Abstract

We demonstrate simultaneous stabilized operation of a mode locked ring fiber laser at two wavelengths. At one of the wavelengths the mode locked operation is at 10 GHz and it is at 40 GHz at the second wavelength. The laser has an intracavity LiNbO3 modulator driven at 10 GHz. The 40 GHz pulses are obtained by rational harmonic mode locking. Pulses with widths in 5 to 8 ps range are obtained. Mode locking at 40 GHz for both wavelengths has also been demonstrated.

© 2004 Optical Society of America

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References

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  1. R. Hayashi, S. Yamashita, and T. Said, �??16-wavelength 10-GHz actively mode-locked fiber laser with demultiplexed outputs anchored on the ITU-T grid,�?? IEEE Photon. Technol. Lett. 15, 1692- 1694 (2003).
    [CrossRef]
  2. S. Li, K. T. Chan, �??A novel configuration for multiwavelength actively mode-locked fiber lasers using cascaded fiber Bragg gratings,�?? IEEE Photon. Technol. Lett. 11, 179-181 (1999).
    [CrossRef]
  3. D. Pudo, L. R. Chen, D. Giannone, L. Zhang and I. Bennion, �??Actively Mode-Locked Tunable Dual- Wavelength Erbium-Doped Fiber Laser,�?? IEEE Photon. Technol. Lett. 14, 143 -145 (2002)
    [CrossRef]
  4. C. Wu and N. K. Dutta, �??High-repetition-rate optical pulse generation using a rational harmonic modelocked fiber laser,�?? IEEE J. Quant. Electron. 36, 145-150 (2000)
    [CrossRef]
  5. L. E. Nelson, D. J. Jones, K. Tamura, H. A. Haus and E. P. Ippen, �??Ultrashort-pulse fiber ring lasers,�?? Appl. Phys. B. 65, 277�??294 (1997)
    [CrossRef]
  6. H. Chen, G. Zhu, N. K. Dutta and K. Dreyer, �??Suppression of self-pulsing behavior in erbium-doped fiber lasers with a semiconductor optical amplifier,�?? Appl. Opt. 41, 3511-3516 (2002)
    [CrossRef] [PubMed]
  7. Anthony E. Siegman, Lasers (University Science Books, 1986)

Appl. Opt. (1)

Appl. Phys. B. (1)

L. E. Nelson, D. J. Jones, K. Tamura, H. A. Haus and E. P. Ippen, �??Ultrashort-pulse fiber ring lasers,�?? Appl. Phys. B. 65, 277�??294 (1997)
[CrossRef]

IEEE J. Quant. Electron. (1)

C. Wu and N. K. Dutta, �??High-repetition-rate optical pulse generation using a rational harmonic modelocked fiber laser,�?? IEEE J. Quant. Electron. 36, 145-150 (2000)
[CrossRef]

IEEE Photon. Technol. Lett. (3)

R. Hayashi, S. Yamashita, and T. Said, �??16-wavelength 10-GHz actively mode-locked fiber laser with demultiplexed outputs anchored on the ITU-T grid,�?? IEEE Photon. Technol. Lett. 15, 1692- 1694 (2003).
[CrossRef]

S. Li, K. T. Chan, �??A novel configuration for multiwavelength actively mode-locked fiber lasers using cascaded fiber Bragg gratings,�?? IEEE Photon. Technol. Lett. 11, 179-181 (1999).
[CrossRef]

D. Pudo, L. R. Chen, D. Giannone, L. Zhang and I. Bennion, �??Actively Mode-Locked Tunable Dual- Wavelength Erbium-Doped Fiber Laser,�?? IEEE Photon. Technol. Lett. 14, 143 -145 (2002)
[CrossRef]

Other (1)

Anthony E. Siegman, Lasers (University Science Books, 1986)

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Figures (5)

Fig. 1.
Fig. 1.

Schematic of two-wavelength fiber ring laser.

Fig. 2.
Fig. 2.

Pulse trains observed by autocorrelator. (a) 40GHz pulse train with pulse width of 5ps (b) 10GHz pulse train with pulse width of 8ps

Fig. 3.
Fig. 3.

Spectrum of the pulses at wavelength of 1546 nm (40 GHz) and 1558nm (10 GHz) respectively.

Fig. 4.
Fig. 4.

40GHz Pulse trains with wavelengh of (Left) 1546nm and (Right) 1558nm.

Fig. 5.
Fig. 5.

Stability of pulse train (a) intensity and pulse form of 40 GHz pulse train with SOA and PLL in the fiber ring. (b) Intensity and pulse form of 40 GHz pulse train without SOA and PLL in the fiber ring.

Equations (6)

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f m = N · f c 1 = N · c n eff L 1
f m = ( M + 1 p ) · c n eff L 2
N · c n eff L 1 = ( M + 1 p ) . c n eff L 2
Δ L = ( M N + 1 p ) · L 1 N
L 1 N = c n eff f m = 100 ps
Δ L = ( M N + 1 p ) · L 1 N = 100 · ( M N ) + 25 ps

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