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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 16, Iss. 9 — Sep. 1, 1998
  • pp: 1671–

22 Fused Fiber Null Couplers with Asymmetric Waist Cross Sections for Polarization Independent (<0.01 dB) Switching

Selina G. Farwell, Michalis N. Zervas, and Richard I. Laming

Journal of Lightwave Technology, Vol. 16, Issue 9, pp. 1671- (1998)


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Abstract

Polarization independent (<0.01 dB) switching is achieved at 1.55 \mum in a strongly guiding, fused tapered fiber null coupler acoustooptic switch. An intermediate degree of fusion of the dissimilarly sized fibers is shown experimentally to have the form birefringence required to render the mode-splitting coupler polarization insensitive. The effect of the degree of fiber fusion on the acoustic wavelength of flexural waves is studied theoretically and experimentally, and precise control over the degree of fiber fusion is obtained for coupler waist cross-sectional dimensions as small as 6 \mum.

[IEEE ]

Citation
Selina G. Farwell, Michalis N. Zervas, and Richard I. Laming, "22 Fused Fiber Null Couplers with Asymmetric Waist Cross Sections for Polarization Independent (<0.01 dB) Switching," J. Lightwave Technol. 16, 1671- (1998)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-16-9-1671


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References

  1. T. Wu and H. Chang, "Rigorous analysis of form birefringence of weakly fused fiber-optic couplers," J. Lightwave Technol., vol. 13, pp. 687-691, 1995.
  2. W. Huang, C. Xu, and S. K. Chaudhuri, "Modeling and analysis of fiber-optic mode transducers: Single fiber with periodic perturbations," J. Lightwave Technol., vol. 9, pp. 1431-1438, Nov. 1991.
  3. 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., vol. 6, pp. 428-436, Mar. 1988.
  4. T. A. Birks, P. St. J. Russell, and D. O. Culverhouse, "The acousto-optic effect in single-mode fiber tapers and couplers," J. Lightwave Technol., vol. 14, pp. 2519-2529, Nov. 1996.
  5. M. N. McLandrich, R. J. Orazi, and H. R. Marlin, "Polarization independent narrow channel wavelength division multiplexing fiber couplers for 1.55 m," J. Lightwave Technol., vol. 9, pp. 442-447, Apr. 1991.

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