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

1. H. S. Kim, S. H. Yun, I. K. Hwang, and B. Y. Kim, "All-fiber acousto-optic tunable notch filter with electronically controllable spectral profile," Opt. Lett. 22, 1476-1478 (1997). [CrossRef]
2. 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]
3. K. J. Lee, D. -I. Yeom, and B. Y. Kim, "Narrowband, polarization insensitive all-fiber acousto-optic tunable bandpass filter," Opt. Express 15, 2987-2992 (2007). [CrossRef] [PubMed]
4. 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]
5. R. N. Thurston, "Elastic waves in rods and clad rods," J. Acoust. Soc. Am. 64, 1-37 (1978). [CrossRef]
6. H. E. Engan, "Analysis of polarization-mode coupling by acoustic torsional waves in optical fibers," J. Opt. Soc. Am. A 13, 112-118 (1996). [CrossRef]
7. 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]
8. M. Berwick, and D. A. Jackson, "Coaxial optical-fiber frequency shifter," Opt. Lett. 17, 270-272 (1992). [CrossRef] [PubMed]
9. R. Ulrich and A. Simon, "Polarization optics of twisted single-mode fibers," Appl. Opt. 18, 2241-2251 (1979). [CrossRef] [PubMed]
10. D. Ostling and H. E. Engan, "Narrow-band acousto-optic tunable filtering in a two-mode fiber," Opt. Lett. 20, 1247-1249 (1995). [CrossRef] [PubMed]
11. 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]

Appl. Opt.

• R. Ulrich and A. Simon, "Polarization optics of twisted single-mode fibers," Appl. Opt. 18, 2241-2251 (1979). [CrossRef] [PubMed]

Electron. Lett.

• 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.

• 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.

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

J. Lightwave Technol.

• 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

• H. E. Engan, "Analysis of polarization-mode coupling by acoustic torsional waves in optical fibers," J. Opt. Soc. Am. A 13, 112-118 (1996). [CrossRef]

Opt. Express

• K. J. Lee, D. -I. Yeom, and B. Y. Kim, "Narrowband, polarization insensitive all-fiber acousto-optic tunable bandpass filter," Opt. Express 15, 2987-2992 (2007). [CrossRef] [PubMed]

Opt. Lett.

• H. S. Kim, S. H. Yun, I. K. Hwang, and B. Y. Kim, "All-fiber acousto-optic tunable notch filter with electronically controllable spectral profile," Opt. Lett. 22, 1476-1478 (1997). [CrossRef]
• M. Berwick, and D. A. Jackson, "Coaxial optical-fiber frequency shifter," Opt. Lett. 17, 270-272 (1992). [CrossRef] [PubMed]
• D. Ostling and H. E. Engan, "Narrow-band acousto-optic tunable filtering in a two-mode fiber," Opt. Lett. 20, 1247-1249 (1995). [CrossRef] [PubMed]

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