Abstract

An all-fiber isolator with 17 dB optical isolation is demonstrated. The fiber Faraday rotator uses 56 wt. % terbium (Tb)-doped silicate fiber, and the fiber polarizers are Corning SP1060 single-polarization fiber. The effective Verdet constant of the Tb-doped fiber is measured to be 24.5±1.0  rad/(Tm) at 1053 nm, which is 20 times larger than silica fiber and 22% larger than previously reported results.

© 2010 Optical Society of America

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References

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1999

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1995

J. Ballato and E. Snitzer, Appl. Opt. 34, 6848 (1995).
[CrossRef] [PubMed]

V. Annovazzi-Lodi, S. Merlo, and A. Leona, J. Lightwave Technol. 13, 2349 (1995).
[CrossRef]

1982

1981

Andres, M. V.

Annovazzi-Lodi, V.

V. Annovazzi-Lodi, S. Merlo, and A. Leona, J. Lightwave Technol. 13, 2349 (1995).
[CrossRef]

Ballato, J.

Barlow, A. J.

Berkey, G. E.

Chen, X.

Clegg, A. G.

M. McCaig and A. G. Clegg, Permanent Magnets in Theory and Practice, 2nd ed. (Wiley, 1987).

Cruz, J. L.

Day, G. W.

Hernandez, M. A.

Jiang, S.

Kasahara, R.

Kawakami, S.

Leona, A.

V. Annovazzi-Lodi, S. Merlo, and A. Leona, J. Lightwave Technol. 13, 2349 (1995).
[CrossRef]

Li, M. -J.

Marciante, J. R.

McCaig, M.

M. McCaig and A. G. Clegg, Permanent Magnets in Theory and Practice, 2nd ed. (Wiley, 1987).

Merlo, S.

V. Annovazzi-Lodi, S. Merlo, and A. Leona, J. Lightwave Technol. 13, 2349 (1995).
[CrossRef]

Nolan, D. A.

Payne, D. N.

Ramskov-Hansen, J. J.

Sato, T.

Snitzer, E.

Stolen, R. H.

Sun, J.

Sun, L.

Turner, E. H.

Wood, W. A.

Zenteno, L. A.

Zuegel, J. D.

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Figures (4)

Fig. 1
Fig. 1

Measured rotation angle (circle) and corresponding curve fit (solid) at a wavelength of 1053 nm as a function of the magnet location along the fiber axis z.

Fig. 2
Fig. 2

Measured transmission spectra for two orthogonal polarization directions in 0.3-m-long SP1060 fiber coiled with a 15 cm diameter.

Fig. 3
Fig. 3

Experimental configuration of the all-fiber Faraday isolator.

Fig. 4
Fig. 4

Theoretical (solid) and measured (circle) magnetic-density flux distribution B z along the center axis z of the magnet. The dashed lines represent the physical ends of the magnet.

Equations (1)

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B z ( z ) = B r π ( tan 1 { a b 2 ( z + l / 2 ) [ 4 ( z + l / 2 ) 2 + a 2 + b 2 ] 1 / 2 } tan 1 { a b 2 ( z l / 2 ) [ 4 ( z l / 2 ) 2 + a 2 + b 2 ] 1 / 2 } ) ,

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