Abstract

We propose and experimentally demonstrate a tunable multi-wavelength SOA fiber laser based on a Sagnac loop mirror using elliptical core side-hole fiber. We fabricated different types of elliptical core side-hole fiber with elliptical or circular cladding shape. The measured modal birefringence of the fabricated fiber was 1.7×10-4 (elliptical shape) and 1.16×10-4 (circular shape), respectively. By carefully adjusting the polarization controller inside the cavity, we could obtain 18 discrete channels with SNR over 30 dB and channel spacing of 0.8 nm and 10 discrete channels with SNR over 30 dB and channel spacing of ∼1.4 nm. The proposed fiber laser was rather stable and the temporal power fluctuation was less than 0.8 dB. In addition, by thermally heating the elliptical core side-hole fiber in the Sagnac loop, we could obtain a tunable multi-wavelength fiber laser.

© 2007 Optical Society of America

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References

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2007

2006

2005

2004

2003

C. S. Kim, Y. G. Han, R. M. Sova, U. C. Paek, Y. Chung, and J. U. Kang, "Optical fiber modal birefringence measurement based on Lyot-Sagnac interferometer," IEEE Photon. Technol. Lett. 15, 269-271 (2003).
[CrossRef]

2000

X. Shu, S. Jiang, and D. Huang, "Fiber grating Sagnac loop and its multiwavelength laser application," IEEE Photon. Technol. Lett. 12, 980-982 (2000).
[CrossRef]

1999

H. L. An, X. Z. Lin, E. Y. B. Pun, and H. D. Liu, "Multi-wavelength operation of an erbium-doped fiber ring laser using a dual-pass Mach-Zehnder comb filter," Opt. Commun. 169, 159-165 (1999).
[CrossRef]

E. De L. Rosa-Cruz, F. Mendoza-Santoyo, A. N. Starodumov, and M. Pacheco, "Temperature-induced changes of sensitivity in the unbalanced Hi-Bi fiber Sagnac interferometer," Fiber Integr. Opt. 18, 41-48 (1999).
[CrossRef]

1997

1996

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]

N. Park and P. F. Wysocki, "24-Line multiwavelength operation of erbium-doped fiber ring laser," IEEE Photon. Technol. Lett. 8, 1459-1461 (1996)
[CrossRef]

J. Chow, G. Town, B. Eggleton, M. Ibsen, K. Sugden, and I. Bennion, "Multiwavelength generation in an erbium-doped fiber laser using in-fiber comb filters," IEEE Photon. Technol. Lett. 8, 60-62 (1996).
[CrossRef]

Electron. Lett.

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]

Fiber Integr. Opt.

N. Pleros, T. Houbavlis, G. Theophilopoulos, K. Vlachos, C. Bintjas, and H. Avramopoulos, "SOA-based multi-wavelength laser sources," Fiber Integr. Opt. 23, 263-274 (2004).
[CrossRef]

E. De L. Rosa-Cruz, F. Mendoza-Santoyo, A. N. Starodumov, and M. Pacheco, "Temperature-induced changes of sensitivity in the unbalanced Hi-Bi fiber Sagnac interferometer," Fiber Integr. Opt. 18, 41-48 (1999).
[CrossRef]

IEEE Photon. Technol. Lett.

C. S. Kim, Y. G. Han, R. M. Sova, U. C. Paek, Y. Chung, and J. U. Kang, "Optical fiber modal birefringence measurement based on Lyot-Sagnac interferometer," IEEE Photon. Technol. Lett. 15, 269-271 (2003).
[CrossRef]

N. Park and P. F. Wysocki, "24-Line multiwavelength operation of erbium-doped fiber ring laser," IEEE Photon. Technol. Lett. 8, 1459-1461 (1996)
[CrossRef]

J. Chow, G. Town, B. Eggleton, M. Ibsen, K. Sugden, and I. Bennion, "Multiwavelength generation in an erbium-doped fiber laser using in-fiber comb filters," IEEE Photon. Technol. Lett. 8, 60-62 (1996).
[CrossRef]

S. Roh, S. Chung, Y. W. Lee, I. Yoon, and B. Lee, "Channel-spacing- and wavelength-tunable multiwavelength fiber ring laser using semiconductor optical amplifier," IEEE Photon. Technol. Lett. 18, 2302-2304 (2006).
[CrossRef]

X. Shu, S. Jiang, and D. Huang, "Fiber grating Sagnac loop and its multiwavelength laser application," IEEE Photon. Technol. Lett. 12, 980-982 (2000).
[CrossRef]

Opt. Commun.

H. L. An, X. Z. Lin, E. Y. B. Pun, and H. D. Liu, "Multi-wavelength operation of an erbium-doped fiber ring laser using a dual-pass Mach-Zehnder comb filter," Opt. Commun. 169, 159-165 (1999).
[CrossRef]

Opt. Eng.

D. S. Moon, Y. Chung, and Y. G. Han, "Multiwavelength fiber laser based on semiconductor optical amplifier and few-mode fiber gratings," Opt. Eng. 46, 014202 (2007).
[CrossRef]

Opt. Express

Opt. Lett.

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Figures (7)

Fig. 1.
Fig. 1.

The cross-section of fabricated elliptical core side-hole fiber with (a) an elliptical shape, (b) a circular shape.

Fig. 2.
Fig. 2.

(a). The configuration of a Sagnac loop mirror, (b) the transmission spectra of elliptical core side-hole fiber with an elliptical shape (L=10 m, Δλ=1.4 nm), and a circular shape (L=26 m, Δλ=0.8 nm), respectively.

Fig. 3.
Fig. 3.

The experimental setup for the multi-wavelength fiber laser.

Fig. 4.
Fig. 4.

The gain spectra of one SOA and two SOAs when injection current of SOA was 200 mA.

Fig. 5.
Fig. 5.

The output spectra of the fiber laser. (i) elliptical shape (L=10 m, Δλ=1.4 nm): (a) one SOA, (b) two SOAs, (ii) circular shape (L=26 m, Δλ=0.8 nm): (c) one SOA, (d) two SOAs

Fig. 6.
Fig. 6.

Repeatedly scanned output spectra of the multi-wavelength fiber laser. (a) elliptical core side-hole fiber with an elliptical shape (L=10 m, Δλ=1.4 nm), and (b) a circular shape (L=26 m, Δλ=0.8 nm).

Fig. 7.
Fig. 7.

Output spectra of the tunable multi-wavelength fiber laser: (a) an elliptical shape (L=10 m, Δλ=1.4 nm), and (b) a circular shape (L=26 m, Δλ=0.8 nm).

Equations (1)

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1 L dT = 2 π λ B ( 1 B dB dT + 1 L dL dT ) ,

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