Abstract

We report 2×2 and 4×4 multimode air-clad holey fiber couplers fabricated by a novel fusion and tapering technique. The devices showed excellent port-to-port coupling uniformity over a wide spectral range of 8001650nm. The 4×4 coupler showed a low insertion loss of 9.9dB and excess loss of 3.9dB at 1310nm. Because of its unique air cladding and the high numerical aperture of the holey fiber structure, the device showed strong potential in high-power applications.

© 2005 Optical Society of America

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References

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2004 (1)

2003 (1)

2002 (2)

2000 (2)

W. J. Wadsworth, J. C. Knight, W. H. Reeves, and P. St. J. Russell, Electron. Lett. 36, 1452 (2000).
[CrossRef]

J. K. Ranka, R. S. Windeler, and A. J. Stentz, Opt. Lett. 25, 25 (2000).
[CrossRef]

1999 (1)

J. Broeng, D. Mogilevstev, S. E. Barkou, and A. Bjarklev, Opt. Fiber Technol. 5, 305 (1999).
[CrossRef]

1997 (1)

1996 (1)

1972 (1)

D. Gloge, Bell Syst. Tech. J. 51, 1765 (1972).
[CrossRef]

Atkin, D. M.

Barkou, S. E.

J. Broeng, D. Mogilevstev, S. E. Barkou, and A. Bjarklev, Opt. Fiber Technol. 5, 305 (1999).
[CrossRef]

Birks, T. A.

Bjarklev, A.

J. Broeng, D. Mogilevstev, S. E. Barkou, and A. Bjarklev, Opt. Fiber Technol. 5, 305 (1999).
[CrossRef]

Broeng, J.

J. Broeng, D. Mogilevstev, S. E. Barkou, and A. Bjarklev, Opt. Fiber Technol. 5, 305 (1999).
[CrossRef]

Eom, J. B.

Fisher, D.

Glas, P.

Gloge, D.

D. Gloge, Bell Syst. Tech. J. 51, 1765 (1972).
[CrossRef]

Kim, H.

Kim, J.

Kim, K. T.

Knight, J. C.

Lee, B. H.

Limpert, J.

Mogilevstev, D.

J. Broeng, D. Mogilevstev, S. E. Barkou, and A. Bjarklev, Opt. Fiber Technol. 5, 305 (1999).
[CrossRef]

Moon, D. S.

Nolte, S.

Paek, U.-C.

Ranka, J. K.

Reeves, W. H.

W. J. Wadsworth, J. C. Knight, W. H. Reeves, and P. St. J. Russell, Electron. Lett. 36, 1452 (2000).
[CrossRef]

Russell, P. St. J.

Schreiber, T.

Stentz, A. J.

Tunnermann, A.

Wadsworth, W. J.

W. J. Wadsworth, J. C. Knight, W. H. Reeves, and P. St. J. Russell, Electron. Lett. 36, 1452 (2000).
[CrossRef]

Windeler, R. S.

Zellmer, H.

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the MACHF coupler: (a) cross sectional view of the MACHF, (b) schematic diagram and side view of a 2 × 2 MACHF coupler, (c) schematic diagram for a 4 × 4 MACHF coupler.

Fig. 2
Fig. 2

Comparison of output characteristics of a conventional multimode fiber coupler and the MACHF coupler: (a) power coupling between two arms of 2 × 2 MACHF coupler, (b) output power spectra of 2 × 2 MACHF coupler, (c) output power spectra of a 4 × 4 coupler made of conventional 62.5 125 μ m graded-index multimode fiber, (d) output power spectra of a 4 × 4 MACHF coupler.

Fig. 3
Fig. 3

Setup of experiment for transmission quality measurement; MMF, conventional 62.5 125 μ m graded-index multimode fiber.

Tables (1)

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Table 1 Measurement of Insertion Loss, Excess Loss, and Distribution Ratio for MACHF Couplers

Equations (3)

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Insertion loss [ dB ] = 10 × log ( P out P in ) ,
Excess loss [ dB ] = 10 × log ( sum [ P out ] P in ) ,
Distribution ratio [ dB ] = Maximum insertion loss Minimum insertion loss .

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