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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 38, Iss. 22 — Nov. 15, 2013
  • pp: 4701–4704

Experimental demonstration of localized Brillouin gratings with low off-peak reflectivity established by perfect Golomb codes

Yair Antman, Lior Yaron, Tomi Langer, Moshe Tur, Nadav Levanon, and Avi Zadok  »View Author Affiliations

Optics Letters, Vol. 38, Issue 22, pp. 4701-4704 (2013)

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Dynamic Brillouin gratings (DBGs), inscribed by comodulating two writing pump waves with a perfect Golomb code, are demonstrated and characterized experimentally. Compared with pseudo-random bit sequence (PRBS) modulation of the pump waves, the Golomb code provides lower off-peak reflectivity due to the unique properties of its cyclic autocorrelation function. Golomb-coded DBGs allow the long variable delay of one-time probe waveforms with higher signal-to-noise ratios, and without averaging. As an example, the variable delay of return-to-zero, on–off keyed data at a 1Gbit/s rate, by as much as 10 ns, is demonstrated successfully. The eye diagram of the reflected waveform remains open, whereas PRBS modulation of the pump waves results in a closed eye. The variable delay of data at 2.5Gbit/s is reported as well, with a marginally open eye diagram. The experimental results are in good agreement with simulations.

© 2013 Optical Society of America

OCIS Codes
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(290.5900) Scattering : Scattering, stimulated Brillouin
(190.2055) Nonlinear optics : Dynamic gratings

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 12, 2013
Manuscript Accepted: September 22, 2013
Published: November 11, 2013

Yair Antman, Lior Yaron, Tomi Langer, Moshe Tur, Nadav Levanon, and Avi Zadok, "Experimental demonstration of localized Brillouin gratings with low off-peak reflectivity established by perfect Golomb codes," Opt. Lett. 38, 4701-4704 (2013)

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