Abstract

Fused tapered single-mode fiber couplers are analyzed in detail by the simple effective-index method. It is found that the core parameters of the coupler, i.e., the core–cladding radius ratio, the core–cladding profile height, and the core separation, can have significant effects on the coupler characteristics. In practice, neglect of the cores as in many previous studies may lead to intolerable errors.

© 1987 Optical Society of America

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References

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  1. J. Bures, S. Lacrois, J. Lapierre, Appl. Opt. 21, 1918 (1983).
    [Crossref]
  2. T. Bricheno, V. Baker, Electron. Lett. 21, 251 (1985).
    [Crossref]
  3. J. D. Love, M. Hall, Electron. Lett. 21, 519 (1985).
  4. F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
    [Crossref]
  5. A. W. Snyder, X.-H. Zheng, Electron. Lett. 21, 1079 (1985).
    [Crossref]
  6. K. S. Chiang, Electron. Lett. 22, 1221 (1986).
    [Crossref]
  7. J. V. Wright, Electron. Lett. 21, 1064 (1985).
    [Crossref]
  8. K. S. Chiang, Appl. Opt. 25, 348 (1986).
    [Crossref] [PubMed]
  9. K. S. Chiang, Appl. Opt. 25, 2169 (1986).
    [Crossref] [PubMed]
  10. K. S. Chiang, Opt. Quantum Electron. 16, 487 (1984).
    [Crossref]

1986 (3)

1985 (5)

J. V. Wright, Electron. Lett. 21, 1064 (1985).
[Crossref]

T. Bricheno, V. Baker, Electron. Lett. 21, 251 (1985).
[Crossref]

J. D. Love, M. Hall, Electron. Lett. 21, 519 (1985).

F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
[Crossref]

A. W. Snyder, X.-H. Zheng, Electron. Lett. 21, 1079 (1985).
[Crossref]

1984 (1)

K. S. Chiang, Opt. Quantum Electron. 16, 487 (1984).
[Crossref]

1983 (1)

J. Bures, S. Lacrois, J. Lapierre, Appl. Opt. 21, 1918 (1983).
[Crossref]

Baker, V.

T. Bricheno, V. Baker, Electron. Lett. 21, 251 (1985).
[Crossref]

Bricheno, T.

T. Bricheno, V. Baker, Electron. Lett. 21, 251 (1985).
[Crossref]

Bures, J.

J. Bures, S. Lacrois, J. Lapierre, Appl. Opt. 21, 1918 (1983).
[Crossref]

Chiang, K. S.

K. S. Chiang, Appl. Opt. 25, 348 (1986).
[Crossref] [PubMed]

K. S. Chiang, Appl. Opt. 25, 2169 (1986).
[Crossref] [PubMed]

K. S. Chiang, Electron. Lett. 22, 1221 (1986).
[Crossref]

K. S. Chiang, Opt. Quantum Electron. 16, 487 (1984).
[Crossref]

Hall, M.

J. D. Love, M. Hall, Electron. Lett. 21, 519 (1985).

Hussey, C. D.

F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
[Crossref]

Lacrois, S.

J. Bures, S. Lacrois, J. Lapierre, Appl. Opt. 21, 1918 (1983).
[Crossref]

Lapierre, J.

J. Bures, S. Lacrois, J. Lapierre, Appl. Opt. 21, 1918 (1983).
[Crossref]

Love, J. D.

J. D. Love, M. Hall, Electron. Lett. 21, 519 (1985).

Payne, F. P.

F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
[Crossref]

Snyder, A. W.

A. W. Snyder, X.-H. Zheng, Electron. Lett. 21, 1079 (1985).
[Crossref]

Wright, J. V.

J. V. Wright, Electron. Lett. 21, 1064 (1985).
[Crossref]

Yataki, M. S.

F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
[Crossref]

Zheng, X.-H.

A. W. Snyder, X.-H. Zheng, Electron. Lett. 21, 1079 (1985).
[Crossref]

Appl. Opt. (3)

Electron. Lett. (6)

T. Bricheno, V. Baker, Electron. Lett. 21, 251 (1985).
[Crossref]

J. D. Love, M. Hall, Electron. Lett. 21, 519 (1985).

F. P. Payne, C. D. Hussey, M. S. Yataki, Electron. Lett. 21, 461 (1985).
[Crossref]

A. W. Snyder, X.-H. Zheng, Electron. Lett. 21, 1079 (1985).
[Crossref]

K. S. Chiang, Electron. Lett. 22, 1221 (1986).
[Crossref]

J. V. Wright, Electron. Lett. 21, 1064 (1985).
[Crossref]

Opt. Quantum Electron. (1)

K. S. Chiang, Opt. Quantum Electron. 16, 487 (1984).
[Crossref]

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Figures (5)

Fig. 1
Fig. 1

(a) Coupler of rectangular cross section; (b) approximate one-dimensional equivalence filled with effective indices.

Fig. 2
Fig. 2

Spectral dependence of coupling coefficient Cy for various Δ1 and ρ2/ρ1: (a) d = 1.2/ρ2, (b) d = 2ρ2.

Fig. 3
Fig. 3

Percentage error for Cy incurred by neglecting the cores.

Fig. 4
Fig. 4

Spectral dependence of CxCy for various values of ρ2/ρ1 (d = 1.2ρ2, Δ1 = 0.003).

Fig. 5
Fig. 5

The fields of the E11y (symmetric) and E21x,y (antisymmetric) modes in a coupler with cores (solid curves) or without cores (dashed curves) at various values of V (d = 1.2ρ2, Δ1 = 0.003, ρ2/ρ1 = 20).

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