Abstract

A new L-band automatic-gain-controlled (AGC) erbium-doped fiber amplifier (EDFA) for dense wavelength-division-multiplexing transmission systems is presented, in which a single 1480nm laser with an internal thermoelectric cooler is used as a primary pump for stable amplification. All C-band amplified spontaneous emission (ASE) is recycled by the secondary pump to enhance the gain efficiency. A fraction of the output signal is used as an electrical feedback monitor for the AGC to improve the gain-clamped (GC) flatness. Experimental results prove that the AGC EDFA has a gain flatness of better than 0.46dB/40nm, i.e., below 1.5%, and a higher gain of approximately 36.5dB compared to that of approximately 35.3dB for the conventional GC EDFA at 30dBm input signal power. The best gain flatness of ±0.25dB can be achieved over the dynamic range greater than 20dB. The dynamic range of noise figure is between 6.7 and 7.1. The 3dB down bandwidth is more than 40nm. Overall dynamics measurements for the AGC EDFA feedback stabilization have been carried out. The recorded corresponding rise time of 1.565ms indicates that the system does not exhibit any overshoot of gain or ASE variation due to the signal at the beginning of the pulse.

© 2009 Optical Society of America

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  1. A. K. Srivastava, “EDFA transient response to channel loss in WDM transmission system,” IEEE Photonics Technol. Lett. 9, 386-388 (1997).
    [CrossRef]
  2. Y. Tanaka and K. Hotate, “Analysis of fiber Brillouin ring laser composed of single-polarization single-mode fiber,” J. Lightwave Technol. 15, 838-844 (1997).
    [CrossRef]
  3. S. Yamashita and K. Hotate, “Polarization-independent depolarizers for highly coherent light using Faraday rotator mirrors,” J. Lightwave Technol. 15, 900-905 (1997).
    [CrossRef]
  4. S. Yamashita and K. Hotate, “Multiwavelength erbium-doped fiber laser using intracavity etalon and cooled by liquid nitrogen,” Electron. Lett. 32, 1298-1299 (1996).
    [CrossRef]
  5. X. Fan, Z. He, Y. Mizuno, and K. Hotate, “Bandwidth-adjustable dynamic grating in erbium-doped fiber by synthesis of optical coherence function,” Opt. Express 13, 5756-5761(2005).
    [CrossRef] [PubMed]
  6. T.-C. Liang and S. Hsu, “The L-band EDFA of high clamped gain and low noise figure implemented using fiber Bragg grating and double-pass method,” Opt. Commun. 281, 1134-1139(2008).
    [CrossRef]
  7. C.-F. Su and L. Wang, “Gain enhancement of L-band EDFA by using residual pump power in a three-stage configuration,” Opt. Commun. 280, 412-416 (2007).
    [CrossRef]
  8. S. W. Harun and H. Ahmad, “Gain-clamped in two-stage L-band EDFA using an unwanted backward ASE from second stage,” Opt. Commun. 35, 441-444 (2003).
  9. J. T. Ahn, and K. H. Kim, “Long wavelength band erbium-doped fiber amplifier with a reflective type first stage amplifier,” Opt. Commun. 212, 275-278 (2002).
    [CrossRef]
  10. H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
    [CrossRef]
  11. H. Chen, M. Lablenc, and G. W. Schinn, “Gain enhanced L-band optical fiber amplifiers and tunable fiber lasers with erbium-doped fibers,” Opt. Commun. 216, 119-125(2003).
    [CrossRef]
  12. J.-C. Dung, S. C., and C.-C. Chen, “Characteristics of the erbium-doped fiber amplifier with polarization dispersion compensation,” Opt. Commun. 222, 207-212 (2003).
    [CrossRef]
  13. Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
    [CrossRef]
  14. C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
    [CrossRef]
  15. H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
    [CrossRef]
  16. Y.-H. Lu and S. Chi, “All-optical gain-clamped wideband EDFA serial EDFA with ring-shaped laser,” Opt. Commun. 229, 317-323 (2004).
    [CrossRef]
  17. I.-B. Sohn and J.-W. Song, “Gain flattened and improved double-pass two-stage EDFA using microbending long-period fiber gratings,” Opt. Commun. 236, 141-144 (2004).
    [CrossRef]
  18. J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).
  19. K. Takiguchi and K. Hotate, “Removal of lock-in phenomenon in optical passive ring-resonator gyro using optical Kerr-effect in fiber resonator,” IEEE Photonics Technol. Lett. 4, 810-812 (1992).
    [CrossRef]
  20. K. Takiguchi and K. Hotate, “Bias of an optical passive ring-resonator gyro caused by the misalignment of the polarization-axis in the polarization maintaining fiber resonator,” J. Lightwave Technol. 10, 514-522 (1992).
    [CrossRef]
  21. A. R. Pratt, K. Fujiii, and Y. Ozeki, “Gain control in L-band EDFAs by monitoring backward traveling C-band ASE,” IEEE Photonics Technol. Lett. 12 (2000).
    [CrossRef]

2008 (1)

T.-C. Liang and S. Hsu, “The L-band EDFA of high clamped gain and low noise figure implemented using fiber Bragg grating and double-pass method,” Opt. Commun. 281, 1134-1139(2008).
[CrossRef]

2007 (1)

C.-F. Su and L. Wang, “Gain enhancement of L-band EDFA by using residual pump power in a three-stage configuration,” Opt. Commun. 280, 412-416 (2007).
[CrossRef]

2005 (1)

2004 (2)

Y.-H. Lu and S. Chi, “All-optical gain-clamped wideband EDFA serial EDFA with ring-shaped laser,” Opt. Commun. 229, 317-323 (2004).
[CrossRef]

I.-B. Sohn and J.-W. Song, “Gain flattened and improved double-pass two-stage EDFA using microbending long-period fiber gratings,” Opt. Commun. 236, 141-144 (2004).
[CrossRef]

2003 (6)

H. Chen, M. Lablenc, and G. W. Schinn, “Gain enhanced L-band optical fiber amplifiers and tunable fiber lasers with erbium-doped fibers,” Opt. Commun. 216, 119-125(2003).
[CrossRef]

J.-C. Dung, S. C., and C.-C. Chen, “Characteristics of the erbium-doped fiber amplifier with polarization dispersion compensation,” Opt. Commun. 222, 207-212 (2003).
[CrossRef]

Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
[CrossRef]

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

S. W. Harun and H. Ahmad, “Gain-clamped in two-stage L-band EDFA using an unwanted backward ASE from second stage,” Opt. Commun. 35, 441-444 (2003).

2002 (2)

J. T. Ahn, and K. H. Kim, “Long wavelength band erbium-doped fiber amplifier with a reflective type first stage amplifier,” Opt. Commun. 212, 275-278 (2002).
[CrossRef]

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

2000 (1)

A. R. Pratt, K. Fujiii, and Y. Ozeki, “Gain control in L-band EDFAs by monitoring backward traveling C-band ASE,” IEEE Photonics Technol. Lett. 12 (2000).
[CrossRef]

1997 (3)

A. K. Srivastava, “EDFA transient response to channel loss in WDM transmission system,” IEEE Photonics Technol. Lett. 9, 386-388 (1997).
[CrossRef]

Y. Tanaka and K. Hotate, “Analysis of fiber Brillouin ring laser composed of single-polarization single-mode fiber,” J. Lightwave Technol. 15, 838-844 (1997).
[CrossRef]

S. Yamashita and K. Hotate, “Polarization-independent depolarizers for highly coherent light using Faraday rotator mirrors,” J. Lightwave Technol. 15, 900-905 (1997).
[CrossRef]

1996 (1)

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

1994 (1)

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

1992 (2)

K. Takiguchi and K. Hotate, “Removal of lock-in phenomenon in optical passive ring-resonator gyro using optical Kerr-effect in fiber resonator,” IEEE Photonics Technol. Lett. 4, 810-812 (1992).
[CrossRef]

K. Takiguchi and K. Hotate, “Bias of an optical passive ring-resonator gyro caused by the misalignment of the polarization-axis in the polarization maintaining fiber resonator,” J. Lightwave Technol. 10, 514-522 (1992).
[CrossRef]

Ahmad, H.

S. W. Harun and H. Ahmad, “Gain-clamped in two-stage L-band EDFA using an unwanted backward ASE from second stage,” Opt. Commun. 35, 441-444 (2003).

Ahn, J. T.

J. T. Ahn, and K. H. Kim, “Long wavelength band erbium-doped fiber amplifier with a reflective type first stage amplifier,” Opt. Commun. 212, 275-278 (2002).
[CrossRef]

Ahn, S. J.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Armitage, J. R.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

C., S.

J.-C. Dung, S. C., and C.-C. Chen, “Characteristics of the erbium-doped fiber amplifier with polarization dispersion compensation,” Opt. Commun. 222, 207-212 (2003).
[CrossRef]

Chen, C.-C.

J.-C. Dung, S. C., and C.-C. Chen, “Characteristics of the erbium-doped fiber amplifier with polarization dispersion compensation,” Opt. Commun. 222, 207-212 (2003).
[CrossRef]

Chen, H.

H. Chen, M. Lablenc, and G. W. Schinn, “Gain enhanced L-band optical fiber amplifiers and tunable fiber lasers with erbium-doped fibers,” Opt. Commun. 216, 119-125(2003).
[CrossRef]

Chi, S.

Y.-H. Lu and S. Chi, “All-optical gain-clamped wideband EDFA serial EDFA with ring-shaped laser,” Opt. Commun. 229, 317-323 (2004).
[CrossRef]

Choi, H. B.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Chung, W.-H.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

Dong, X.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Dung, J.-C.

J.-C. Dung, S. C., and C.-C. Chen, “Characteristics of the erbium-doped fiber amplifier with polarization dispersion compensation,” Opt. Commun. 222, 207-212 (2003).
[CrossRef]

Fan, X.

Fujiii, K.

A. R. Pratt, K. Fujiii, and Y. Ozeki, “Gain control in L-band EDFAs by monitoring backward traveling C-band ASE,” IEEE Photonics Technol. Lett. 12 (2000).
[CrossRef]

Gao, W.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Guan, B.-O.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

Harun, S. W.

S. W. Harun and H. Ahmad, “Gain-clamped in two-stage L-band EDFA using an unwanted backward ASE from second stage,” Opt. Commun. 35, 441-444 (2003).

He, S.

Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
[CrossRef]

He, Z.

Hotate, K.

X. Fan, Z. He, Y. Mizuno, and K. Hotate, “Bandwidth-adjustable dynamic grating in erbium-doped fiber by synthesis of optical coherence function,” Opt. Express 13, 5756-5761(2005).
[CrossRef] [PubMed]

S. Yamashita and K. Hotate, “Polarization-independent depolarizers for highly coherent light using Faraday rotator mirrors,” J. Lightwave Technol. 15, 900-905 (1997).
[CrossRef]

Y. Tanaka and K. Hotate, “Analysis of fiber Brillouin ring laser composed of single-polarization single-mode fiber,” J. Lightwave Technol. 15, 838-844 (1997).
[CrossRef]

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

K. Takiguchi and K. Hotate, “Bias of an optical passive ring-resonator gyro caused by the misalignment of the polarization-axis in the polarization maintaining fiber resonator,” J. Lightwave Technol. 10, 514-522 (1992).
[CrossRef]

K. Takiguchi and K. Hotate, “Removal of lock-in phenomenon in optical passive ring-resonator gyro using optical Kerr-effect in fiber resonator,” IEEE Photonics Technol. Lett. 4, 810-812 (1992).
[CrossRef]

Hsu, S.

T.-C. Liang and S. Hsu, “The L-band EDFA of high clamped gain and low noise figure implemented using fiber Bragg grating and double-pass method,” Opt. Commun. 281, 1134-1139(2008).
[CrossRef]

Kashyap, R.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Kim, K. H.

J. T. Ahn, and K. H. Kim, “Long wavelength band erbium-doped fiber amplifier with a reflective type first stage amplifier,” Opt. Commun. 212, 275-278 (2002).
[CrossRef]

Lablenc, M.

H. Chen, M. Lablenc, and G. W. Schinn, “Gain enhanced L-band optical fiber amplifiers and tunable fiber lasers with erbium-doped fibers,” Opt. Commun. 216, 119-125(2003).
[CrossRef]

Lee, D.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Lee, S. B.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Liang, T.-C.

T.-C. Liang and S. Hsu, “The L-band EDFA of high clamped gain and low noise figure implemented using fiber Bragg grating and double-pass method,” Opt. Commun. 281, 1134-1139(2008).
[CrossRef]

Liu, S.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Liu, Y.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Lobbett, R. A.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Lu, Y.-H.

Y.-H. Lu and S. Chi, “All-optical gain-clamped wideband EDFA serial EDFA with ring-shaped laser,” Opt. Commun. 229, 317-323 (2004).
[CrossRef]

Lu, Z.

Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
[CrossRef]

Massicott, J. F.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Meng, H.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Mizuno, Y.

Oh, J. M.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Ozeki, Y.

A. R. Pratt, K. Fujiii, and Y. Ozeki, “Gain control in L-band EDFAs by monitoring backward traveling C-band ASE,” IEEE Photonics Technol. Lett. 12 (2000).
[CrossRef]

Park, B. S.

H. B. Choi, J. M. Oh, D. Lee, S. J. Ahn, B. S. Park, and S. B. Lee, “Simple and efficient L-band erbium-doped fiber amplifiers for WDM networks,” Opt. Commun. 213, 63-66 (2002).
[CrossRef]

Pratt, A. R.

A. R. Pratt, K. Fujiii, and Y. Ozeki, “Gain control in L-band EDFAs by monitoring backward traveling C-band ASE,” IEEE Photonics Technol. Lett. 12 (2000).
[CrossRef]

Qiang, Z.

Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
[CrossRef]

Schinn, G. W.

H. Chen, M. Lablenc, and G. W. Schinn, “Gain enhanced L-band optical fiber amplifiers and tunable fiber lasers with erbium-doped fibers,” Opt. Commun. 216, 119-125(2003).
[CrossRef]

Sohn, I.-B.

I.-B. Sohn and J.-W. Song, “Gain flattened and improved double-pass two-stage EDFA using microbending long-period fiber gratings,” Opt. Commun. 236, 141-144 (2004).
[CrossRef]

Song, J.-W.

I.-B. Sohn and J.-W. Song, “Gain flattened and improved double-pass two-stage EDFA using microbending long-period fiber gratings,” Opt. Commun. 236, 141-144 (2004).
[CrossRef]

Srivastava, A. K.

A. K. Srivastava, “EDFA transient response to channel loss in WDM transmission system,” IEEE Photonics Technol. Lett. 9, 386-388 (1997).
[CrossRef]

Su, C.-F.

C.-F. Su and L. Wang, “Gain enhancement of L-band EDFA by using residual pump power in a three-stage configuration,” Opt. Commun. 280, 412-416 (2007).
[CrossRef]

Takiguchi, K.

K. Takiguchi and K. Hotate, “Removal of lock-in phenomenon in optical passive ring-resonator gyro using optical Kerr-effect in fiber resonator,” IEEE Photonics Technol. Lett. 4, 810-812 (1992).
[CrossRef]

K. Takiguchi and K. Hotate, “Bias of an optical passive ring-resonator gyro caused by the misalignment of the polarization-axis in the polarization maintaining fiber resonator,” J. Lightwave Technol. 10, 514-522 (1992).
[CrossRef]

Tam, H.-Y.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

Tanaka, Y.

Y. Tanaka and K. Hotate, “Analysis of fiber Brillouin ring laser composed of single-polarization single-mode fiber,” J. Lightwave Technol. 15, 838-844 (1997).
[CrossRef]

Wai, P. K. A.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

Wang, L.

C.-F. Su and L. Wang, “Gain enhancement of L-band EDFA by using residual pump power in a three-stage configuration,” Opt. Commun. 280, 412-416 (2007).
[CrossRef]

Williams, D.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Willson, S. D.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Wu, X.

Z. Qiang, X. Wu, S. He, and Z. Lu, “The global analysis for an all-optical gain-clamped L-band erbium-doped fiber amplifier using an single fiber Bragg grating,” Opt. Commun. 224, 73-80 (2003).
[CrossRef]

Wyatt, R.

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

Yamashita, S.

S. Yamashita and K. Hotate, “Polarization-independent depolarizers for highly coherent light using Faraday rotator mirrors,” J. Lightwave Technol. 15, 900-905 (1997).
[CrossRef]

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

Yuan, S.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Zhang, H.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Zhao, C.

H. Meng, W. Gao, Y. Liu, H. Zhang, C. Zhao, S. Yuan, X. Dong, and S. Liu, “The gain and noise figure improvement of reflection L-band erbium-doped fiber amplifier,” Opt. Commun. 228, 85-89 (2003).
[CrossRef]

Zhao, C.-L.

C.-L. Zhao, B.-O. Guan, H.-Y. Tam, W.-H. Chung, X. Dong, P. K. A. Wai, and X. Dong, “Performance of optical automatic gain control EDFA with dual-oscilating control lasers,” Opt. Commun. 224, 281-287 (2003).
[CrossRef]

Electron. Lett. (1)

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

IEEE Photonics Technol. Lett. (4)

A. K. Srivastava, “EDFA transient response to channel loss in WDM transmission system,” IEEE Photonics Technol. Lett. 9, 386-388 (1997).
[CrossRef]

J. F. Massicott, S. D. Willson, R. Wyatt, J. R. Armitage, R. Kashyap, D. Williams, and R. A. Lobbett, “1480 nm pumped erbium doped fiber amplifier with all optical automatic gain control,” IEEE Photonics Technol. Lett. 30, 962-964 (1994).

K. Takiguchi and K. Hotate, “Removal of lock-in phenomenon in optical passive ring-resonator gyro using optical Kerr-effect in fiber resonator,” IEEE Photonics Technol. Lett. 4, 810-812 (1992).
[CrossRef]

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Opt. Express (1)

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Figures (7)

Fig. 1
Fig. 1

Configuration of the AGC L-band EDFA utilizing an electrical feedback monitor and backward ASE. WDM TX, wavelength division multiplexer transmitter; MUX, multiplexer; OI1–OI4, optical isolators; CIR1 and CIR2, circulators; VOA1 and VOA2, variable optical attenuators.

Fig. 2
Fig. 2

Forward C-band ASE spectrum measured at Port 1 of CIR1 at a 40 dBm input power and a 1569.1 nm wavelength.

Fig. 3
Fig. 3

Gain and NF as functions of the input signal wavelength at 30 dBm for different feedback attenuations, VOA 1 = 0 , 10 dB , and unplugged.

Fig. 4
Fig. 4

Gain and NF as functions of the input signal power at 1585 nm for different feedback attenuations, VOA 1 = 0 , 2, and 4 dB .

Fig. 5
Fig. 5

Gain and NF as functions of the input signal power at 1585 nm for different feedback attenuations, VOA 2 = 0 , 2, and 4 dB .

Fig. 6
Fig. 6

Measured tunable L-band AGC EDFA spectra by OSA at output port of OI4 with 30 dBm input power each.

Fig. 7
Fig. 7

Dynamic response of the AGC EDFA. Ch1, modulating signal of rectangular pulses; Ch2, corresponding photocurrent; Ch3: AGC DC bias.

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