Abstract

A method is presented for constructing a fiber-optic loop mirror whose reflectivity is tunable even though a fixed-ratio directional coupler is used. The tunability is polarization and wavelength independent and depends only on the geometry of the fiber-tuning element. This loop mirror can be used to transfer energy from one channel to another in a controllable way. We experimentally demonstrate the tunable reflectivity and present some experimental investigations.

© 2000 Optical Society of America

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References

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  1. D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
    [CrossRef]
  2. C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).
  3. O. J. Kwon, H. T. Lee, S. B. Lee, and S. S. Choi, Opt. Lett. 16, 223 (1997).
    [CrossRef]
  4. A. Tomita and R. Y. Chiao, Phys. Rev. Lett. 57, 937 (1986).
    [CrossRef] [PubMed]
  5. M. V. Berry, Proc. R. Soc. London Ser. A 392, 45 (1984).
    [CrossRef]
  6. P. G. Kwiat and R. Y. Chiao, Phys. Rev. Lett. 66, 588 (1991).
    [CrossRef] [PubMed]
  7. J. N. Ross, Opt. Quantum Electron. 16, 455 (1984).
    [CrossRef]
  8. S. G. Lipson, Opt. Lett. 15, 154 (1990).
    [CrossRef] [PubMed]
  9. J. Anandan, Nature 360, 307 (1992).
    [CrossRef]
  10. P. Senthilkumaran, B. Culshaw, and G. Thursby, “Fiber-optic Sagnac interferometer for the observation of Berry’s topological phase,” submitted to J. Opt. Soc. Am. B.
  11. P. Senthilkumaran, G. Thursby, and B. Culshaw, “Observation of Berry’s topological phase for unpolarized achromatic light using a fiber optic Sagnac interferometer,” submitted to Appl. Phys. Lett.

1997 (1)

1992 (1)

J. Anandan, Nature 360, 307 (1992).
[CrossRef]

1991 (1)

P. G. Kwiat and R. Y. Chiao, Phys. Rev. Lett. 66, 588 (1991).
[CrossRef] [PubMed]

1990 (1)

1988 (2)

D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
[CrossRef]

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

1986 (1)

A. Tomita and R. Y. Chiao, Phys. Rev. Lett. 57, 937 (1986).
[CrossRef] [PubMed]

1984 (2)

M. V. Berry, Proc. R. Soc. London Ser. A 392, 45 (1984).
[CrossRef]

J. N. Ross, Opt. Quantum Electron. 16, 455 (1984).
[CrossRef]

Ainslie, B. J.

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

Anandan, J.

J. Anandan, Nature 360, 307 (1992).
[CrossRef]

Berry, M. V.

M. V. Berry, Proc. R. Soc. London Ser. A 392, 45 (1984).
[CrossRef]

Chiao, R. Y.

P. G. Kwiat and R. Y. Chiao, Phys. Rev. Lett. 66, 588 (1991).
[CrossRef] [PubMed]

A. Tomita and R. Y. Chiao, Phys. Rev. Lett. 57, 937 (1986).
[CrossRef] [PubMed]

Choi, S. S.

Culshaw, B.

P. Senthilkumaran, B. Culshaw, and G. Thursby, “Fiber-optic Sagnac interferometer for the observation of Berry’s topological phase,” submitted to J. Opt. Soc. Am. B.

P. Senthilkumaran, G. Thursby, and B. Culshaw, “Observation of Berry’s topological phase for unpolarized achromatic light using a fiber optic Sagnac interferometer,” submitted to Appl. Phys. Lett.

Kwiat, P. G.

P. G. Kwiat and R. Y. Chiao, Phys. Rev. Lett. 66, 588 (1991).
[CrossRef] [PubMed]

Kwon, O. J.

Lee, H. T.

Lee, S. B.

Lipson, S. G.

Millar, C. A.

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

Miller, I. D.

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

Mortimore, D. B.

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
[CrossRef]

Ross, J. N.

J. N. Ross, Opt. Quantum Electron. 16, 455 (1984).
[CrossRef]

Senthilkumaran, P.

P. Senthilkumaran, B. Culshaw, and G. Thursby, “Fiber-optic Sagnac interferometer for the observation of Berry’s topological phase,” submitted to J. Opt. Soc. Am. B.

P. Senthilkumaran, G. Thursby, and B. Culshaw, “Observation of Berry’s topological phase for unpolarized achromatic light using a fiber optic Sagnac interferometer,” submitted to Appl. Phys. Lett.

Thursby, G.

P. Senthilkumaran, G. Thursby, and B. Culshaw, “Observation of Berry’s topological phase for unpolarized achromatic light using a fiber optic Sagnac interferometer,” submitted to Appl. Phys. Lett.

P. Senthilkumaran, B. Culshaw, and G. Thursby, “Fiber-optic Sagnac interferometer for the observation of Berry’s topological phase,” submitted to J. Opt. Soc. Am. B.

Tomita, A.

A. Tomita and R. Y. Chiao, Phys. Rev. Lett. 57, 937 (1986).
[CrossRef] [PubMed]

Urquhart, P.

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

J. Lightwave Technol. (1)

D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
[CrossRef]

Nature (1)

J. Anandan, Nature 360, 307 (1992).
[CrossRef]

Opt. Lett. (2)

Opt. Quantum Electron. (1)

J. N. Ross, Opt. Quantum Electron. 16, 455 (1984).
[CrossRef]

Phys. Rev. Lett. (2)

P. G. Kwiat and R. Y. Chiao, Phys. Rev. Lett. 66, 588 (1991).
[CrossRef] [PubMed]

A. Tomita and R. Y. Chiao, Phys. Rev. Lett. 57, 937 (1986).
[CrossRef] [PubMed]

Proc. Inst. Electr. Eng. Part J (1)

C. A. Millar, I. D. Miller, D. B. Mortimore, B. J. Ainslie, and P. Urquhart, Proc. Inst. Electr. Eng. Part J 135, 303 (1988).

Proc. R. Soc. London Ser. A (1)

M. V. Berry, Proc. R. Soc. London Ser. A 392, 45 (1984).
[CrossRef]

Other (2)

P. Senthilkumaran, B. Culshaw, and G. Thursby, “Fiber-optic Sagnac interferometer for the observation of Berry’s topological phase,” submitted to J. Opt. Soc. Am. B.

P. Senthilkumaran, G. Thursby, and B. Culshaw, “Observation of Berry’s topological phase for unpolarized achromatic light using a fiber optic Sagnac interferometer,” submitted to Appl. Phys. Lett.

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Figures (4)

Fig. 1
Fig. 1

Momentum space representation: px, py, and Pz are the x, y, and z components, respectively, of the momentum vector.

Fig. 2
Fig. 2

Fiber-optic tunable loop mirror H, helically wound fiber; PC, polarization controller; IO, output port; IR, return port; C1, C2, directional couplers.

Fig. 3
Fig. 3

Variation of intensity in the output and return ports as a function of Berry’s phase for monochromatic light in two different states of polarization. SOP1-D, Observed intensity at the direct port for input-light state of polarization 1. Similarly, SOP1-R stands for the observation at the return port, and so on.

Fig. 4
Fig. 4

Variation of intensity in the output and return ports as a function of Berry’s phase for unpolarized achromatic light.

Equations (2)

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IR=m1Ii21+cos2Nγ,
γ=±2π1-ps,

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