Abstract

A novel fiber-optic device acting simultaneously as a polarizer and a directional coupler is fabricated by coating a metal layer onto the fused biconical-taper structure of single-mode fibers. This polarizing directional coupler exhibits an extinction ratio of 15 dB together with a 1:1 power-splitting ratio and an excess loss of 2.8 dB.

© 1984 Optical Society of America

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References

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  1. R. Ulrich, “Fiber-optic rotating sensing with low drift,” Opt. Lett. 5, 173–175 (1980).
    [CrossRef] [PubMed]
  2. E. C. Kinter, “Polarization control in optical-fiber gyroscopes,” Opt. Lett. 6, 154–156 (1981).
    [CrossRef]
  3. J. Bures, S. Lacroix, J. Lapierre, “Analyse d’un coupleur bidirectionnel a fibres optiques monomodes fusionnees,” Appl. Opt. 22, 1918–1922 (1983).
    [CrossRef] [PubMed]
  4. W. Eickhoff, “In-line fiber-optic polarizer,” Electron. Lett. 16, 762–763 (1980).
    [CrossRef]
  5. T. Hosaka, K. Okamoto, T. Edahiro, “Fabrication of single-mode fiber-type polarizer,” Opt. Lett. 8, 124–126 (1983).
    [CrossRef] [PubMed]
  6. B. S. Kawasaki, K. O. Hill, R. G. Lamont, “Biconical-taper single-mode fiber coupler,” Opt. Lett. 6, 327–328 (1981).
    [CrossRef] [PubMed]
  7. D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.
  8. M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
    [CrossRef]

1983 (2)

1982 (1)

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

1981 (2)

1980 (2)

R. Ulrich, “Fiber-optic rotating sensing with low drift,” Opt. Lett. 5, 173–175 (1980).
[CrossRef] [PubMed]

W. Eickhoff, “In-line fiber-optic polarizer,” Electron. Lett. 16, 762–763 (1980).
[CrossRef]

Bures, J.

Edahiro, T.

T. Hosaka, K. Okamoto, T. Edahiro, “Fabrication of single-mode fiber-type polarizer,” Opt. Lett. 8, 124–126 (1983).
[CrossRef] [PubMed]

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

Eickhoff, W.

W. Eickhoff, “In-line fiber-optic polarizer,” Electron. Lett. 16, 762–763 (1980).
[CrossRef]

Gruchmann, D.

D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.

Hill, K. O.

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

B. S. Kawasaki, K. O. Hill, R. G. Lamont, “Biconical-taper single-mode fiber coupler,” Opt. Lett. 6, 327–328 (1981).
[CrossRef] [PubMed]

Hosaka, T.

Kawachi, M.

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

Kawasaki, B. S.

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

B. S. Kawasaki, K. O. Hill, R. G. Lamont, “Biconical-taper single-mode fiber coupler,” Opt. Lett. 6, 327–328 (1981).
[CrossRef] [PubMed]

Kinter, E. C.

Lacroix, S.

Lamont, R. G.

Lapierre, J.

Okamoto, K.

Petermann, K.

D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.

Staudigel, L.

D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.

Ulrich, R.

Weidel, E.

D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.

Appl. Opt. (1)

Electron. Lett. (2)

W. Eickhoff, “In-line fiber-optic polarizer,” Electron. Lett. 16, 762–763 (1980).
[CrossRef]

M. Kawachi, B. S. Kawasaki, K. O. Hill, T. Edahiro, “Fabrication of single-polarization single-mode-fibre couplers,” Electron. Lett. 18, 962–964 (1982).
[CrossRef]

Opt. Lett. (4)

Other (1)

D. Gruchmann, K. Petermann, L. Staudigel, E. Weidel, “Fiber-optic polarizers with high extinction ratio,” presented at the Ninth European Conference on Optical Communication, Geneva, Switzerland, October 1983.

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Figures (4)

Fig. 1
Fig. 1

Fabrication process of fiber-optic polarizing directional coupler.

Fig. 2
Fig. 2

Cross-sectional view of the fused region corresponding to Fig. 1(b).

Fig. 3
Fig. 3

Experimental setup for monitoring the polarization characteristics of couplers: a, LED (1.3 μm); b, d, microscope objectives; c, coupler; e, analyzer; f, detector; g, lock-in amplifier; h, oscillator; 1–1a, 2–2a, single-mode fibers; 3–3a, 4–4a dummy fibers.

Fig. 4
Fig. 4

Relation between coupling ratio and normalized coupling distance cz. Here c is the coupling coefficient and z is the interaction length. Four types of couplers (I, II, III, and IV) were prepared in the present experiment.

Tables (1)

Tables Icon

Table 1 Measured Excess Loss and Extinction Ratios of Polarizing Directional Couplers

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