Abstract

We have used two different photonic crystal fiber (PCF) techniques to make all-fiber mode converters. An LP01 to LP11 mode converter was made by the ferrule technique on a drawing tower, and an LP01 to LP02 mode converter was made by controlled hole inflation of an existing PCF on a tapering rig. Both devices rely on adiabatic propagation rather than resonant coupling; so high extinction was achieved across a wide wavelength range.

© 2007 Optical Society of America

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References

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2006 (3)

2005 (3)

2001 (1)

1995 (1)

Birks, T. A.

Chai, L.

Culverhouse, D. O.

Dimarcello, F. V.

Engeness, T. D.

Farwell, S. G.

Fink, Y.

George, A. K.

S. G. Leon-Saval, T. A. Birks, N. Y. Joly, A. K. George, W. J. Wadsworth, G. Kakarantzas, and P. St. J. Russell, Opt. Lett. 30, 1629 (2005).
[CrossRef] [PubMed]

S. G. Leon-Saval, T. A. Birks, A. K. George, W. J. Wadsworth, and P. St. J. Russell, in Proceedings of the Conference on Lasers Electro-Optics (Optical Society of America, 2005), paper CThZ2.

Ghalmi, S.

Hu, M.-L.

Ibanescu, M.

Jacobs, S. A.

Joannopoulos, J. D.

Johnson, S. G.

Joly, N. Y.

Kakarantzas, G.

Lai, K.

Leon-Saval, S. G.

Li, Y.-F.

Monberg, E.

Nicholson, J. W.

Ramachandran, S.

Russell, P. St. J.

S. G. Leon-Saval, T. A. Birks, N. Y. Joly, A. K. George, W. J. Wadsworth, G. Kakarantzas, and P. St. J. Russell, Opt. Lett. 30, 1629 (2005).
[CrossRef] [PubMed]

T. A. Birks, D. O. Culverhouse, S. G. Farwell, and P. St. J. Russell, Opt. Lett. 20, 1371 (1995).
[CrossRef] [PubMed]

S. G. Leon-Saval, T. A. Birks, A. K. George, W. J. Wadsworth, and P. St. J. Russell, in Proceedings of the Conference on Lasers Electro-Optics (Optical Society of America, 2005), paper CThZ2.

Serebryannikov, E. E.

Skorobogatiy, M.

Soljacic, M.

Song, Y.-J.

Wadsworth, W. J.

Wang, C.-Y.

Weisberg, O.

Wisk, P.

Witkowska, A.

Yan, M. F.

Zheltikov, A. M.

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Figures (6)

Fig. 1
Fig. 1

Schematic diagram of the construction of a ferrule transition between two dissimilar SMFs and a PCF.

Fig. 2
Fig. 2

SEM images of (left) the ferrule and (right) the PCF drawn from the ferrule with two dissimilar SMFs inserted side-by-side into the large central void.

Fig. 3
Fig. 3

(a) Far-field patterns emerging from the PCF output of the ferrule mode converter for input light in (left) the Corning fiber and (right) the Newport fiber, for the wavelengths indicated. (b) Intensity distribution along a line such as X X across the far field pattern, for light from a supercontinuum source input in the Newport fiber.

Fig. 4
Fig. 4

Top, Schematic longitudinal cross section of the inflation-based mode converter, showing core areas in dark gray. Bottom, Optical micrographs of the holey region in the cleaved fiber in each of sections A–D, on the same scale.

Fig. 5
Fig. 5

Top, Measured output (left) near- and (right) far-field intensity patterns at the wavelength of 1000 nm ; not to scale. Bottom, Corresponding calculated LP 02 mode patterns of a weakly guiding circular core.

Fig. 6
Fig. 6

Measured output near-field images at wavelengths of (a) 633, (b) 1000, and (c) 1200 nm .

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