Abstract

A filter-free fiber-XPM-based wavelength converter is proposed and experimentally demonstrated without conventional bandpass optical filters used to filter out the converted signal. The converter is constructed with a propagation-diversity Sagnac loop to separate a converted signal from a pump signal and a delayed interferometer to covert the XPM signal into intensity modulation. We show that 10-Gbit/s input signals are successfully converted to signals with allotted wavelengths by our proposed scheme.

© 2006 Optical Society of America

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References

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  1. G. P. Agrawal, Nonlinear fiber optics (Academic Press, New York, 1995).
  2. N. J. Doran and David Wood, "Nonlinear-optical loop mirror," Opt. Lett. 13, 56-58 (1988).
    [CrossRef] [PubMed]
  3. K. J. Bolow, N. J. Doran, B. K. Nayer, and B. P. Nelson, "Two-wavelength operation of the nonlinear fiber loop mirror," Opt. Lett. 15, 248-150 (1990).
    [CrossRef]
  4. M. Saruwatari, "All-optical signal processing for terabit/second optical transmission," IEEE J. Sel. Top. Quantum Electron. 6, 1363-1374 (2000).
    [CrossRef]
  5. M. Nakazawa, E. Yoshida, T. Yamamoto, E. Yamada, and A. Sahara, "TDM single channel 640Gbit/s transmission experiment over 60km using 400fs pulse train and walk-off free, dispersion flattened nonlinear optical loop mirror," Electron. Lett. 34, 907-908 (1998).
    [CrossRef]
  6. T. Sakamoto, F. Futami, K. Kikuchi, S. Takeda, Y. Sugaya, and S. Watanabe, "All-optical wavelength conversion of 500-fs pulse trains by using a nonlinear-optical loop mirror composed of a highly nonlinear DSF," IEEE Photon. Technol. Lett. 13, 502-504 (2001).
    [CrossRef]
  7. J. Yu, X. Zheng, C. Peucheret, A. T. Clausen, H. N. Poulsen, and P. Jeppesen, "40-Gb/s all-optical wavelength conversion base on a nonlinear optical loop mirror," IEEE J. Lightwave Technol. 18, 1001-1006 (2000).
    [CrossRef]
  8. J. W. Lou, J. K. Andersen, J. C. Stocker, M. N. Islam, and D. A. Nolan, "Polarization insensitive demultiplexing of 100-Gb/s words using a twisted fiber nonlinear optical loop mirror," IEEE Photon. Technol. Lett. 11, 1602-1604 (1999).
    [CrossRef]
  9. J. Yu, Y. Qian, P. Jeppesen, and S. N. Knudsen, "Broad-band and pulsewidth-maintained wavelength conversion based on a high nonlinearity DSF nonlinear optical loop mirror," IEEE Photon. Technol. Lett. 13, 344-346 (2001).
    [CrossRef]

Electron. Lett. (1)

M. Nakazawa, E. Yoshida, T. Yamamoto, E. Yamada, and A. Sahara, "TDM single channel 640Gbit/s transmission experiment over 60km using 400fs pulse train and walk-off free, dispersion flattened nonlinear optical loop mirror," Electron. Lett. 34, 907-908 (1998).
[CrossRef]

IEEE J. Lightwave Technol. (1)

J. Yu, X. Zheng, C. Peucheret, A. T. Clausen, H. N. Poulsen, and P. Jeppesen, "40-Gb/s all-optical wavelength conversion base on a nonlinear optical loop mirror," IEEE J. Lightwave Technol. 18, 1001-1006 (2000).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron. (1)

M. Saruwatari, "All-optical signal processing for terabit/second optical transmission," IEEE J. Sel. Top. Quantum Electron. 6, 1363-1374 (2000).
[CrossRef]

IEEE Photon. Technol. Lett. (3)

J. W. Lou, J. K. Andersen, J. C. Stocker, M. N. Islam, and D. A. Nolan, "Polarization insensitive demultiplexing of 100-Gb/s words using a twisted fiber nonlinear optical loop mirror," IEEE Photon. Technol. Lett. 11, 1602-1604 (1999).
[CrossRef]

J. Yu, Y. Qian, P. Jeppesen, and S. N. Knudsen, "Broad-band and pulsewidth-maintained wavelength conversion based on a high nonlinearity DSF nonlinear optical loop mirror," IEEE Photon. Technol. Lett. 13, 344-346 (2001).
[CrossRef]

T. Sakamoto, F. Futami, K. Kikuchi, S. Takeda, Y. Sugaya, and S. Watanabe, "All-optical wavelength conversion of 500-fs pulse trains by using a nonlinear-optical loop mirror composed of a highly nonlinear DSF," IEEE Photon. Technol. Lett. 13, 502-504 (2001).
[CrossRef]

Opt. Lett. (2)

N. J. Doran and David Wood, "Nonlinear-optical loop mirror," Opt. Lett. 13, 56-58 (1988).
[CrossRef] [PubMed]

K. J. Bolow, N. J. Doran, B. K. Nayer, and B. P. Nelson, "Two-wavelength operation of the nonlinear fiber loop mirror," Opt. Lett. 15, 248-150 (1990).
[CrossRef]

Other (1)

G. P. Agrawal, Nonlinear fiber optics (Academic Press, New York, 1995).

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Figures (4)

Fig. 1.
Fig. 1.

Basic configuration of the filter-free wavelength converter using Sagnac loop and self-delayed interferometer.

Fig. 2.
Fig. 2.

Output spectra from the Sagnac loop when the probe light wavelength is (a) 1542 and (b) 1547 nm.

Fig. 3.
Fig. 3.

Waveforms of the wavelength-converted signal. (a) input pump signal, (b) and (c) wavelength-converted signals at wavelengths of 1546nm and 1545m, respectively, (d) output waveform without probe light, (e) output waveform when the probe wavelength is the same as the signal wavelength (1544.5 nm). Δλ is a wavelength separation between signal and probe lights.

Fig. 4.
Fig. 4.

The measured eye-diagrams and BER curves as a function of the probe wavelength.

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