Abstract

A spacing-tunable multiwavelength Raman fiber laser with an independently-adjustable channel number is proposed and demonstrated. It uses a novel free-spectral-range (FSR)-tunable comb filter based on a superimposed chirped-fiber Bragg grating (CFBG) and a linear cavity formed by a bandwidth-tunable CFBG reflector, a pumped highly-nonlinear fiber for Raman gain, and an optical circulator based loop mirror. Multiwavelength laser operations with spacing tuning from 0.3 to 0.6 nm and channel number adjustment from 2 to 10 have been achieved.

© 2006 Optical Society of America

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References

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  1. A. Bellemare, M. Karasek, M. Rochette, S. LaRochelle, and M. Tetu, "Room temperature multifrequency erbium-doped fiber lasers anchored on the ITU frequency grid," J. Lightwave Technol. 18, 825-831 (2000).
    [CrossRef]
  2. S. Yamashita and T. Baba, "Spacing-tunable multiwavelength fibre laser," Electron. Lett. 37, 1015-1017 (2001).
    [CrossRef]
  3. H. Chen, "Multiwavelength fiber ring lasing by use of a semiconductor optical amplifier," Opt. Lett. 30, 619-621 (2005).
    [CrossRef] [PubMed]
  4. X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
    [CrossRef]
  5. C. S. Kim, R. M. Sova, J. U. Kang, and J. B. Khurgin, "Novel multiwavelength cascaded-Raman source based on tunable fiber Sagnac loop filter," in Tech. Dig. OFC 2002, paper WJ1 (2002).
  6. Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
    [CrossRef]
  7. L. R. Chen, "Tunable multiwavelength fiber ring lasers using a programmable high-birefringence fiber loop mirror," IEEE Photon. Technol. Lett. 16, 410-412 (2004).
    [CrossRef]
  8. S. Yamashita, and K. Hotate, "Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen," Electron. Lett. 32, 1298-1299 (1996).
    [CrossRef]
  9. Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
    [CrossRef]
  10. M. Tang, P. Shum, and Y. D. Gong, "Design of double-pass discrete Raman amplifier and the impairments induced by Rayleigh backscattering," Opt. Express 11, 1887-1893 (2003)
    [CrossRef] [PubMed]
  11. X. Dong, P. Shum, N. Q. Ngo, C. C. Chan, J. H. Ng, and C.-L. Zhao, "Largely tunable CFBG-based dispersion compensator with fixed center wavelength," Opt. Express 11, 2970-2974 (2003)
    [CrossRef] [PubMed]
  12. S. Doucet, R. Slavik, and S. LaRochelle, "High-finesse large band Fabry-Perot fibre filter with superimposed chirped Bragg gratings," Electron. Lett. 38, 402-403 (2002).
    [CrossRef]
  13. R. Slavik, S. Doucet, and S. LaRochelle, "High-performance all-fiber Fabry-Perot filters with superimposed chirped Bragg gratings," J. Lightwave Technol. 21, 1059-1065 (2003).
    [CrossRef]

2005 (3)

H. Chen, "Multiwavelength fiber ring lasing by use of a semiconductor optical amplifier," Opt. Lett. 30, 619-621 (2005).
[CrossRef] [PubMed]

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

2004 (1)

L. R. Chen, "Tunable multiwavelength fiber ring lasers using a programmable high-birefringence fiber loop mirror," IEEE Photon. Technol. Lett. 16, 410-412 (2004).
[CrossRef]

2003 (4)

2002 (1)

S. Doucet, R. Slavik, and S. LaRochelle, "High-finesse large band Fabry-Perot fibre filter with superimposed chirped Bragg gratings," Electron. Lett. 38, 402-403 (2002).
[CrossRef]

2001 (1)

S. Yamashita and T. Baba, "Spacing-tunable multiwavelength fibre laser," Electron. Lett. 37, 1015-1017 (2001).
[CrossRef]

2000 (1)

1996 (1)

S. Yamashita, and K. Hotate, "Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen," Electron. Lett. 32, 1298-1299 (1996).
[CrossRef]

Baba, T.

S. Yamashita and T. Baba, "Spacing-tunable multiwavelength fibre laser," Electron. Lett. 37, 1015-1017 (2001).
[CrossRef]

Bellemare, A.

Chan, C. C.

Chen, H.

Chen, L. R.

L. R. Chen, "Tunable multiwavelength fiber ring lasers using a programmable high-birefringence fiber loop mirror," IEEE Photon. Technol. Lett. 16, 410-412 (2004).
[CrossRef]

Chung, Y.

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

Dong, X.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

X. Dong, P. Shum, N. Q. Ngo, C. C. Chan, J. H. Ng, and C.-L. Zhao, "Largely tunable CFBG-based dispersion compensator with fixed center wavelength," Opt. Express 11, 2970-2974 (2003)
[CrossRef] [PubMed]

Doucet, S.

R. Slavik, S. Doucet, and S. LaRochelle, "High-performance all-fiber Fabry-Perot filters with superimposed chirped Bragg gratings," J. Lightwave Technol. 21, 1059-1065 (2003).
[CrossRef]

S. Doucet, R. Slavik, and S. LaRochelle, "High-finesse large band Fabry-Perot fibre filter with superimposed chirped Bragg gratings," Electron. Lett. 38, 402-403 (2002).
[CrossRef]

Gong, Y. D.

Han, Y. G.

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

Han, Y.-G.

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

Hotate, K.

S. Yamashita, and K. Hotate, "Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen," Electron. Lett. 32, 1298-1299 (1996).
[CrossRef]

Kang, J. U.

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

Karasek, M.

Kim, C.-S.

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

Kim, G.

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

Kim, S. H.

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

LaRochelle, S.

Lee, J. H.

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

Lee, S. B.

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

Lu, C.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Lu, F.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Ng, J. H.

Ngo, N. Q.

Paek, U.-C.

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

Rochette, M.

Shum, P.

Slavik, R.

R. Slavik, S. Doucet, and S. LaRochelle, "High-performance all-fiber Fabry-Perot filters with superimposed chirped Bragg gratings," J. Lightwave Technol. 21, 1059-1065 (2003).
[CrossRef]

S. Doucet, R. Slavik, and S. LaRochelle, "High-finesse large band Fabry-Perot fibre filter with superimposed chirped Bragg gratings," Electron. Lett. 38, 402-403 (2002).
[CrossRef]

Tang, M.

Tetu, M.

Yamashita, S.

S. Yamashita and T. Baba, "Spacing-tunable multiwavelength fibre laser," Electron. Lett. 37, 1015-1017 (2001).
[CrossRef]

S. Yamashita, and K. Hotate, "Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen," Electron. Lett. 32, 1298-1299 (1996).
[CrossRef]

Yang, X.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Zhang, S.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Zhao, C.-L.

Zhou, X.

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

Electron. Lett. (3)

S. Yamashita and T. Baba, "Spacing-tunable multiwavelength fibre laser," Electron. Lett. 37, 1015-1017 (2001).
[CrossRef]

S. Yamashita, and K. Hotate, "Multiwavelength erbium-doped fibre laser using intracavity etalon and cooled by liquid nitrogen," Electron. Lett. 32, 1298-1299 (1996).
[CrossRef]

S. Doucet, R. Slavik, and S. LaRochelle, "High-finesse large band Fabry-Perot fibre filter with superimposed chirped Bragg gratings," Electron. Lett. 38, 402-403 (2002).
[CrossRef]

IEEE Photon. Technol. Lett. (4)

Y.-G. Han, C.-S. Kim, J. U. Kang, U.-C. Paek, and Y. Chung, "Multiwavelength Raman fiber-ring laser based on tunable cascaded long-period fiber gratings," IEEE Photon. Technol. Lett. 15, 383-385 (2003).
[CrossRef]

L. R. Chen, "Tunable multiwavelength fiber ring lasers using a programmable high-birefringence fiber loop mirror," IEEE Photon. Technol. Lett. 16, 410-412 (2004).
[CrossRef]

Y. G. Han, G. Kim, J. H. Lee, S. H. Kim, and S. B. Lee, "Lasing wavelength and spacing tunable multiwavelength fiber laser from 1510 to 1620nm," IEEE Photon. Technol. Lett. 17, 989-991 (2005).
[CrossRef]

X. Yang, X. Dong, S. Zhang, F. Lu, X. Zhou, and C. Lu, "Multiwavelength erbium-doped fiber laser with 0.8nm spacing using sampled Bragg grating and photonic crystal fiber" IEEE Photon. Technol. Lett. 17, 2538-2540 (2005).
[CrossRef]

J. Lightwave Technol. (2)

Opt. Express (2)

Opt. Lett. (1)

Other (1)

C. S. Kim, R. M. Sova, J. U. Kang, and J. B. Khurgin, "Novel multiwavelength cascaded-Raman source based on tunable fiber Sagnac loop filter," in Tech. Dig. OFC 2002, paper WJ1 (2002).

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Figures (5)

Fig. 1.
Fig. 1.

Proposed laser configuration. CFBG, chirped-fiber Bragg grating; OC, optical circulator; PC, polarization controller; WDM, wavelength division multiplexer.

Fig. 2.
Fig. 2.

Schematic diagram of the FSR tuning principle of the superimposed-CFBG comb filter.

Fig. 3.
Fig. 3.

Transmission spectra of the superimposed-CFBG comb filter (a) with reducing chirp rate, (b) without chirp-tuning and (c) with increasing chirp rate.

Fig. 4.
Fig. 4.

Laser output spectra with various channel spacing of (a) 0.3, (b) 0.4, (c) 0.5 and (d) 0.6 nm, without tuning of the CFBG reflector. The inset shows the laser spacing against beam deflection. A linear tuning rate of 0.054 nm/cm was achieved.

Fig. 5.
Fig. 5.

Laser output spectra with different channel numbers of (a) 2, (b) 4 and (c) 10. The channel spacing is 0.5 nm.

Equations (4)

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Δ λ = L tgθ = d tgθ 0 ,
tgθ = B w L g = R c ,
tgθ 0 = B w 0 L g = R c 0 ,
FSR = λ 2 2 nL = FSR 0 ( 1 + Δ R c R c 0 )

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