Abstract

We demonstrate an all-fiber tunable polarization filter with high coupling efficiency based on acousto-optic coupling between two optical polarization modes of the LP01 mode propagating in a highly birefringent single mode optical fiber. An over-coupling between the two polarization modes is realized over the wavelength range from 1530 nm to 1610 nm using traveling torsional acoustic wave. The measured 3-dB optical bandwidth of the filter was 4.8 nm at the wavelength around 1550 nm. The details of the filter transmission and the coupling characteristics are discussed.

© 2007 Optical Society of America

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References

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    [CrossRef]
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    [CrossRef]
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    [CrossRef] [PubMed]
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    [CrossRef]
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    [CrossRef]
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    [CrossRef]

2007 (1)

2004 (1)

S. H. Yun and H. S. Kim, "Resonance in fiber-based acoustooptic devices via acoustic radiation to air," IEEE Photon. Technol. Lett. 16, 147-149 (2004).
[CrossRef]

2003 (1)

S. S. Lee, H. S. Kim, I. K. Hwang and S. H. Yun, "Highly-efficient broadband acoustic transducer for all-fibre acousto-optic devices," Electron. Lett. 39, 1309-1310 (2003).
[CrossRef]

1997 (1)

1996 (1)

1995 (1)

1992 (1)

1991 (1)

M. Berwick, C. N. Pannell, P. St. J. Russell, and D. A. Jackson, "Demonstration of birefringent optical fibre frequency shifter employing torsional acoustic waves," Electron. Lett. 27, 713-715 (1991).
[CrossRef]

1988 (1)

H. E. Engan, B. Y. Kim, J. N. Blake, and H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

1979 (1)

1978 (1)

R. N. Thurston, "Elastic waves in rods and clad rods," J. Acoust. Soc. Am. 64, 1-37 (1978).
[CrossRef]

Appl. Opt. (1)

Electron. Lett. (2)

S. S. Lee, H. S. Kim, I. K. Hwang and S. H. Yun, "Highly-efficient broadband acoustic transducer for all-fibre acousto-optic devices," Electron. Lett. 39, 1309-1310 (2003).
[CrossRef]

M. Berwick, C. N. Pannell, P. St. J. Russell, and D. A. Jackson, "Demonstration of birefringent optical fibre frequency shifter employing torsional acoustic waves," Electron. Lett. 27, 713-715 (1991).
[CrossRef]

IEEE Photon. Technol. Lett. (1)

S. H. Yun and H. S. Kim, "Resonance in fiber-based acoustooptic devices via acoustic radiation to air," IEEE Photon. Technol. Lett. 16, 147-149 (2004).
[CrossRef]

J. Acoust. Soc. Am. (1)

R. N. Thurston, "Elastic waves in rods and clad rods," J. Acoust. Soc. Am. 64, 1-37 (1978).
[CrossRef]

J. Lightwave Technol. (1)

H. E. Engan, B. Y. Kim, J. N. Blake, and H. J. Shaw, "Propagation and optical interaction of guided acoustic waves in two-mode optical fibers," J. Lightwave Technol. 6, 428-436 (1988).
[CrossRef]

J. Opt. Soc. Am. A (1)

Opt. Express (1)

Opt. Lett. (3)

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Figures (5)

Fig. 1.
Fig. 1.

Schematic of an all-fiber acousto-optic tunable polarization filter.

Fig. 2.
Fig. 2.

Transducer design for generation of torsional acoustic wave. Two oppositely poled PZT elements are attached to glass horn.

Fig. 3.
Fig. 3.

Measured transmission spectra of the all-fiber AOTPF operating as (a) the notch type and as (b) the bandpass type at the acoustic frequency of 1.337 MHz.

Fig. 4.
Fig. 4.

Optical coupling efficiency between two polarization eigenmodes versus the magnitude of the applied voltage.

Fig. 5.
Fig. 5.

Center wavelength of the all-fiber AOTPF as a function of the acoustic wavelength.

Equations (3)

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κ = 2 π Φ L B ( 1 + 1 2 n 2 p 44 ) .
β 01 , x β 01 , y = 2 π L B ,
Φ = 1 4 L B L c ( 1 + 1 2 n 2 p 44 ) 1 .

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