Abstract

We report a photonic crystal fiber with a depressed-index core doped with fluorine. The effective index of the cladding matches that of the core at an antiguiding wavelength, below which the fiber does not guide light at all.

© 2001 Optical Society of America

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References

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  1. J. C. Knight, T. A. Birks, P. St. J. Russell, and D. M. Atkin, Opt. Lett. 21, 1547 (1996).
    [CrossRef] [PubMed]
  2. J. C. Knight, T. A. Birks, P. St. J. Russell, and D. M. Atkin, Opt. Lett. 22, 484 (1997), erratum of Ref.  1.
    [CrossRef] [PubMed]
  3. T. A. Birks, J. C. Knight, and P. St. J. Russell, Opt. Lett. 22, 961 (1997).
    [CrossRef] [PubMed]
  4. J. Nishimura and K. Morishita, IEEE J. Lightwave Technol. 16, 990 (1998).
    [CrossRef]
  5. R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
    [CrossRef] [PubMed]

1999 (1)

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

1998 (1)

J. Nishimura and K. Morishita, IEEE J. Lightwave Technol. 16, 990 (1998).
[CrossRef]

1997 (2)

1996 (1)

Allen, D. C.

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

Atkin, D. M.

Birks, T. A.

Cregan, R. F.

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

Knight, J. C.

Mangan, B. J.

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

Morishita, K.

J. Nishimura and K. Morishita, IEEE J. Lightwave Technol. 16, 990 (1998).
[CrossRef]

Nishimura, J.

J. Nishimura and K. Morishita, IEEE J. Lightwave Technol. 16, 990 (1998).
[CrossRef]

Roberts, P. J.

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

Russell, P. St. J.

IEEE J. Lightwave Technol. (1)

J. Nishimura and K. Morishita, IEEE J. Lightwave Technol. 16, 990 (1998).
[CrossRef]

Opt. Lett. (3)

Science (1)

R. F. Cregan, B. J. Mangan, J. C. Knight, T. A. Birks, P. St. J. Russell, P. J. Roberts, and D. C. Allen, Science 285, 1537 (1999).
[CrossRef] [PubMed]

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Figures (4)

Fig. 1
Fig. 1

(a) Calculated effective refractive index of a typical1,2 PCF cladding with an air-hole diameter of 0.7 μm and a pitch of 3.5 μm. The refractive indices of (b) pure silica and (c) the fluorine-doped silica used in our experiments are also shown. For clarity, material dispersion has been ignored. A PCF with a fluorine-doped core becomes an antiguide at wavelengths shorter than λa.

Fig. 2
Fig. 2

Near-field images at the output endface of 30  mm of a depressed-core PCF with laser light of three different wavelengths coupled into the core.

Fig. 3
Fig. 3

Partially normalized transmission spectra of 1  m of the depressed-core PCF held straight (left-hand curve) and (other curves, left to right) with a 1-turn bend of radii 30, 15, 10, and 7  mm.

Fig. 4
Fig. 4

Measured wavelength of 3-dB loss at the short-wavelength bend edge (points) as a function of bend radius. The curve represents a typical variation expected for an undoped PCF.

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