Abstract

We will discuss fabrication of twin core photonic crystal fiber (TC-PCF) using the stack-and-draw method and its application for in-line Mach-Zehnder interferometers. The small difference in the effective indexes of the two core modes leads to interference fringes and the birefringence of the twin cores results in polarization-dependent fringe spacing. The strain sensitivity was negative and wavelength-dependent. A novel intensity-based bend sensor is also demonstrated with bend-induced spatial fringe shift. High air filling fraction of fabricated TC-PCF cladding provides immunity to bend-induced intensity fluctuation.

© 2009 OSA

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2008 (1)

2006 (1)

2005 (1)

K. Bulut and M. N. Inci, “Three-dimensional optical profilometry using a four-core optical fibre,” Opt. Laser Technol. 37(6), 463–469 (2005).
[CrossRef]

2004 (1)

2003 (3)

2002 (1)

1998 (1)

1997 (1)

1979 (1)

Berlemont, D.

Birks, T. A.

Bulut, K.

K. Bulut and M. N. Inci, “Three-dimensional optical profilometry using a four-core optical fibre,” Opt. Laser Technol. 37(6), 463–469 (2005).
[CrossRef]

Choi, H. Y.

Chung, Y.

Claesson, A.

Fokine, M.

Han, Y. G.

Ho, H. L.

Hocker, G. B.

Hoo, Y. L.

Inci, M. N.

K. Bulut and M. N. Inci, “Three-dimensional optical profilometry using a four-core optical fibre,” Opt. Laser Technol. 37(6), 463–469 (2005).
[CrossRef]

Jin, W.

Kang, J. U.

Kim, C. S.

Kjellberg, L.

Knight, J. C.

Krummenacher, L.

Lee, B. H.

Lee, S. B.

Margulis, W.

Mogilevtsev, D.

Nilsson, L. E.

Paek, U. C.

Park, K. S.

Peng, W.

Pickrell, G.

Ruan, S. C.

Russell, P.

P. Russell, “Photonic crystal fibers,” Science 299(5605), 358–362 (2003).
[CrossRef] [PubMed]

Russell, P. St. J.

Shi, C.

Wang, A.

Wang, D. N.

Appl. Opt. (2)

J. Lightwave Technol. (1)

Opt. Express (1)

Opt. Laser Technol. (1)

K. Bulut and M. N. Inci, “Three-dimensional optical profilometry using a four-core optical fibre,” Opt. Laser Technol. 37(6), 463–469 (2005).
[CrossRef]

Opt. Lett. (5)

Science (1)

P. Russell, “Photonic crystal fibers,” Science 299(5605), 358–362 (2003).
[CrossRef] [PubMed]

Other (1)

A. Bjarklev, J. Broeng, and A. S. Bjarklev, Photonic Crystal Fibres, (Kluwer Academic, The Netherlands, 2003).

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Figures (8)

Fig. 1
Fig. 1

Scanning electron micrograph of the cross-section of a sample fiber

Fig. 2
Fig. 2

Experimental setup of the proposed strain measurement based on the twin core photonic crystal fiber

Fig. 3
Fig. 3

Interference fringes with two orthogonal polarization states; (a) larger and (b) smaller peak spacing cases

Fig. 4
Fig. 4

Shift of the transmission spectrum of the proposed TC-PCF-based in-line interferometer with change of the applied strain.

Fig. 5
Fig. 5

Peak wavelength shift as a function of the applied strain

Fig. 6
Fig. 6

Experimental setup for macro-bending loss measurement (a) and measured bending loss (b)

Fig. 7
Fig. 7

Experimental setup for an intensity-based bend sensor based on the TC-PCF, two orthogonal bend directions, (a) and (b)

Fig. 8
Fig. 8

Projected interferometric fringe (inset) and bend induced fringe shift

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