Abstract

We propose a new scheme to generate polarity-switchable ultrawideband (UWB) Gaussian pulses in the optical domain by use of a phase modulator and a reconfigurable asymmetric Mach–Zehnder interferometer (AMZI). In the proposed system, an optical carrier is phase modulated by a Gaussian pulse train and then sent to a first-or second-order AMZI. The system is equivalent to a first- or second-order differentiator for the production of Gaussian UWB monocycle or doublet pulses. The polarity of the generated UWB pulses can be switched by adjusting the phase difference between the two interference components in the AMZI. An experiment is performed. Gaussian monocycle and doublet pulses with fractional bandwidths of about 177% and 140% are generated. The polarity switchability of generated UWB pulses is also experimentally confirmed.

© 2009 Optical Society of America

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References

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  1. G. R. Aiello and G. D. Rogerson, IEEE Microw. Mag. 4, 36 (2003).
    [CrossRef]
  2. J. P. Yao, F. Zeng, and Q. Wang, J. Lightwave Technol. 25, 3219 (2007).
    [CrossRef]
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    [CrossRef] [PubMed]
  4. Y. Dai and J. P. Yao, in Optical Fiber Communication/National Fiber Optic Engineers Conference (Optical Society of America, 2008), paper OThH5.
  5. Q. Wang and J. P. Yao, J. Lightwave Technol. 25, 3626 (2007).
    [CrossRef]
  6. F. Zeng and J. P. Yao, IEEE Photonics Technol. Lett. 18, 2062 (2006).
    [CrossRef]
  7. J. Li, K. Xu, S. Fu, J. Wu, J. T. Lin, M. Tang, and P. Shum, Opt. Express 15, 18156 (2007).
    [CrossRef] [PubMed]
  8. H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
    [CrossRef]
  9. Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.
  10. Q. Wang and J. P. Yao, Opt. Express 15, 16500 (2007).
    [CrossRef] [PubMed]
  11. M. Abtahi, J. Magne, M. Mirshaflei, L. A. Rusch, and S. LaRochelle, J. Lightwave Technol. 26, 628 (2008).
    [CrossRef]

2008 (2)

2007 (4)

2006 (1)

F. Zeng and J. P. Yao, IEEE Photonics Technol. Lett. 18, 2062 (2006).
[CrossRef]

2005 (1)

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

2003 (1)

G. R. Aiello and G. D. Rogerson, IEEE Microw. Mag. 4, 36 (2003).
[CrossRef]

Abtahi, M.

Aiello, G. R.

G. R. Aiello and G. D. Rogerson, IEEE Microw. Mag. 4, 36 (2003).
[CrossRef]

Arnold, J. M.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Baek, Y.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Baumann, I.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Bryce, A. C.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Dai, Y.

Y. Dai and J. P. Yao, in Optical Fiber Communication/National Fiber Optic Engineers Conference (Optical Society of America, 2008), paper OThH5.

Fu, S.

Krijnen, G.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Krysa, A.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

LaRochelle, S.

Li, J.

Lin, J. T.

Magne, J.

Marsh, J. H.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Mirshaflei, M.

Rogerson, G. D.

G. R. Aiello and G. D. Rogerson, IEEE Microw. Mag. 4, 36 (2003).
[CrossRef]

Rusch, L. A.

Schiek, R.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Shum, P.

Sohler, W.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Sorel, M.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Stegeman, G. I.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

Tan, W. K.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Tang, M.

Wang, Q.

Wong, H. Y.

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

Wu, J.

Xu, K.

Yao, J. P.

Q. Wang and J. P. Yao, Opt. Lett. 33, 1017 (2008).
[CrossRef] [PubMed]

Q. Wang and J. P. Yao, Opt. Express 15, 16500 (2007).
[CrossRef] [PubMed]

Q. Wang and J. P. Yao, J. Lightwave Technol. 25, 3626 (2007).
[CrossRef]

J. P. Yao, F. Zeng, and Q. Wang, J. Lightwave Technol. 25, 3219 (2007).
[CrossRef]

F. Zeng and J. P. Yao, IEEE Photonics Technol. Lett. 18, 2062 (2006).
[CrossRef]

Y. Dai and J. P. Yao, in Optical Fiber Communication/National Fiber Optic Engineers Conference (Optical Society of America, 2008), paper OThH5.

Zeng, F.

J. P. Yao, F. Zeng, and Q. Wang, J. Lightwave Technol. 25, 3219 (2007).
[CrossRef]

F. Zeng and J. P. Yao, IEEE Photonics Technol. Lett. 18, 2062 (2006).
[CrossRef]

IEEE Microw. Mag. (1)

G. R. Aiello and G. D. Rogerson, IEEE Microw. Mag. 4, 36 (2003).
[CrossRef]

IEEE Photonics Technol. Lett. (2)

F. Zeng and J. P. Yao, IEEE Photonics Technol. Lett. 18, 2062 (2006).
[CrossRef]

H. Y. Wong, W. K. Tan, A. C. Bryce, J. H. Marsh, J. M. Arnold, A. Krysa, and M. Sorel, IEEE Photonics Technol. Lett. 17, 1677 (2005).
[CrossRef]

J. Lightwave Technol. (3)

Opt. Express (2)

Opt. Lett. (1)

Other (2)

Y. Dai and J. P. Yao, in Optical Fiber Communication/National Fiber Optic Engineers Conference (Optical Society of America, 2008), paper OThH5.

Y. Baek, R. Schiek, G. Krijnen, G. I. Stegeman, I. Baumann, and W. Sohler, in Conference on Lasers and Electro-Optics (Optical Society of America, 1996), p. 297.

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Figures (3)

Fig. 1
Fig. 1

Schematic diagram of the UWB pulse generator. LD, laser diode; PM, phase modulator; PC, polarization controller; PMF, polarization-maintaining fiber; PBS, polarization beam splitter; PD, photodetector.

Fig. 2
Fig. 2

Waveforms and spectra of the Gaussian UWB pulses obtained at the output of the AMZI. (a) Generated UWB monocycle, (b) corresponding electrical spectrum, (c) generated UWB doublet, (d) corresponding electrical spectrum.

Fig. 3
Fig. 3

Temporal relationship between the polarity-switched pulses. (a) Polarity-inverted monocycle pulses. (b) Polarity-inverted doublet pulses.

Equations (5)

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[ E 1 E 2 ] = e j ω c t [ e j [ β PM φ ( t ) + φ 1 ] + e j [ β PM φ ( t τ 1 ) ω c τ 1 + π 2 ] e j [ β PM φ ( t ) + φ 1 + π 2 ] + e j [ β PM φ ( t τ 1 ) ω c τ 1 ] ] .
[ i 1 ( t ) i 2 ( t ) ] [ sin { β PM [ φ ( t ) φ ( t τ 1 ) ] + ω c τ 1 + φ 1 } sin { β PM [ φ ( t ) φ ( t τ 1 ) ] + ω c τ 1 + φ 1 } ] .
[ i 1 ( t ) i 2 ( t ) ] [ ± β PM [ φ ( t ) φ ( t τ 1 ) ] β PM [ φ ( t ) φ ( t τ 1 ) ] ] .
[ i 1 ( t ) i 2 ( t ) ]
[ ± β PM [ φ ( t ) φ ( t τ 1 ) φ ( t τ 2 ) + φ ( t τ 1 τ 2 ) ] β PM [ φ ( t ) φ ( t τ 1 ) φ ( t τ 2 ) + φ ( t τ 1 τ 2 ) ] ] .

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