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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 6 — Mar. 15, 2009
  • pp: 830–832

All-optical differentiator and high-speed pulse generation based on cross-polarization modulation in a semiconductor optical amplifier

Zhengyong Li and Chongqing Wu  »View Author Affiliations


Optics Letters, Vol. 34, Issue 6, pp. 830-832 (2009)
http://dx.doi.org/10.1364/OL.34.000830


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Abstract

We propose an all-optical intensity differentiation scheme based on cross-polarization modulation (XPolM) in a semiconductor optical amplifier (SOA) while demonstrating the absolute value of differential signal that can be obtained by the SOA-based XPolM of two parts with relative delay from the input signal and well extracted by the polarization filter. The differentiation errors and eye diagrams versus sampling time Δ are investigated for data rate at 12.5 Gbits s , and the minimal error 0.06 is achieved at Δ = 0 . Owing to a much faster polarization response, our scheme bears great potential for all-optical signal processing over 100 Gbits s . By application of the differentiator, we further obtain the 20 GHz short pulse train with a pulse width of 10 ps .

© 2009 Optical Society of America

OCIS Codes
(070.4560) Fourier optics and signal processing : Data processing by optical means
(250.5980) Optoelectronics : Semiconductor optical amplifiers
(260.5430) Physical optics : Polarization

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 19, 2008
Revised Manuscript: February 2, 2009
Manuscript Accepted: February 3, 2009
Published: March 12, 2009

Citation
Zhengyong Li and Chongqing Wu, "All-optical differentiator and high-speed pulse generation based on cross-polarization modulation in a semiconductor optical amplifier," Opt. Lett. 34, 830-832 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-6-830

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