Abstract

The effect of variations in the Ge, B, P, and OH content on the radiation response of Ge-doped silica-core optical fiber waveguides has been measured at 0.82 and 1.3 μm. It has been established that variations in neither OH content nor Ge concentration affect the response of these fibers. B doping increases the loss at short times following pulsed irradiation, whereas P suppresses the intense Ge-related transient absorption at both 0.82 and 1.3 μm while inhibiting long-term recovery. Since there is a minimum in the induced loss near 1.1–1.2 μm in P-doped fibers, the damage at 1.55 μm is significantly higher than that at 1.3 μm.

© 1980 Optical Society of America

Full Article  |  PDF Article

References

  • View by:
  • |
  • |
  • |

  1. E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
    [Crossref]
  2. E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
    [Crossref]
  3. E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Fiber Optics: Advances in Research and Development, B. Bendow, S. S. Mitra, Eds. (Plenum, New York, 1979), p. 355.
    [Crossref]
  4. E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.
  5. For a review of radiation damage in fiber optic waveguides, see E. J. Friebele, Opt. Eng. 18, 552 (1979).
    [Crossref]
  6. P. C. Schultz, in Ref. 3, p. 3.
  7. E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
    [Crossref]
  8. G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
    [Crossref]
  9. S. Share, J. Wasilik, IEEE Trans. Nucl. Sci. NS-26, 4802 (1979).
    [Crossref]
  10. For a review of radiation damage in glass, see E. J. Friebele, D. L. Griscom, in Treatise on Materials Science, Vol. 17: Glass II, M. Tomozawa, R. H. Doremus, Eds. (Academic, New York, 1979), p. 257.
  11. K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
    [Crossref]
  12. P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).
  13. P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
    [Crossref]
  14. E. J. Friebele, M. E. Gingerich, in Proceedings Symposium on the Physics of Fiber Optics, B. Bendow, S. S. Mitra, Eds. (America Ceramic Society, Columbus, Ohio, in press).
  15. S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
    [Crossref]
  16. J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
    [Crossref]
  17. E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Proceedings of Fourth European Conference on Optical Communication, Genoa, Italy (1978), p. 80.
  18. P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.
  19. P. B. Lyons, private communication (1979).
  20. D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
    [Crossref]
  21. E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.
  22. J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
    [Crossref]
  23. E. J. Friebele, M. E. Gingerich, in Proceedings, Twelfth International Congress on Glass, Albuquerque, N.Mex. (1980), J. Non-Cryst. Solids 38-39, 245 (1980).
    [Crossref]

1980 (1)

E. J. Friebele, M. E. Gingerich, in Proceedings, Twelfth International Congress on Glass, Albuquerque, N.Mex. (1980), J. Non-Cryst. Solids 38-39, 245 (1980).
[Crossref]

1979 (3)

For a review of radiation damage in fiber optic waveguides, see E. J. Friebele, Opt. Eng. 18, 552 (1979).
[Crossref]

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

S. Share, J. Wasilik, IEEE Trans. Nucl. Sci. NS-26, 4802 (1979).
[Crossref]

1978 (4)

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
[Crossref]

S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
[Crossref]

1977 (1)

J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
[Crossref]

1975 (1)

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

1974 (2)

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
[Crossref]

1973 (1)

D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
[Crossref]

1971 (1)

K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
[Crossref]

Aggarwal, I.

S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
[Crossref]

Barsis, E. H.

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

Bates, J. B.

J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
[Crossref]

Brandon, J. R.

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

Chernov, P. V.

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

Dianov, E. M.

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

Friebele, E. J.

E. J. Friebele, M. E. Gingerich, in Proceedings, Twelfth International Congress on Glass, Albuquerque, N.Mex. (1980), J. Non-Cryst. Solids 38-39, 245 (1980).
[Crossref]

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

For a review of radiation damage in fiber optic waveguides, see E. J. Friebele, Opt. Eng. 18, 552 (1979).
[Crossref]

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Fiber Optics: Advances in Research and Development, B. Bendow, S. S. Mitra, Eds. (Plenum, New York, 1979), p. 355.
[Crossref]

E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.

For a review of radiation damage in glass, see E. J. Friebele, D. L. Griscom, in Treatise on Materials Science, Vol. 17: Glass II, M. Tomozawa, R. H. Doremus, Eds. (Academic, New York, 1979), p. 257.

E. J. Friebele, M. E. Gingerich, in Proceedings Symposium on the Physics of Fiber Optics, B. Bendow, S. S. Mitra, Eds. (America Ceramic Society, Columbus, Ohio, in press).

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Proceedings of Fourth European Conference on Optical Communication, Genoa, Italy (1978), p. 80.

Gingerich, M. E.

E. J. Friebele, M. E. Gingerich, in Proceedings, Twelfth International Congress on Glass, Albuquerque, N.Mex. (1980), J. Non-Cryst. Solids 38-39, 245 (1980).
[Crossref]

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
[Crossref]

E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Fiber Optics: Advances in Research and Development, B. Bendow, S. S. Mitra, Eds. (Plenum, New York, 1979), p. 355.
[Crossref]

E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Proceedings of Fourth European Conference on Optical Communication, Genoa, Italy (1978), p. 80.

E. J. Friebele, M. E. Gingerich, in Proceedings Symposium on the Physics of Fiber Optics, B. Bendow, S. S. Mitra, Eds. (America Ceramic Society, Columbus, Ohio, in press).

Golob, J. E.

J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
[Crossref]

P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.

Griscom, D. L.

For a review of radiation damage in glass, see E. J. Friebele, D. L. Griscom, in Treatise on Materials Science, Vol. 17: Glass II, M. Tomozawa, R. H. Doremus, Eds. (Academic, New York, 1979), p. 257.

Hayden, L. M.

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.

Hendricks, R. W.

J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
[Crossref]

Jaeger, R. E.

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

Keck, D. B.

D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
[Crossref]

Kelly, R. E.

P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.

Kornienko, L. S.

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

Lengweiler, K.

K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
[Crossref]

Levy, P. W.

K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
[Crossref]

Looney, L. D.

J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
[Crossref]

P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.

Lyons, P. B.

P. B. Lyons, private communication (1979).

P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.

Lyons, P. M.

J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
[Crossref]

Mattern, P. L.

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
[Crossref]

Maurer, R. D.

D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
[Crossref]

McCracken, R. M.

S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
[Crossref]

Nikitin, E. P.

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

Rybaltovsky, A. O.

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

Schultz, P. C.

D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
[Crossref]

P. C. Schultz, in Ref. 3, p. 3.

E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.

Shaffer, L. B.

J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
[Crossref]

Share, S.

S. Share, J. Wasilik, IEEE Trans. Nucl. Sci. NS-26, 4802 (1979).
[Crossref]

S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
[Crossref]

Sigel, G. H.

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Fiber Optics: Advances in Research and Development, B. Bendow, S. S. Mitra, Eds. (Plenum, New York, 1979), p. 355.
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Proceedings of Fourth European Conference on Optical Communication, Genoa, Italy (1978), p. 80.

Skoog, C. D.

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

Wasilik, J.

S. Share, J. Wasilik, IEEE Trans. Nucl. Sci. NS-26, 4802 (1979).
[Crossref]

Watkins, L. M.

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

Appl. Phys. Lett. (3)

E. J. Friebele, M. E. Gingerich, G. H. Sigel, Appl. Phys. Lett. 32, 619 (1978).
[Crossref]

E. J. Friebele, R. E. Jaeger, G. H. Sigel, M. E. Gingerich, Appl. Phys. Lett. 32, 95 (1978).
[Crossref]

D. B. Keck, R. D. Maurer, P. C. Schultz, Appl. Phys. Lett. 22, 307 (1973).
[Crossref]

IEEE Trans. Nucl. Sci. (7)

G. H. Sigel, E. J. Friebele, M. E. Gingerich, L. M. Hayden, IEEE Trans. Nucl. Sci. NS-26, 4796 (1979).
[Crossref]

S. Share, J. Wasilik, IEEE Trans. Nucl. Sci. NS-26, 4802 (1979).
[Crossref]

E. J. Friebele, G. H. Sigel, M. E. Gingerich, IEEE Trans. Nucl. Sci. NS-25, 1261 (1978).
[Crossref]

P. L. Mattern, L. M. Watkins, C. D. Skoog, J. R. Brandon, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-21, 81 (1974).

P. L. Mattern, L. M. Watkins, C. D. Skoog, E. H. Barsis, IEEE Trans. Nucl. Sci. NS-22, 2468 (1975).
[Crossref]

S. Share, R. M. McCracken, I. Aggarwal, IEEE Trans. Nucl. Sci. NS-25, 1288 (1978).
[Crossref]

J. E. Golob, P. M. Lyons, L. D. Looney, IEEE Trans. Nucl. Sci. NS-24, 2164 (1977).
[Crossref]

J. Non-Cryst. Solids (1)

E. J. Friebele, M. E. Gingerich, in Proceedings, Twelfth International Congress on Glass, Albuquerque, N.Mex. (1980), J. Non-Cryst. Solids 38-39, 245 (1980).
[Crossref]

J. Phys. Chem. (1)

J. B. Bates, R. W. Hendricks, L. B. Shaffer, J. Phys. Chem. 61, 4163 (1974).
[Crossref]

Opt. Eng. (1)

For a review of radiation damage in fiber optic waveguides, see E. J. Friebele, Opt. Eng. 18, 552 (1979).
[Crossref]

Phys. Rev. Lett. (1)

K. Lengweiler, P. L. Mattern, P. W. Levy, Phys. Rev. Lett. 26, 1375 (1971).
[Crossref]

Other (9)

E. M. Dianov, E. P. Nikitin, L. S. Kornienko, A. O. Rybaltovsky, P. V. Chernov, in Ref. 4, p. 38.

P. C. Schultz, in Ref. 3, p. 3.

E. J. Friebele, M. E. Gingerich, in Proceedings Symposium on the Physics of Fiber Optics, B. Bendow, S. S. Mitra, Eds. (America Ceramic Society, Columbus, Ohio, in press).

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Proceedings of Fourth European Conference on Optical Communication, Genoa, Italy (1978), p. 80.

P. B. Lyons, L. D. Looney, J. E. Golob, R. E. Kelly, in Ref. 4, p. 36.

P. B. Lyons, private communication (1979).

E. J. Friebele, G. H. Sigel, M. E. Gingerich, in Fiber Optics: Advances in Research and Development, B. Bendow, S. S. Mitra, Eds. (Plenum, New York, 1979), p. 355.
[Crossref]

E. J. Friebele, P. C. Schultz, M. E. Gingerich, L. M. Hayden, In Digest of Topical Meeting on Optical Fiber Communication (Optical Society of America, Washington, D.C., 1979), p. 36.

For a review of radiation damage in glass, see E. J. Friebele, D. L. Griscom, in Treatise on Materials Science, Vol. 17: Glass II, M. Tomozawa, R. H. Doremus, Eds. (Academic, New York, 1979), p. 257.

Cited By

OSA participates in Crossref's Cited-By Linking service. Citing articles from OSA journals and other participating publishers are listed here.

Alert me when this article is cited.


Figures (6)

Fig. 1
Fig. 1

Growth of radiation-induced attenuation at 0.82 μm in Ge-doped silica-core fibers from various manufacturers during steady-state room temperature irradiation by a 60Co (1.1-MeV) source. Fibers included were provided by Corning Glass Works (CGW), International Telephone and Telegraph (ITT), Bell Telephone Laboratories (BTL), Jena Glaswerk Schott & Gen. (JGS), and Galileo Electro-Optics (GEO). Discontinuity near 300 rad in the data of the lower four curves occurs when P-free fibers are moved from the low dose rate position (400 rad/min) used to irradiate all fibers ≲300 rad to the high dose rate position (12,000 rad/min) used to irradiate all the fibers ≳300 rad (see text).

Fig. 2
Fig. 2

Growth of radiation-induced-attenuation at 0.82 μm in Ge-doped silica core fibers either undoped or codoped with B and/or P during steady-state irradiation.

Fig. 3
Fig. 3

Growth of radiation-induced attenuation at 1.3 μm in Ge-doped silica-core fibers during steady-state irradiation. Note the decreased radiation response of these fibers at 1.3 μm υisàυis 0.82 μm (Fig. 2).

Fig. 4
Fig. 4

Time evolution of the radiation-induced attenuation at 0.82 μm in (a) Ge–B-doped silica and Ge-doped silica and (b) Ge–P-doped silica and Ge–B-P-doped silica-core optical fibers following a 3-nsec 3700-rad pulsed electron irradiation. Dose rate = 1.2 × 1012 rad/sec; T = 300 K.

Fig. 5
Fig. 5

Time evolution of the radiation-induced attenuation of Ge-doped silica-core fibers at 1.3 μm following a pulsed electron irradiation of 360,000 rad. Dose rate = 1.2 × 1014 rad/sec; T = 300 K.

Fig. 6
Fig. 6

Optical spectra of the radiation-induced absorption of Ge-doped silica-core optical waveguides measured 1 h after a 60Co irradiation of 105 rad. High index-matching oil (n = 1.67) was used to strip the cladding modes. Short dashed lines in some curves near 1.4 μm indicate that the large intrinsic absorption of the second OH overtone band at 1.37 μm made determination of radiation-induced changes in this band impossible in these high OH content fibers, although such changes could have been easily detected in the third overtone band at 0.95 μm. The second overtone band at 1.37 μm could be used with confidence in fibers with lower OH content.

Tables (2)

Tables Icon

Table I Core Compositiona (wt. %) and OH Content (ppm) of Fibers Studied

Tables Icon

Table II Radiation-induced Loss (dB/km) at 0.82 and 1.3 μm in Ge-Doped Silica-Core Optical Fibers Measured During Steady-State 60Co Irradiation

Metrics