Abstract

A structure that tan reduce abrupt-bend losses in dielectric optical waveguides is proposed. The structure has a relatively low refractive-index region at the outside of the corner; the region operates as a phase-front accelerator of the propagating mode. It has been ascertained by basic experiments that the bending loss of this structure can be significantly reduced from that of the conventional one.

© 1986 Optical Society of America

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References

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  1. H. F. Taylor, Appl. Opt. 13, 642 (1974).
    [CrossRef] [PubMed]
  2. L. M. Johnson, F. J. Leonberger, Opt. Lett. 8, 111 (1983).
    [CrossRef] [PubMed]
  3. S. Kawakami, K. Baba, Appl. Opt. 24, 3643 (1985).
    [CrossRef] [PubMed]
  4. D. D. King, IRE Trans. Microwave Theory Tech. MTT-3, 75 (1955).
    [CrossRef]
  5. K. Ogusu, IEEE Trans. Microwave Theory Tech. MTT-32, 113 (1984).
    [CrossRef]
  6. S. R. Forrest, IEEE J. Lightwave Technol. LT-2, 34 (1984).
    [CrossRef]
  7. N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).
  8. K. Ogusu, Opt. Commun. 55, 149 (1985).
    [CrossRef]
  9. P. Buchmann, H. Kaufmann, IEEE J. Lightwave Technol. LT-3, 785 (1985).
    [CrossRef]
  10. J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
    [CrossRef]
  11. J. E. Gortych, D. G. Hall, Opt. Lett. 11, 100 (1986).
    [CrossRef] [PubMed]

1986 (1)

1985 (4)

S. Kawakami, K. Baba, Appl. Opt. 24, 3643 (1985).
[CrossRef] [PubMed]

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

K. Ogusu, Opt. Commun. 55, 149 (1985).
[CrossRef]

P. Buchmann, H. Kaufmann, IEEE J. Lightwave Technol. LT-3, 785 (1985).
[CrossRef]

1984 (2)

K. Ogusu, IEEE Trans. Microwave Theory Tech. MTT-32, 113 (1984).
[CrossRef]

S. R. Forrest, IEEE J. Lightwave Technol. LT-2, 34 (1984).
[CrossRef]

1983 (1)

1976 (1)

J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
[CrossRef]

1974 (1)

1955 (1)

D. D. King, IRE Trans. Microwave Theory Tech. MTT-3, 75 (1955).
[CrossRef]

Baba, K.

Buchmann, P.

P. Buchmann, H. Kaufmann, IEEE J. Lightwave Technol. LT-3, 785 (1985).
[CrossRef]

Feit, M. D.

J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
[CrossRef]

Fleck, J. A.

J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
[CrossRef]

Forrest, S. R.

S. R. Forrest, IEEE J. Lightwave Technol. LT-2, 34 (1984).
[CrossRef]

Gortych, J. E.

Haga, H.

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

Hall, D. G.

Izutsu, M.

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

Johnson, L. M.

Kaufmann, H.

P. Buchmann, H. Kaufmann, IEEE J. Lightwave Technol. LT-3, 785 (1985).
[CrossRef]

Kawakami, S.

King, D. D.

D. D. King, IRE Trans. Microwave Theory Tech. MTT-3, 75 (1955).
[CrossRef]

Leonberger, F. J.

Mekada, N.

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

Morris, J. R.

J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
[CrossRef]

Ogusu, K.

K. Ogusu, Opt. Commun. 55, 149 (1985).
[CrossRef]

K. Ogusu, IEEE Trans. Microwave Theory Tech. MTT-32, 113 (1984).
[CrossRef]

Sueta, T.

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

Taylor, H. F.

Appl. Opt. (2)

Appl. Phys. (1)

J. A. Fleck, J. R. Morris, M. D. Feit, Appl. Phys. 10, 129 (1976).
[CrossRef]

IEEE J. Lightwave Technol. (2)

S. R. Forrest, IEEE J. Lightwave Technol. LT-2, 34 (1984).
[CrossRef]

P. Buchmann, H. Kaufmann, IEEE J. Lightwave Technol. LT-3, 785 (1985).
[CrossRef]

IEEE Trans. Microwave Theory Tech. (1)

K. Ogusu, IEEE Trans. Microwave Theory Tech. MTT-32, 113 (1984).
[CrossRef]

IRE Trans. Microwave Theory Tech. (1)

D. D. King, IRE Trans. Microwave Theory Tech. MTT-3, 75 (1955).
[CrossRef]

Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. (1)

N. Mekada, H. Haga, M. Izutsu, T. Sueta, Nat. Convention Rec. Inst. Electron. Commun. Eng. Jpn. 4-90 (1985).

Opt. Commun. (1)

K. Ogusu, Opt. Commun. 55, 149 (1985).
[CrossRef]

Opt. Lett. (2)

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Figures (5)

Fig. 1
Fig. 1

Abrupt bends: (a) conventional bend and (b) proposed structure.

Fig. 2
Fig. 2

Calculated phase and field distributions for (a), (b) the conventional abrupt bends and (c), (d) the proposed structure when the tilt angle θ = 3°.

Fig. 3
Fig. 3

Bending losses for the conventional and proposed bends.

Fig. 4
Fig. 4

Bending losses as a function of d.

Fig. 5
Fig. 5

Measured relative intensity distributions of the light scattered from conventional and proposed waveguides with θ = 2°.

Equations (1)

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D = D 0 exp ( - Q / R T ) ,

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