Abstract

We demonstrate a continuously tunable Er3+-doped fiber laser by incorporating a short-pass filter, which provides a wideband tunable fundamental-mode cutoff with high rejection efficiency (> 45 dB/cm) at long wavelengths, into a ring resonator. The tunable short-pass filter locally suppresses the gain profile of the Er3+-doped fiber at long wavelengths and makes the lasing wavelength continuously move toward short wavelengths when optical polymer is cooling down. The tuning efficiency, tuning range, signal-ASE-ratio, and FWHM linewidth of the laser are 7.65 nm/ºC, 26 nm (1569.8 ~ 1595.8 nm), 40 dB, and 0.5 nm, respectively.

© 2005 Optical Society of America

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    [CrossRef]
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    [CrossRef]
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Appl. Phys. Lett.

A. Gloag, N. Langford, K. McCallion, and W. Johnstone, �??Tunable, single frequency erbium fiber laser using an overlay bandpass filter,�?? Appl. Phys. Lett. 66, 3263-3265 (1995).
[CrossRef]

IEEE J. Quantum Electron.

M. Monerie, �??Propagation in doubly clad single-mode fibers,�?? IEEE J. Quantum Electron. QE-18, 535-542 (1982).
[CrossRef]

IEEE J. Sel. Top. Quantum Electron.

S. Yamashita and M. Nishihara, �??Widely tunable erbium-doped fiber ring laser covering both C-band and L-band,�?? IEEE J. Sel. Top. Quantum Electron. 7, 41-43 (2001).

IEEE Photonics Technol. Lett.

K. R. Sohn and J. W. Song, �??Thermooptically tunable side-polished fiber comb filter and its application,�?? IEEE Photonics Technol. Lett. 14, 1575-1577 (2002).
[CrossRef]

K. R. Sohn and K. Taek, �??Multiwavelength all-fiber ring laser using side-polished fiber comb filter and mechanically formed long-period fiber gratings,�?? IEEE Photonics Technol. Lett. 17, 309-311 (2005).
[CrossRef]

Y. W. Song, S. A. Havstad, D. Starodubov, Y. Xie A. E. Willner, J. Feinberg, �??40-nm-wide tunable fiber ring laser with single-mode operation using a highly stretchable FBG,�?? IEEE Photonics Technol. Lett. 13, 1167-1169 (2001).
[CrossRef]

J. Lightwave Technol.

K. Morishita, �??Bandpass and band-rejection filters using dispersive fibers,�?? J. Lightwave Technol. 7, 816-819 (1989).
[CrossRef]

OFC???03

M. A. Arbore, Y. Zhou, H. Thiele, J. Bromage, and L. Nelson, �??S-band erbium-doped fiber amplifiers for WDM transmission between 1488 and 1508 nm,�?? in Proceedings of Optical Fiber Communication Conference OFC�??03 (Optical Society of America, Washington, D.C., 2003), paper WK2.

OFC???05

M. A. Arbore, �??Application of fundamental-mode cutoff for novel amplifiers and lasers,�?? in Proceedings of Optical Fiber Communication Conference OFC�??05 (Optical Society of America, Washington, D.C., 2005), paper OFB4

Opt. Commun.

B. O. Guan, H. Y. Tam, H. L. W. Chan, X. Y. Dong, C. L. Loong, M. S. Demokan, �??Temperature-tuned erbium-doped fiber ring laser with polymer-coated fiber grating,�?? Opt. Commun. 202, 331-334 (2002).
[CrossRef]

Opt. Lett.

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