou, Z. Liu, W. Wang, G. Zhou, and Z. Hou, ”Improved fully vectorial effective index method in photonic crystal fiber,” Appl. Opt. 46, 4052–4056 (2007).

W. Chen, J. Li, S. Li, H. Li, Z. Jiang, and J. Peng, ”Study on single-mode photonic crystal fibers in wide wavelength range,” Chin. Opt. Lett. 5, 383–385 (2007).

Y. Li, Y. Yao, M. Hu, L. Chai, and C. Wang, ”Improved fully vectorial effective index method for photonic crystal fibers: evaluation and enhancement,” Appl. Opt. 47, 399–406 (2008).

M. Y. Chen, ”All-solid silica-based photonic crystal fibers,” Opt. Commun. 266, 151–158 (2006).

C. Wang, F. Zhang, Y. Lu, C. Liu, R. Geng, T. Ning and S. Jian, ”Single-mode operations in the large flattened mode optical fiber lasers and amplifiers,” J. Opt. A: Pure Appl. Opt. 11, 065402 (2009).

W. Ha, S. Lee, J. Kim, Y. Jeong, K. Oh, J. Kobelke, K. Schuster, S. Unger, A. Schwuchow, and J. K. Kim, ”A micro-structured aperture made of a hollow triangular-core fiber for novel beam shaping,” Opt. Express 18, 20918–20925 (2010).