Abstract

A novel approach to generate microwave signals is presented by employing a dual-wavelength erbium-doped fiber ring laser. By using a delay interferometer as a comb filter cascaded with a tunable bandpass filter and a saturable absorber formed by an unpumped polarization-maintaining erbium-doped fiber, a stable wavelength-tunable dual-wavelength single longitudinal-mode laser is achieved. A microwave signal at 20.07GHz with a linewidth of <25kHz is demonstrated by beating the two wavelengths at a photodetector.

© 2008 Optical Society of America

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References

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2006 (1)

X. F. Chen, Z. C. Deng, and J. P. Yao, IEEE Trans. Microwave Theory Tech. 54, 804 (2006).
[CrossRef]

2005 (1)

2004 (1)

1997 (1)

1996 (1)

M. Hyodo, M. Tani, S. Matsuura, N. Onodera, and K. Sakai, Electron. Lett. 32, 1589 (1996).
[CrossRef]

1995 (1)

1992 (1)

J. J. O'Reilly, P. M. Lane, R. Heidemann, and R. Hofstetter, Electron. Lett. 28, 2309 (1992).

1989 (1)

K. J. Williams, L. Goldberg, R. D. Esman, M. Dagenais, and J. F. Weller, Electron. Lett. 25, 1242 (1989).
[CrossRef]

1983 (1)

L. Goldberg, H. F. Taylor, J. F. Weller, and D. M. Bloom, Electron. Lett. 19, 491 (1983).
[CrossRef]

Electron. Lett. (4)

K. J. Williams, L. Goldberg, R. D. Esman, M. Dagenais, and J. F. Weller, Electron. Lett. 25, 1242 (1989).
[CrossRef]

L. Goldberg, H. F. Taylor, J. F. Weller, and D. M. Bloom, Electron. Lett. 19, 491 (1983).
[CrossRef]

M. Hyodo, M. Tani, S. Matsuura, N. Onodera, and K. Sakai, Electron. Lett. 32, 1589 (1996).
[CrossRef]

J. J. O'Reilly, P. M. Lane, R. Heidemann, and R. Hofstetter, Electron. Lett. 28, 2309 (1992).

IEEE Trans. Microwave Theory Tech. (1)

X. F. Chen, Z. C. Deng, and J. P. Yao, IEEE Trans. Microwave Theory Tech. 54, 804 (2006).
[CrossRef]

J. Lightwave Technol. (2)

Opt. Lett. (2)

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Figures (6)

Fig. 1
Fig. 1

Proposed dual-wavelength fiber laser. PD, photodetector; DI, delay interferometer; OSA, optical spectrum analyzer: ESA, electrical spectrum analyzer.

Fig. 2
Fig. 2

Schematic of delay interferometer.

Fig. 3
Fig. 3

Measured spectrum for the (a) passband filter, (b) DI, and (c) combined filter.

Fig. 4
Fig. 4

Measured output spectrum of the dual wavelength laser with a wavelength spacing of 0.16 nm .

Fig. 5
Fig. 5

Electrical frequency spectrum of the beating signal observed at the output of the photodetecter with a span of 24.5 GHz .

Fig. 6
Fig. 6

Detail of electrical frequency spectrum of the beating signal with a span of 2 MHz .

Equations (1)

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P out = E i 2 2 ( 1 cos ( 2 π c Δ t λ + Δ φ + π 2 ) ) .

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