Abstract

We investigate the gain bandwidth of stimulated Brillouin scattering (SBS) in multistage systems. As we will show, the bandwidth is reduced significantly by the number of stages, which can increase the distortions in cascaded slow-light systems, for instance. However, other applications, which are limited by the minimum bandwidth achievable with SBS, can benefit from the reduced bandwidth. Since the peak value of the SBS gain spectrum is not reduced by this method, the reduced bandwidth can drastically enhance the performance of many different applications, such as the quasi-light storage (QLS). The minimum bandwidth of 10.3 MHz for a one-stage system was reduced down to 5.8 MHz for three stages. With this reduced bandwidth, we achieved a storage time advancement of the QLS method by 60%.

© 2012 Optical Society of America

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References

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2012

2011

2010

2009

2008

L. Thévenaz, Nat. Photonics 2, 474 (2008).
[CrossRef]

2007

2006

T. Schneider, M. Junker, K. U. Lauterbach, and R. Henker, Electron. Lett. 42, 1110 (2006).
[CrossRef]

2005

2002

2000

C. C. Lee and S. Chi, IEEE Photon. Technol. Lett. 12, 672 (2000).
[CrossRef]

Bao, X.

X. Bao and L. Chen, Sensors 11, 4152 (2011).
[CrossRef]

Boyd, R.

R. Boyd, Nonlinear Optics (Academic, 2003).

Bunge, C.-A.

Chen, L.

X. Bao and L. Chen, Sensors 11, 4152 (2011).
[CrossRef]

Chi, S.

C. C. Lee and S. Chi, IEEE Photon. Technol. Lett. 12, 672 (2000).
[CrossRef]

Delavaux, J.

Henker, R.

S. Preußler, K. Jamshidi, A. Wiatrek, R. Henker, C.-A. Bunge, and T. Schneider, Opt. Express 17, 15790 (2009).
[CrossRef]

T. Schneider, M. Junker, K. U. Lauterbach, and R. Henker, Electron. Lett. 42, 1110 (2006).
[CrossRef]

Herrez, M.

Jamshidi, K.

Jamshidid, K.

Junker, M.

T. Schneider, M. Junker, K. U. Lauterbach, and R. Henker, Electron. Lett. 42, 1110 (2006).
[CrossRef]

Lauterbach, K. U.

T. Schneider, M. Junker, K. U. Lauterbach, and R. Henker, Electron. Lett. 42, 1110 (2006).
[CrossRef]

Lee, C. C.

C. C. Lee and S. Chi, IEEE Photon. Technol. Lett. 12, 672 (2000).
[CrossRef]

Preußler, S.

Schneider, T.

Song, K.

Thévenaz, L.

Toulouse, J.

Tur, M.

Wiatrek, A.

Wise, A.

Xia, Y.

Xing, L.

Yeniay, A.

Yi, L.

Zadok, A.

Zhan, L.

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Figures (4)

Fig. 1.
Fig. 1.

Basic setup of a SBS amplifier with multiple equal stages. Each SBS block consists of a fiber, a pump wave, and a circulator. The A block symbolizes an attenuator.

Fig. 2.
Fig. 2.

Experimental setup for the multistage Brillouin system (LD, laser diode; MZM, Mach–Zehnder modulator; EDFA, erbium-doped fiber amplifier; Att, attenuator; SSMF, standard single-mode fiber; Osci, oscilloscope; OSA, optical spectrum analyzer; PD, photo diode; Lo, local oscillator; ESA, electrical spectrum analyzer. The gray parts are inserted for QLS.).

Fig. 3.
Fig. 3.

Measured and normalized SBS gain for one (dotted), two (dashed), and three (solid) SBS stages. The inset shows the measured (triangles) and calculated (spheres) FWHM bandwidth versus the number of stages.

Fig. 4.
Fig. 4.

Measurement of a “1101” bit sequence with a reduced Brillouin gain bandwidth with the reference signal on the left side and the different extracted copies of the fiber based QLS.

Equations (5)

Equations on this page are rendered with MathJax. Learn more.

G=eg=exp(g0(ΓB2)2(ωω0)2+(ΓB2)2),
Δω=ΓBln2g0ln2,
g0=gpPpLeffAeff;
Gges=engnA=exp(ng0(ΓB2)2(ωω0)2+(ΓB2)2nA),
Δω=ΓBln2ng0ln2.

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