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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 12 — Jun. 11, 2007
  • pp: 7275–7280

An optical threshold function based on polarization rotation in a single semiconductor optical amplifier

R. Geldenhuys, Y. Liu, J.J. Vegas Olmos, F.W. Leuschner, G.D. Khoe, and H.J.S. Dorren  »View Author Affiliations

Optics Express, Vol. 15, Issue 12, pp. 7275-7280 (2007)

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Optical threshold functions are a basic building block for all-optical signal processing, and this paper investigates a threshold function design reliant on a single active element. An optical threshold function based on nonlinear polarization rotation in a single semiconductor optical amplifier is proposed. It functions due to an induced modification of the birefringence of a semiconductor optical amplifier caused by an externally injected optical control signal. It is shown that switching from both the TE to the TM mode and vice versa is possible. The measured results are supported by simulation results based on the SOA rate equations.

© 2007 Optical Society of America

OCIS Codes
(070.4340) Fourier optics and signal processing : Nonlinear optical signal processing
(190.0190) Nonlinear optics : Nonlinear optics

ToC Category:
Nonlinear Optics

Original Manuscript: January 26, 2007
Revised Manuscript: April 23, 2007
Manuscript Accepted: April 27, 2007
Published: May 30, 2007

R. Geldenhuys, Y. Liu, J. J. Vegas Olmos, F. W. Leuschner, G. D. Khoe, and H. J. S. Dorren, "An optical threshold function based on polarization rotation in a single semiconductor optical amplifier," Opt. Express 15, 7275-7280 (2007)

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  1. E.C. Mos, J.J.L. Hoppenbrouwers, M.T. Hill, M.W. Blüm, J.J.H.B. Schleipen, H. de Waardt, "Optical neuron by use of a laser diode with injection seeding and external optical feedback," Trans. Neural Networks 11, 988-996 (2000). [CrossRef]
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  5. H.J.S. Dorren, D. Lenstra, Y. Liu, M.T. Hill, G.D. Khoe, "Nonlinear polarization rotation in semiconductor optical amplifiers: theory and application to all-optical flip-flop memories," J. Quantum Electron. 39, 141-148, (2003). [CrossRef]
  6. T.D. Visser, D. Lenstra, H. Blok, A. Fasolino, "Propagation of Polarized Waves in Semiconductor Laser Amplifiers," Proc. SPIE,  3283, 675-682, (1998). [CrossRef]
  7. Y. Takahashi, A. Neogi, H. Kawaguchi, "Polarization dependent nonlinear gain in semiconductor optical amplifiers," J. Quantum Electron. 34, 1660-1672, (1998). [CrossRef]

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