Abstract

We describe systematic measurements of the gain and delay spectra in a slow light system based on stimulated Brillouin scattering in optical fibers. The measurements yield the system complex transfer function with which delays and signal distortion can be calculated for any input signal. The theoretical predictions are confirmed experimentally for single pulses as well as 50 Mb/s data streams in a system which employs pump modulation to modify the gain and delay spectra of the SBS process.

© 2006 Optical Society of America

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References

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  1. R. W. Boyd and D. J. Gauthier, "Slow and Fast Light," in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 2002), Vol. 43 pp. 497-530.
  2. C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
    [CrossRef]
  3. L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
    [CrossRef]
  4. D. Strekalov, A. B. Matsko, and L. Maleki, " Nonlinear properties of electromagnetically induced transparency in Rubidium vapor," J. Opt. Soc. Am. B 22, 65-71(2005).
    [CrossRef]
  5. P. C. Ku, F. Sedgwick, C. J. Chang-Hasnain, P. Palinginis, T. Li, H. I. Wang, S W. Chang, and S. L. Chuang, "Slow light in semiconductor quantum wells," Opt. Lett. 29, 2291-2293 (2004).
    [CrossRef] [PubMed]
  6. M. van der Poel, J. Mork, and J. M. Hvam, Controllable delay of ultrashort pulses in a quantum dot optical amplifier," Opt. Express 13, 8032-8037 (2005).
    [CrossRef] [PubMed]
  7. H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
    [CrossRef] [PubMed]
  8. Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
    [CrossRef] [PubMed]
  9. K. Y. Song, M. G. Herraez, and L. Thevenaz, "Observation of pulse delaying and advancement in optical fiber using stimulated Brillouin scattering," Opt. Express 13, 82-88 (2005).
    [CrossRef] [PubMed]
  10. K. Y. Song, M. G. Herraez, and L. Thevenaz, "Long optically controlled delays in optical fibers," Opt. Lett. 30, 1782-1784 (2005).
    [CrossRef] [PubMed]
  11. J. E. Sharping, Y. Okawachi, and A. L. Gaeta, "Wide bandwidth slow light using a Raman fiber amplifier," Opt. Express 13, 6092-6098 (2005).
    [CrossRef] [PubMed]
  12. D. Dahan and G. Eisenstein, "Tunable all optical delay via slow and fast light propagation in a Raman assisted fiber optical parametric amplifier: a route to all optical buffering," Opt. Express 13, 6234-6249 (2005).
    [CrossRef] [PubMed]
  13. 13. J. E. Sharping, Y. Okawachi, J. van Howe, C. Xu, and A. Gaeta, "All-optical tunable, nanosecond delay using wavelength conversion and fiber dispersion," in proceedings of CLEO'05, paper CTuT1 (2005).
  14. M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes, and D. J. Gauthier, "Distortion management in slow-light pulse delay," Opt. Express 13, 9995-10002 (2005).
    [CrossRef] [PubMed]
  15. M. G. Herraez, A K. Y. Song, and L. Thevenaz, "Arbitrary-bandwidth Brillouin slow light in optical fibers," Opt. Express 14,1395-1400 (2006).
    [CrossRef]
  16. Z. Zhu, A. M. C. Dawes, D. J. Gauthier, L. Zhang, and A. E. Willner, "12-GHz-Bandwidth SBS Slow Light in Optical Fibers," in proceedings of OFC 2006, paper PD1 (2006).
  17. R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
    [CrossRef]
  18. R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Delay-bandwidth product and storage density in slow-light optical buffers," Elect. Lett. 41, 208-209 (2005).
    [CrossRef]
  19. R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Slow-light optical buffers: capabilities and fundamental limitations," J. Lightwave Technol. 23, 4046-4066 (2005).
    [CrossRef]
  20. C. Yu, L. Zhang, A. E. Willner, "Distortion effects on data pulses in a slow light tunable delay line due to stimulated Brillouin scattering in a highly nonlinear fiber," in proceedings of ECOC 2005, paper Mo 4.5.2.
  21. A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).
  22. G.P. Agrawal, "Fiber-optic communication systems", 3rd Ed., (Wiley, 2002).

2006

2005

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Delay-bandwidth product and storage density in slow-light optical buffers," Elect. Lett. 41, 208-209 (2005).
[CrossRef]

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Slow-light optical buffers: capabilities and fundamental limitations," J. Lightwave Technol. 23, 4046-4066 (2005).
[CrossRef]

D. Strekalov, A. B. Matsko, and L. Maleki, " Nonlinear properties of electromagnetically induced transparency in Rubidium vapor," J. Opt. Soc. Am. B 22, 65-71(2005).
[CrossRef]

M. van der Poel, J. Mork, and J. M. Hvam, Controllable delay of ultrashort pulses in a quantum dot optical amplifier," Opt. Express 13, 8032-8037 (2005).
[CrossRef] [PubMed]

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

K. Y. Song, M. G. Herraez, and L. Thevenaz, "Observation of pulse delaying and advancement in optical fiber using stimulated Brillouin scattering," Opt. Express 13, 82-88 (2005).
[CrossRef] [PubMed]

K. Y. Song, M. G. Herraez, and L. Thevenaz, "Long optically controlled delays in optical fibers," Opt. Lett. 30, 1782-1784 (2005).
[CrossRef] [PubMed]

J. E. Sharping, Y. Okawachi, and A. L. Gaeta, "Wide bandwidth slow light using a Raman fiber amplifier," Opt. Express 13, 6092-6098 (2005).
[CrossRef] [PubMed]

D. Dahan and G. Eisenstein, "Tunable all optical delay via slow and fast light propagation in a Raman assisted fiber optical parametric amplifier: a route to all optical buffering," Opt. Express 13, 6234-6249 (2005).
[CrossRef] [PubMed]

M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes, and D. J. Gauthier, "Distortion management in slow-light pulse delay," Opt. Express 13, 9995-10002 (2005).
[CrossRef] [PubMed]

2004

2003

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

2001

A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).

1999

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Behroozi, C. H.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Benito, D.

A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).

Bigelow, M. S.

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Bogaerts, W.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Boyd, R. W.

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Chang, S W.

Chang-Hasnain, C. J.

Chang-Hasnian, C. J.

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

Chuang, S. L.

P. C. Ku, F. Sedgwick, C. J. Chang-Hasnain, P. Palinginis, T. Li, H. I. Wang, S W. Chang, and S. L. Chuang, "Slow light in semiconductor quantum wells," Opt. Lett. 29, 2291-2293 (2004).
[CrossRef] [PubMed]

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

Dahan, D.

Dawes, A. M. C.

Dutton, Z.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Eisenstein, G.

Engelen, R. J.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Gaeta, A.

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Gaeta, A. L.

J. E. Sharping, Y. Okawachi, and A. L. Gaeta, "Wide bandwidth slow light using a Raman fiber amplifier," Opt. Express 13, 6092-6098 (2005).
[CrossRef] [PubMed]

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

Garde, M. J.

A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).

Gauthier, D. J.

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes, and D. J. Gauthier, "Distortion management in slow-light pulse delay," Opt. Express 13, 9995-10002 (2005).
[CrossRef] [PubMed]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Gersen, H.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Harris, S. E.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Hau, L. V.

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Herraez, M. G.

Herra'ez, M. G.

Hvam, J. M.

Karle, T. J.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Kim, J.

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

Korterik, J. P.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Krauss, T. F.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Ku, P. C.

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Delay-bandwidth product and storage density in slow-light optical buffers," Elect. Lett. 41, 208-209 (2005).
[CrossRef]

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Slow-light optical buffers: capabilities and fundamental limitations," J. Lightwave Technol. 23, 4046-4066 (2005).
[CrossRef]

P. C. Ku, F. Sedgwick, C. J. Chang-Hasnain, P. Palinginis, T. Li, H. I. Wang, S W. Chang, and S. L. Chuang, "Slow light in semiconductor quantum wells," Opt. Lett. 29, 2291-2293 (2004).
[CrossRef] [PubMed]

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

Kuipers, L.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Li, T.

Loayssa, A.

A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).

Maleki, L.

Matsko, A. B.

Mork, J.

Neifeld, M. A.

Okawachi, Y.

J. E. Sharping, Y. Okawachi, and A. L. Gaeta, "Wide bandwidth slow light using a Raman fiber amplifier," Opt. Express 13, 6092-6098 (2005).
[CrossRef] [PubMed]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Palinginis, P.

Schweinsberg, A.

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Sedgwick, F.

Sharping, J.

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Sharping, J. E.

Song, A K. Y.

Song, K. Y.

Stenner, M. D.

Strekalov, D.

Thevenaz, L.

Tucker, R. S.

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Delay-bandwidth product and storage density in slow-light optical buffers," Elect. Lett. 41, 208-209 (2005).
[CrossRef]

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Slow-light optical buffers: capabilities and fundamental limitations," J. Lightwave Technol. 23, 4046-4066 (2005).
[CrossRef]

van der Poel, M.

van Hulst, N. F.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Wang, H. I.

Willner, A. E.

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

Zhu, Z.

M. D. Stenner, M. A. Neifeld, Z. Zhu, A. M. C. Dawes, and D. J. Gauthier, "Distortion management in slow-light pulse delay," Opt. Express 13, 9995-10002 (2005).
[CrossRef] [PubMed]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Elect. Lett.

R. S. Tucker, P. C. Ku, and C. J. Chang-Hasnain, "Delay-bandwidth product and storage density in slow-light optical buffers," Elect. Lett. 41, 208-209 (2005).
[CrossRef]

IEE Proceedings

A. Loayssa, D. Benito, M. J. Garde, "High-resolution measurement if stimulated Brillouin scattering spectra in single-mode fibers," IEE Proceedings 148,143-148 (2001).

J. Lightwave Technol.

J. Opt. Soc. Am. B

Nature

L. V. Hau, S. E. Harris, Z. Dutton, and C. H. Behroozi, "Light speed reduction to 17 meters per second in an ultracold atomic gas," Nature 397, 594-598 (1999).
[CrossRef]

Opt. Express

Opt. Lett.

Phys. Rev. A

R. W. Boyd, D. J. Gauthier, A. L. Gaeta, and A. E. Willner, "Maximum time delay achievable on propagation through a slow-light medium," Phys. Rev. A 71,023801, (2005).
[CrossRef]

Phys. Rev. Lett.

H. Gersen, T. J. Karle, R. J. Engelen, W. Bogaerts, J. P. Korterik, N. F. van Hulst, T. F. Krauss, and L. Kuipers, "Real-space observation of ultraslow light in Photonic Crystal Waveguides," Phys. Rev. Lett. 94,073903 (2005).
[CrossRef] [PubMed]

Y. Okawachi, M. S. Bigelow, J. Sharping, Z. Zhu, A. Schweinsberg, D. J. Gauthier, R. W. Boyd, and A. Gaeta, "Tunable all-optical delays via Brillouin slow light in an optical fiber," Phys. Rev. Lett. 94, 153902 (2005).
[CrossRef] [PubMed]

Proceedings of IEEE

C. J. Chang-Hasnian, P. C. Ku, J. Kim, and S. L. Chuang, "Variable optical buffer using slow light in semiconductor nanostructures," Proceedings of IEEE 11, 1884-1897 (2003).
[CrossRef]

Other

R. W. Boyd and D. J. Gauthier, "Slow and Fast Light," in Progress in Optics, E. Wolf, ed. (Elsevier, Amsterdam, 2002), Vol. 43 pp. 497-530.

C. Yu, L. Zhang, A. E. Willner, "Distortion effects on data pulses in a slow light tunable delay line due to stimulated Brillouin scattering in a highly nonlinear fiber," in proceedings of ECOC 2005, paper Mo 4.5.2.

Z. Zhu, A. M. C. Dawes, D. J. Gauthier, L. Zhang, and A. E. Willner, "12-GHz-Bandwidth SBS Slow Light in Optical Fibers," in proceedings of OFC 2006, paper PD1 (2006).

13. J. E. Sharping, Y. Okawachi, J. van Howe, C. Xu, and A. Gaeta, "All-optical tunable, nanosecond delay using wavelength conversion and fiber dispersion," in proceedings of CLEO'05, paper CTuT1 (2005).

G.P. Agrawal, "Fiber-optic communication systems", 3rd Ed., (Wiley, 2002).

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Figures (9)

Fig. 1.
Fig. 1.

Schematics of small signal SBS gain characterization

Fig. 2.
Fig. 2.

Measured gain, phase and delay spectra for different levels of an unmodulated pump

Fig. 3.
Fig. 3.

Measured gain phase and delay spectra for a +13 dBm pump which is sinusoidally modulated at different frequencies

Fig. 4.
Fig. 4.

measured gain phase and delay spectra for a +13 dBm pump, modulated by a PRBS sequence at different rates

Fig. 5.
Fig. 5.

Experimental set up for large signal measurements

Fig. 6.
Fig. 6.

Measured (solid lines) and calculated (broken lines) delayed pulse response. (a) 20 nsec pulse with no pump modulation. (b) 20 nsec pulse with sinusoidal pump modulation. (c) 120 nsec pulse with sinusoidal pump modulation. (d) 20 nsec pulse with broad band pump modulation

Fig. 7.
Fig. 7.

Measured (green) and calculated (red) responses of a 50 Mb/s PRBS. The blue trace represents the output with no pump. (a) unmodulated pump (b) sinusoidally modulated pump at 10 MHz (c) sinusoidally modulated pump at 20 MHz

Fig. 8.
Fig. 8.

Measured (green) and calculated (red) responses of a 50 Mb/s pseudo random data signal with pseudo random pump modulation. The blue trace represents the output with no pump (a) 75 Mb/s (b) 125 Mb/s (c) 250 Mb/s

Fig. 9.
Fig. 9.

Delay and normalized eye opening versus pseudo random pump modulation rate

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