The formation of phase singularities in optical fibers is theoretically and experimentally investigated. In particular, their structural characteristics and properties are discussed in relation to guided mode patterns. It is found that except for the fundamental linearly polarized(LP) modes, all the mixed modes displayed phase singularities in the transverse plane. The results in the few mode fiber show that superposition of the LP even and odd modes produces isolated dark points and phase singularities. Phase singularities are found to be of the screw type and of first order. The number of phase singularities linearly increases with the number of guided modes.

© 1997 Optical Society of Korea

1. "New trends in nonlinear dynamics and pattern form-ing phenomena: Geometry of nonequilibrium" P. Coullet and P. Huerre, Nato ASI Series B, ed., Physics Vol 237 (Plenum, New York, 1990)
2. S.W Morris, E. Bodenscharz, D.S. Cannell and G. Ahlers, Phys. Rev. Lett,. 71, 2026 (1993) [CrossRef]
3. A.C Newell, Phys. Rev. Lett., 68, 1864 (1992) [CrossRef]
4. G.S. Skinner and H.L Swinney, Physica D, 481 (1991)
5. M. Brambilla, F. Battipede, L.A. Lugiato, V. Penna, F. Prati, C. Tamm and C.O Wess, Phy. Rev. A43, 5090 (1991)
6. C.O. Weiss, Phy. Reports, 219, 311 (1992)
7. M.V. Berry, J.F. Nye and F.J. Wright, Phil. Trans. of R. Soc. of London., 291, 453 (1979)
8. M. V. Berry "Singularities in wave and rays" in Physics of defects, ed. by R. Balian ed at. (North Holland publish-ing company, 1980)
9. N. B. Baranova and B. Ya Zel"dovich, Sov. Phys. JETP 53, 925 (1981)
10. N. B. Baranova, B. Ya Zel"dovich, A.V. Mameaev, N.F. Pilipetsky and V.V. Shkunov, Sov. Phys. JETP .56, 983 (1982)
11. B.Ya Zel"dovich, N.F. Pilipetsky V.V. Shkunov, "Prin-ciple of phase conjugation" (Springer- Verlag, Berlin, 1985)
12. V.Yu. Bazehenov, M.S. Soskin and M. Vasnetsov, J. of Mod. Opt., 39, 985 (1992) [CrossRef]
13. I. Basistiy, V. Yu. Bazhenov, M.S. Soskin and M. Vas-netsov, Opt. Comm., 103, 422 (1993) [CrossRef]
14. Discussion session after physics report, Phys. Report, 219, 339 (1992)
15. V.Yu. Bazehenov, M.S. Soskin and M.V. Vasnetsov, JEPT Lett. 52, 429 (1990)
16. D.S. Lim, A. Johnstone, Weiping Lu and R.G. Harri-son, EQEC 91, Edinburgh, UK (1991)
17. D. Gloge, Appl. Opt., 10, 2252 (1971) [CrossRef]
18. D. Marcuse "Theory of dielectric optical waveguides"(Academic press, NY, 1974)
19. A. Siegman "Lasers" (University Science Books, MillValley, 1986)
20. F.T. Arecchi, "Pattern formation and space-time or-ganisation in nonlinear optics" in Nonlinear dynamics and spatial complexity in optical systems, R.G. Harrion and J.S Uppal ed., (Institute of physics publishing, Bristol, 1993) pp. 65-113.

Applied Optics

• D. Gloge, Appl. Opt., 10, 2252 (1971) [CrossRef]

EQEC

• D.S. Lim, A. Johnstone, Weiping Lu and R.G. Harri-son, EQEC 91, Edinburgh, UK (1991)

JEPT Lett.

• V.Yu. Bazehenov, M.S. Soskin and M.V. Vasnetsov, JEPT Lett. 52, 429 (1990)

Journal of Modern Optics

• V.Yu. Bazehenov, M.S. Soskin and M. Vasnetsov, J. of Mod. Opt., 39, 985 (1992) [CrossRef]

Optics Communications

• I. Basistiy, V. Yu. Bazhenov, M.S. Soskin and M. Vas-netsov, Opt. Comm., 103, 422 (1993) [CrossRef]

Phil. Trans. of R. Soc. of London.

• M.V. Berry, J.F. Nye and F.J. Wright, Phil. Trans. of R. Soc. of London., 291, 453 (1979)

Phy. Rev. A

• M. Brambilla, F. Battipede, L.A. Lugiato, V. Penna, F. Prati, C. Tamm and C.O Wess, Phy. Rev. A43, 5090 (1991)

Phys. Rev. Lett.

• S.W Morris, E. Bodenscharz, D.S. Cannell and G. Ahlers, Phys. Rev. Lett,. 71, 2026 (1993) [CrossRef]
• A.C Newell, Phys. Rev. Lett., 68, 1864 (1992) [CrossRef]

Physica D

• G.S. Skinner and H.L Swinney, Physica D, 481 (1991)

Sov. Phys. JEPT

• N. B. Baranova, B. Ya Zel"dovich, A.V. Mameaev, N.F. Pilipetsky and V.V. Shkunov, Sov. Phys. JETP .56, 983 (1982)

Sov. Phys. JETP

• N. B. Baranova and B. Ya Zel"dovich, Sov. Phys. JETP 53, 925 (1981)

Other

• "New trends in nonlinear dynamics and pattern form-ing phenomena: Geometry of nonequilibrium" P. Coullet and P. Huerre, Nato ASI Series B, ed., Physics Vol 237 (Plenum, New York, 1990)
• M. V. Berry "Singularities in wave and rays" in Physics of defects, ed. by R. Balian ed at. (North Holland publish-ing company, 1980)
• C.O. Weiss, Phy. Reports, 219, 311 (1992)
• B.Ya Zel"dovich, N.F. Pilipetsky V.V. Shkunov, "Prin-ciple of phase conjugation" (Springer- Verlag, Berlin, 1985)
• Discussion session after physics report, Phys. Report, 219, 339 (1992)
• D. Marcuse "Theory of dielectric optical waveguides"(Academic press, NY, 1974)
• A. Siegman "Lasers" (University Science Books, MillValley, 1986)
• F.T. Arecchi, "Pattern formation and space-time or-ganisation in nonlinear optics" in Nonlinear dynamics and spatial complexity in optical systems, R.G. Harrion and J.S Uppal ed., (Institute of physics publishing, Bristol, 1993) pp. 65-113.

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