Abstract

We propose and analyze experimentally a high-speed polarization-independent lead magnesium niobate titanate (PMNT) electro-optic switch using a π-shifted fiber Sagnac interferometer (FSI). In the proposed switch, the PMNT high-speed electro-optic ceramic is used as a phase retarder for two counterpropagating waves, which can switch the energy between the reflection and transmission ports of the FSI. Because of an initial π shift introduced into the FSI by actively adjusting the polarization controller, the power response of the switch is independent of the polarization orientation of the incident light, which induces the polarization-independent characteristic of the switch. An optical switch with cross talk lower than 25dB and a switching time of less than 200ns is experimentally investigated. The insertion loss and electric hysteresis property are also demonstrated. Finally, a scheme to form the n×n switch matrix is proposed.

© 2010 Optical Society of America

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References

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2007 (2)

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H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

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D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
[CrossRef]

Aimez, V.

Bahamin, B.

Cai, H.

Chen, Q.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Chen, X.

Cohen, N.

Fang, Z.

Gan, J.

Geng, J.

Golub, I.

Grondin, E.

Huo, J.

Jiang, H.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Konforti, N.

Leibner, B.

Li, K. K.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Liu, F.

Liu, K.

Liu, L.

Mendlovic, D.

Mony, M.

Mortimore, D. B.

D. B. Mortimore, J. Lightwave Technol. 6, 1217 (1988).
[CrossRef]

Pan, Z.

Pang, F.

Plant, D. V.

Qu, R.

Shen, L.

Simova, E.

Wan, N.

Wang, Q.

Wang, Y.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Yao, J.

Ye, Q.

Yin, Y.

Zhang, R.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Zou, Y. K.

H. Jiang, Y. K. Zou, Q. Chen, K. K. Li, R. Zhang, and Y. Wang, Proc. SPIE 5644, 380 (2005).
[CrossRef]

Zuo, Y.

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Figures (5)

Fig. 1
Fig. 1

Experimental setup of the high-speed orientation-free electro-optic switch: PMNT, high-speed electro-optic coefficient phase retarder; and SM, single-mode fiber.

Fig. 2
Fig. 2

Variation of normalized powers of switch with the applied voltage for different polarization states.

Fig. 3
Fig. 3

Variation of on–off voltage space of switch with the nth on–off voltage.

Fig. 4
Fig. 4

Measurement of switching time.

Fig. 5
Fig. 5

Schematic diagram of the high-speed n × n switch matrix.

Equations (4)

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

I 1 = I 0 ( 1 sin 2 δ 2 sin 2 2 θ ) ,
I 2 = I 0 sin 2 δ 2 sin 2 2 θ ,
I 1 = I 0 sin 2 δ 2 ,
I 2 = I 0 cos 2 δ 2 .

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