Abstract

We demonstrate a simple and reliable scheme for wavelength switching in an actively harmonic mode-locked Fabry–Perot laser diode (FPLD) that is coupled to a highly dispersive external fiber cavity. Wavelength switching between FPLD modes is achieved by detuning of the modulation frequency applied to the FPLD. A side-mode suppression ratio of as much as 40  dB is maintained, and the supermode noise suppression ratio is more than 50  dB for the whole wavelength switching operation range of 4.7  nm when the pulse repetition rate is 2  GHz. The wavelength- switching mechanism of our laser is based on the wavelength-dependent cavity resonance frequency shift that is due to chromatic dispersion, and we verify that our experimental results closely coincide with analytical results.

© 2006 Optical Society of America

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  1. M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
    [CrossRef]
  2. Y. C. Lee and C. Shu, "Wavelength-tunable nearly transform-limited pulses generated by self-injection seeding of a laser diode at an arbitrary repetition rate," IEEE Photon. Technol. Lett. 9, 590-592 (1997).
    [CrossRef]
  3. S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
    [CrossRef]
  4. M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
    [CrossRef]
  5. K. K. Chow and C. Shu, "Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity," IEEE Photon. Technol. Lett. 13, 373-375 (2001).
    [CrossRef]
  6. D. J. Kuizenga and A. E. Siegman, "FM and AM mode locking of the homogeneous laser. I. Theory," IEEE J. Quantum Electron. QE-6, 694-708 (1970).
    [CrossRef]
  7. D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
    [CrossRef]
  8. J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
    [CrossRef]
  9. P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
    [CrossRef]
  10. S. Li and K. T. Chan, "Actively mode-locked erbium fiber ring laser using Fabry-Perot semiconductor modulator as mode locker and tunable filter," Appl. Phys. Lett. 74, 2737-2739 (1999).
    [CrossRef]
  11. D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
    [CrossRef]
  12. K. Tamura and M. Nakazawa, "Dispersion-tuned harmonically mode-locked fiber ring laser for self-synchronization to an external clock," Opt. Lett. 21, 1984-1986 (1996).
    [CrossRef] [PubMed]
  13. L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
    [CrossRef]
  14. K. Tamura and M. Nakazawa, "Pulse energy equalization in harmonically FM mode-locked lasers with slow gain," Opt. Lett. 21, 1930-1932 (1996).
    [CrossRef] [PubMed]
  15. Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
    [CrossRef]
  16. C. Wu and N. K. Dutta, "High-repetition-rate optical pulse generation using a rational harmonic mode-locked fiber laser," IEEE J. Quantum Electron. 36, 145-150 (2000).
    [CrossRef]
  17. G. P. Agrawal and N. K. Dutta, Semiconductor Lasers, 2nd ed. (Van Nostrand Reinhold, 1993).
  18. M. Nakazawa, K. Tamura, and E. Yoshida, "Supermode noise suppression in a harmonically modelocked fiber laser by selfphase modulation and spectral filtering," Electron. Lett. 32, 461-463 (1996).
    [CrossRef]

2005 (1)

Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
[CrossRef]

2003 (1)

L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
[CrossRef]

2001 (2)

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

K. K. Chow and C. Shu, "Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity," IEEE Photon. Technol. Lett. 13, 373-375 (2001).
[CrossRef]

2000 (1)

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

1999 (1)

S. Li and K. T. Chan, "Actively mode-locked erbium fiber ring laser using Fabry-Perot semiconductor modulator as mode locker and tunable filter," Appl. Phys. Lett. 74, 2737-2739 (1999).
[CrossRef]

1998 (1)

S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
[CrossRef]

1997 (1)

Y. C. Lee and C. Shu, "Wavelength-tunable nearly transform-limited pulses generated by self-injection seeding of a laser diode at an arbitrary repetition rate," IEEE Photon. Technol. Lett. 9, 590-592 (1997).
[CrossRef]

1996 (4)

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

M. Nakazawa, K. Tamura, and E. Yoshida, "Supermode noise suppression in a harmonically modelocked fiber laser by selfphase modulation and spectral filtering," Electron. Lett. 32, 461-463 (1996).
[CrossRef]

K. Tamura and M. Nakazawa, "Pulse energy equalization in harmonically FM mode-locked lasers with slow gain," Opt. Lett. 21, 1930-1932 (1996).
[CrossRef] [PubMed]

K. Tamura and M. Nakazawa, "Dispersion-tuned harmonically mode-locked fiber ring laser for self-synchronization to an external clock," Opt. Lett. 21, 1984-1986 (1996).
[CrossRef] [PubMed]

1994 (1)

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

1993 (1)

M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
[CrossRef]

1990 (1)

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

1986 (1)

D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
[CrossRef]

1970 (1)

D. J. Kuizenga and A. E. Siegman, "FM and AM mode locking of the homogeneous laser. I. Theory," IEEE J. Quantum Electron. QE-6, 694-708 (1970).
[CrossRef]

Agrawal, G. P.

G. P. Agrawal and N. K. Dutta, Semiconductor Lasers, 2nd ed. (Van Nostrand Reinhold, 1993).

Babushikin, A. V.

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

Bennion, I.

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

Bimberg, D.

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
[CrossRef]

Bouchoule, S.

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

Brun, E.

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

Burdge, G. L.

D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
[CrossRef]

Chan, K. T.

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

S. Li and K. T. Chan, "Actively mode-locked erbium fiber ring laser using Fabry-Perot semiconductor modulator as mode locker and tunable filter," Appl. Phys. Lett. 74, 2737-2739 (1999).
[CrossRef]

S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
[CrossRef]

Chow, K. K.

K. K. Chow and C. Shu, "Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity," IEEE Photon. Technol. Lett. 13, 373-375 (2001).
[CrossRef]

Dagenais, M.

L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
[CrossRef]

Duan, L.

L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
[CrossRef]

Dutta, N. K.

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

G. P. Agrawal and N. K. Dutta, Semiconductor Lasers, 2nd ed. (Van Nostrand Reinhold, 1993).

Goldhar, J.

L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
[CrossRef]

Ho, P.-T.

D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
[CrossRef]

Huhse, D.

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
[CrossRef]

Kassner, J.

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

Kim, D. Y.

Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
[CrossRef]

Kim, Y. J.

Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
[CrossRef]

Kuizenga, D. J.

D. J. Kuizenga and A. E. Siegman, "FM and AM mode locking of the homogeneous laser. I. Theory," IEEE J. Quantum Electron. QE-6, 694-708 (1970).
[CrossRef]

Lee, Y. C.

Y. C. Lee and C. Shu, "Wavelength-tunable nearly transform-limited pulses generated by self-injection seeding of a laser diode at an arbitrary repetition rate," IEEE Photon. Technol. Lett. 9, 590-592 (1997).
[CrossRef]

Lesterlin, D.

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

Li, S.

S. Li and K. T. Chan, "Actively mode-locked erbium fiber ring laser using Fabry-Perot semiconductor modulator as mode locker and tunable filter," Appl. Phys. Lett. 74, 2737-2739 (1999).
[CrossRef]

S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
[CrossRef]

Liu, Y.

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

Lou, C.

S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
[CrossRef]

Lourtioz, J.-M.

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

Nakazawa, M.

Rush, D. W.

D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
[CrossRef]

Schell, M.

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
[CrossRef]

Shu, C.

K. K. Chow and C. Shu, "Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity," IEEE Photon. Technol. Lett. 13, 373-375 (2001).
[CrossRef]

Y. C. Lee and C. Shu, "Wavelength-tunable nearly transform-limited pulses generated by self-injection seeding of a laser diode at an arbitrary repetition rate," IEEE Photon. Technol. Lett. 9, 590-592 (1997).
[CrossRef]

Siegman, A. E.

D. J. Kuizenga and A. E. Siegman, "FM and AM mode locking of the homogeneous laser. I. Theory," IEEE J. Quantum Electron. QE-6, 694-708 (1970).
[CrossRef]

Song, H.

Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
[CrossRef]

Tamura, K.

Taylor, J. R.

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

Utz, W.

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

Vukusic, J. I.

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

Wigley, P. G. J.

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

Wu, C.

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

Xie, J. M.

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

Yoshida, E.

M. Nakazawa, K. Tamura, and E. Yoshida, "Supermode noise suppression in a harmonically modelocked fiber laser by selfphase modulation and spectral filtering," Electron. Lett. 32, 461-463 (1996).
[CrossRef]

Zhao, D.

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

Appl. Phys. Lett. (2)

M. Schell, W. Utz, D. Huhse, J. Kassner, and D. Bimberg, "Low jitter single-mode pulse generation by a self-seeded, gain-switched Fabry-Perot semiconductor laser," Appl. Phys. Lett. 65, 3045-3047 (1994).
[CrossRef]

S. Li and K. T. Chan, "Actively mode-locked erbium fiber ring laser using Fabry-Perot semiconductor modulator as mode locker and tunable filter," Appl. Phys. Lett. 74, 2737-2739 (1999).
[CrossRef]

Electron. Lett. (3)

Y. J. Kim, H. Song, and D. Y. Kim, "Pulse stabilization in a harmonically FM mode-locked erbium fiber ring laser with a DFBLD," Electron. Lett. 41, 837-838 (2005).
[CrossRef]

M. Nakazawa, K. Tamura, and E. Yoshida, "Supermode noise suppression in a harmonically modelocked fiber laser by selfphase modulation and spectral filtering," Electron. Lett. 32, 461-463 (1996).
[CrossRef]

S. Li, K. T. Chan, and C. Lou, "Wavelength-tunable picosecond pulses generated from stable self-seeded gain-switched laser diode with linearly chirped fibre Bragg grating," Electron. Lett. 34, 1234-1236 (1998).
[CrossRef]

IEEE J. Lightwave Technol. (2)

L. Duan, M. Dagenais, and J. Goldhar, "Smoothly wavelength-tunable picosecond pulse generation using a harmonically mode-locked fiber ring laser," IEEE J. Lightwave Technol. 21, 930-937 (2003).
[CrossRef]

J. M. Xie, S. Bouchoule, J.-M. Lourtioz, E. Brun, and D. Lesterlin, "Chirp compensation in mode-locked DFB laser diode with external cavity," IEEE J. Lightwave Technol. 14, 179-187 (1996).
[CrossRef]

IEEE J. Quantum Electron. (3)

D. J. Kuizenga and A. E. Siegman, "FM and AM mode locking of the homogeneous laser. I. Theory," IEEE J. Quantum Electron. QE-6, 694-708 (1970).
[CrossRef]

D. W. Rush, G. L. Burdge, and P.-T. Ho, "The linewidth of a mode-locked semiconductor laser caused by spontaneous emission: experimental comparison to single-mode operation," IEEE J. Quantum Electron. QE-22, 2088-2091 (1986).
[CrossRef]

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

IEEE Photon. Technol. Lett. (5)

D. Zhao, K. T. Chan, Y. Liu, and I. Bennion, "Wavelength-switched optical pulse generation in a fiber ring laser with a Fabry-Perot semiconductor modulator and a sampled fiber Bragg grating," IEEE Photon. Technol. Lett. 13, 191-193 (2001).
[CrossRef]

P. G. J. Wigley, A. V. Babushikin, J. I. Vukusic, and J. R. Taylor, "Active mode locking of an erbium-doped fiber laser using an intracavity laser diode device," IEEE Photon. Technol. Lett. 2, 543-545 (1990).
[CrossRef]

K. K. Chow and C. Shu, "Fast spectral improvement in picosecond pulses generated from a DFB laser diode using a loosely coupled external cavity," IEEE Photon. Technol. Lett. 13, 373-375 (2001).
[CrossRef]

M. Schell, D. Huhse, and D. Bimberg, "Generation of 2.5-ps light pulses with 15-nm wavelength tenability at 1.3 μm by a self-seeded gain-switched semiconductor laser," IEEE Photon. Technol. Lett. 5, 1267-1269 (1993).
[CrossRef]

Y. C. Lee and C. Shu, "Wavelength-tunable nearly transform-limited pulses generated by self-injection seeding of a laser diode at an arbitrary repetition rate," IEEE Photon. Technol. Lett. 9, 590-592 (1997).
[CrossRef]

Opt. Lett. (2)

Other (1)

G. P. Agrawal and N. K. Dutta, Semiconductor Lasers, 2nd ed. (Van Nostrand Reinhold, 1993).

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Figures (8)

Fig. 1
Fig. 1

Experimental configuration of an actively harmonic mode-locked coupled cavity laser composed of a FPLD and a highly dispersive external fiber ring cavity for wavelength-switching applications. WDM, wavelength-division multiplexer.

Fig. 2
Fig. 2

(a) Optical spectrum and (b) autocorrelation trace of a mode-locked laser pulse when the FPLD is modulated at 1996.089 MHz frequency.

Fig. 3
Fig. 3

(Color online) Stable pulse characteristics of laser output pulses. (a) Optical pulse trace measured with a fast detector and a sampling scope in color-graded mode for SMN measurement. (b) rf beating spectrum with SMN suppression over 50 dB.

Fig. 4
Fig. 4

Relation between wavelength-switched pulse characteristics and modulation frequency in a coupled-laser system with an external cavity made from a highly anomalous-dispersion fiber. (a) Discrete wavelength-switched peaks shifting toward the shorter-wavelength side when the modulation frequency onto the FPLD increased from 1996.089 MHz. (b) Spectral width, TBP, and peak wavelength are measured at each detuned modulation frequency.

Fig. 5
Fig. 5

SMSR and SMN suppression ratio over modulation-frequency variation in a coupled-laser system with an external cavity made from a highly anomalous-dispersion fiber.

Fig. 6
Fig. 6

(Color online) Evolution in optical spectrum and temporal pulse stability during wavelength switching. (a) Optical spectra and (b) temporal pulse waveforms when the detuning frequencies in the applied signal were top, 7.1 kHz; middle, 10.6 kHz; and bottom 14.2 kHz.

Fig. 7
Fig. 7

Spectral width, TBP, and peak wavelength (filled squares, filled triangles, and open circles, respectively) measured at each detuned modulation frequency in a coupled-laser system with an external cavity made from a highly normal-dispersion fiber.

Fig. 8
Fig. 8

SMSR and SMN suppression ratio over modulation-frequency variation in a coupled-laser system with an external cavity made from a highly normal-dispersion fiber.

Equations (3)

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T rt ( λ ) = L V g ( λ ) = m f m ,
d T rt ( λ ) d λ = L D .
d λ d f m = m f m         2 D L .

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