Abstract

A theoretical and experimental study of a multiwavelength fiber-ring laser that incorporates a semiconductor optical amplifier (SOA) in the laser cavity as a phase modulator to suppress the homogeneous line broadening is presented. The analysis reveals that the phase shift introduced by the SOA-based phase modulator is more significant than that formed using a LiNbO3 phase modulator, which leads to a better suppression of the homogeneous line broadening. Multiwavelength lasing with small wavelength spacing and improved stability at room temperature is achieved. A fiber-ring laser based on the proposed approach is implemented. Stable multiwavelength operation with up to 26 wavelengths and wavelength spacing as small as 0.19 nm at room temperature is demonstrated.

© 2005 IEEE

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  11. R. Slavk and S. LaRochelle, "Frequency shift in a fiber laser resonator", Opt. Lett., vol. 27, no. 1, pp. 28-30, Jan. 2002.
  12. L. Gillner, "Modulation properties of a near traveling-wave semiconductor laser amplifier", Proc. Inst. Elect. Eng. Optoelectron., vol. 139, no. 5, pp. 331-338, Oct. 1992.
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  15. C. Kim, Y. Han, R. M. Sova, U. Paek, Y. Chung and J. U. Kang, "Optical fiber modal birefringence measurement based on Lyot-Sagnac interferometer", IEEE Photon. Technol. Lett., vol. 15, no. 2, pp. 269-271, Feb. 2003.

Other

S. Yamashita and K. Hotate, "Multiwavelength erbium-doped fiber laser using intracavity etalon and cooled by liquid nitrogen", Electron. Lett., vol. 32, no. 14, pp. 1298-1299, 1996.

N. Park and P. F. Wysocki, "24-line multiwavelength operation of erbium-doped fiber-ring laser", IEEE Photon. Technol. Lett., vol. 8, no. 11, pp. 1459-1461, Nov. 1996.

J. Yao, J. P. Yao, Y. Wang, S. C. Tjin, Y. Zhou, Y. L. Lam, J. Liu and C. Lu, "Active mode locking of multi-wavelength fiber ring laser", Opt. Commun., vol. 191, no. 3-6, pp. 341-345, May 2001.

O. Graydon, W. H. Loh, R. I. Laming and L. Dong, "Triple-frequency operation of an Er-doped twincore fiber loop laser", IEEE Photon. Technol. Lett., vol. 8, no. 1, pp. 63-65, Jan. 1996.

Y. Zhao, C. Shu, S. P. Li, H. Ding and K. T. Chan, "Multiple wavelength operation of a unidirectional Er-doped fiber ring laser with optical feedback", in Tech. Dig. Conf. Laser and Electro-optics (CLEO), Baltimore, MD, 1997, p. 396, CThL65.

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. Lightw. Technol., vol. 18, no. 6, pp. 825-831, Jun. 2000.

K. Zhou, D. Zhou, F. Dong and N. Q. Ngo, "Room-temperature multiwavelength erbium-doped fiber ring laser employing sinusoidal phase-modulation feedback", Opt. Lett., vol. 28, no. 11, pp. 893-895, Jun. 2003.

J. Yao, J. P. Yao and Z. Deng, "Multiwavelength actively mode-locked fiber ring laser with suppressed homogeneous line broadening and reduced supermode noise", Opt. Express, vol. 12, no. 19, pp. 4529-4534, Sep. 2004.

J. Yao, J. P. Yao, Z. Deng and J. Liu, "Multiwavelength erbium-doped fiber ring laser incorporating an SOA-based phase modulator", IEEE Photon. Technol. Lett., vol. 17, no. 4, pp. 756-758, Apr. 2005.

A. E. Siegman, Lasers, Mill Valley, CA: Univ. Sci., 1986.

R. Slavk and S. LaRochelle, "Frequency shift in a fiber laser resonator", Opt. Lett., vol. 27, no. 1, pp. 28-30, Jan. 2002.

L. Gillner, "Modulation properties of a near traveling-wave semiconductor laser amplifier", Proc. Inst. Elect. Eng. Optoelectron., vol. 139, no. 5, pp. 331-338, Oct. 1992.

J. Mellis, "Direct optical phase modulation in semiconductor laser amplifier", Electron. Lett., vol. 25, no. 10, pp. 679-680, May 1989.

"Practical Uses and Applications of Electro-Optic Modulators", New Focus Inc., San Jose, CA,

C. Kim, Y. Han, R. M. Sova, U. Paek, Y. Chung and J. U. Kang, "Optical fiber modal birefringence measurement based on Lyot-Sagnac interferometer", IEEE Photon. Technol. Lett., vol. 15, no. 2, pp. 269-271, Feb. 2003.

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