Abstract

We demonstrate new optical techniques for externally controlling the latchable output power of a semiconductor-optical-amplifier-based flip-flop. Optical ‘set’ and ‘reset’ signals increase and decrease the refractive index, respectively, via cross-phase modulation (XPM). Set signals, which deplete the carrier density, have wavelengths between 1533 and 1568 nm, and powers as low as 22 µW. Reset is performed with carrier-generating ‘positive’ optical pulses at 1306 and 1466 nm, and minimum powers below 1 mW. These techniques are useful for digital optical-processing functions such as bit-length conversion, retiming, and demultiplexing.

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References

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  1. R.-P. Bra n, C. Caspar,H.-M. Foisel,K.Heimes, B. Strebel, N. Keil, and H.H.Yao, "Transparent switching node for optical freq enc division multiplexed signals," Electron Lett. 29, 912-913 (1993).
    [CrossRef]
  2. J. Leuthold, P. A. Besse, J. Eckner, E. Gamper, M. Duelk, and H. Melchior, "All-optical space switches with gain and principally ideal extinction ratios," IEEE J. Quantum Electron. 34, 622- 633 (1998).
    [CrossRef]
  3. R. Hess, M. Duelk, W. Vogt, E.Gamper, E. Gini, P. A.Besse, H.Melchior, K. S. Jepsen, B. Mikkelsen, M. Vaa, H. N. Poulsen, A. T. Clausen, K. E. St bkjaer, S. Bouchoule, and F. Devaux, "Simultaneous all-optical add and drop multiplexing of 40 Gbit/s OTDM signals using monolithicall integrated Mach-Zehnder interferometer," Electron Lett. 34, 579-80 (1998).
    [CrossRef]
  4. T. Durhuus, C. Joergensen, B. Mikkelsen, R.J.S.Pedersen, and K.E. Stubkjaer, "All optical wavelength conversion by SOA's in a Mach-Zehnder configuration," IEEE Photon. Tech. Lett. 6 53-55, (1994).
    [CrossRef]
  5. H. Kawaguchi, I. H. White, M. J. Offside, and J. E. Carrol, "Ultrafast switching in polarization-bistable laser diodes," Opt. Lett. 17, 130-132 (1992).
    [CrossRef] [PubMed]
  6. K. Nonaka, H. Tsuda, H. Uenohara, H. Iwamura, and T. Kurokawa, "Optical nonlinear characteristics of a side-injection light-controlled laser diode with a multiple-quantum-well saturable absorption region," IEEE Photon. Tech. Lett. 5, 139 -141 (1993).
    [CrossRef]
  7. N. Ogasawara and R. Ito, "Static and dynamic properties of nonlinear semiconductor lasers amplifiers," Jpn. J. Appl. Phys. 25, L739-L742 (1986).
    [CrossRef]
  8. K. Inoue, "All-optical flip-flop operation in an optical bistable device using two lights of different frequencies," Opt. Lett. 12, 918-920 (1987).
    [CrossRef] [PubMed]
  9. D. N. Maywar and G. P. Agrawal, "Low-power all-optical switching in active semiconductor chirped periodic structures," Opt. Express 3, 440-446 (1998). http://www.opticsexpress.org/oearchive/source/6998.htm
    [CrossRef] [PubMed]
  10. A. E. Willner and W. Shieh, "Optimal spectral and power parameters for all-optical wavelength shifting - single stage, fanout, and cascadability," IEEE J. Lightwave Tech. 13, 771-781 (1995).
    [CrossRef]
  11. I. Cha, M. Kitamura, H. Honmo , and I. Mito, "1.5 µm band travelling-wave semiconductor optical amplifiers with window facet structure," Electron. Lett. 25, 1241-1242 (1989).
    [CrossRef]
  12. M. J. Adams, D. A. O. Davies, M. C. Tatham, and M. A. Fisher, "Nonlinearities in semiconductor laser amplifiers," Opt. Quantum Electron. 27, 1-13 (1995).
    [CrossRef]
  13. R. J. Manning, and D. A. O. Davies, and J. K. Lucek, "Recovery rates in semiconductor laser amplifiers: Optical and electrical bias dependencies," Electron. Lett. 30, 1233-1234 (1994).
    [CrossRef]

Other (13)

R.-P. Bra n, C. Caspar,H.-M. Foisel,K.Heimes, B. Strebel, N. Keil, and H.H.Yao, "Transparent switching node for optical freq enc division multiplexed signals," Electron Lett. 29, 912-913 (1993).
[CrossRef]

J. Leuthold, P. A. Besse, J. Eckner, E. Gamper, M. Duelk, and H. Melchior, "All-optical space switches with gain and principally ideal extinction ratios," IEEE J. Quantum Electron. 34, 622- 633 (1998).
[CrossRef]

R. Hess, M. Duelk, W. Vogt, E.Gamper, E. Gini, P. A.Besse, H.Melchior, K. S. Jepsen, B. Mikkelsen, M. Vaa, H. N. Poulsen, A. T. Clausen, K. E. St bkjaer, S. Bouchoule, and F. Devaux, "Simultaneous all-optical add and drop multiplexing of 40 Gbit/s OTDM signals using monolithicall integrated Mach-Zehnder interferometer," Electron Lett. 34, 579-80 (1998).
[CrossRef]

T. Durhuus, C. Joergensen, B. Mikkelsen, R.J.S.Pedersen, and K.E. Stubkjaer, "All optical wavelength conversion by SOA's in a Mach-Zehnder configuration," IEEE Photon. Tech. Lett. 6 53-55, (1994).
[CrossRef]

H. Kawaguchi, I. H. White, M. J. Offside, and J. E. Carrol, "Ultrafast switching in polarization-bistable laser diodes," Opt. Lett. 17, 130-132 (1992).
[CrossRef] [PubMed]

K. Nonaka, H. Tsuda, H. Uenohara, H. Iwamura, and T. Kurokawa, "Optical nonlinear characteristics of a side-injection light-controlled laser diode with a multiple-quantum-well saturable absorption region," IEEE Photon. Tech. Lett. 5, 139 -141 (1993).
[CrossRef]

N. Ogasawara and R. Ito, "Static and dynamic properties of nonlinear semiconductor lasers amplifiers," Jpn. J. Appl. Phys. 25, L739-L742 (1986).
[CrossRef]

K. Inoue, "All-optical flip-flop operation in an optical bistable device using two lights of different frequencies," Opt. Lett. 12, 918-920 (1987).
[CrossRef] [PubMed]

D. N. Maywar and G. P. Agrawal, "Low-power all-optical switching in active semiconductor chirped periodic structures," Opt. Express 3, 440-446 (1998). http://www.opticsexpress.org/oearchive/source/6998.htm
[CrossRef] [PubMed]

A. E. Willner and W. Shieh, "Optimal spectral and power parameters for all-optical wavelength shifting - single stage, fanout, and cascadability," IEEE J. Lightwave Tech. 13, 771-781 (1995).
[CrossRef]

I. Cha, M. Kitamura, H. Honmo , and I. Mito, "1.5 µm band travelling-wave semiconductor optical amplifiers with window facet structure," Electron. Lett. 25, 1241-1242 (1989).
[CrossRef]

M. J. Adams, D. A. O. Davies, M. C. Tatham, and M. A. Fisher, "Nonlinearities in semiconductor laser amplifiers," Opt. Quantum Electron. 27, 1-13 (1995).
[CrossRef]

R. J. Manning, and D. A. O. Davies, and J. K. Lucek, "Recovery rates in semiconductor laser amplifiers: Optical and electrical bias dependencies," Electron. Lett. 30, 1233-1234 (1994).
[CrossRef]

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Figures (4)

Fig. 1.
Fig. 1.

All-optical flip-flop. Optical output is controlled by optical input signals.

Fig. 2.
Fig. 2.

Experimental system.

Fig. 3.
Fig. 3.

All-optical flip-flop operation. (a)1567-nm set and 1306-nm reset signals controlling (b) the output power of the 1547-nm holding beam.

Fig. 4.
Fig. 4.

Broad spectral range of control signals. (a) Demonstrated spectral range of set pulses compared to the ASE spectrum of the DFB SOA. Flip-flop operation using (b) 1537-nm set and 1306-nm reset signals, and (c) 1567-nm set and 1466-nm reset signals

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