
Proceedings Paper
Variable delay of Gbit/s data using coded Brillouin dynamic gratingsFormat | Member Price | Non-Member Price |
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Paper Abstract
Dynamic Brillouin gratings (DBGs), inscribed by co-modulating two writing pump waves with a bi-phase code, are analyzed theoretically, simulated numerically, demonstrated and characterized experimentally. A comparison is made between modulation by pseudo-random bit sequences (PRBS) and perfect Golomb codes. Numerical analysis shows that Golomb codes provide lower off-peak reflectivity, due to the unique properties of their cyclic auto-correlation function. Golomb coded DBGs can therefor allow for the long variable delay of one-time probe waveforms with higher signal-tonoise ratios, and without averaging. A figure of merit is proposed, in terms of the optical signal-to-noise ratio of reflected waveforms and the delay-bandwidth product of the setup. As an example, the variable delay of return-to-zero, on-off keyed data at 1 Gbit/s rate, by as much as 10 ns, is successfully demonstrated. The eye diagram of the reflected waveform remains open, whereas PRBS modulation of the pump waves results in a closed eye.
Paper Details
Date Published: 21 February 2014
PDF: 9 pages
Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89980W (21 February 2014); doi: 10.1117/12.2047534
Published in SPIE Proceedings Vol. 8998:
Advances in Slow and Fast Light VII
Selim M. Shahriar; Frank A. Narducci, Editor(s)
PDF: 9 pages
Proc. SPIE 8998, Advances in Slow and Fast Light VII, 89980W (21 February 2014); doi: 10.1117/12.2047534
Show Author Affiliations
Yair Antman, Bar-Ilan Univ. (Israel)
Lior Yaron, Tel Aviv Univ. (Israel)
Tomy Langer, Tel Aviv Univ. (Israel)
Lior Yaron, Tel Aviv Univ. (Israel)
Tomy Langer, Tel Aviv Univ. (Israel)
Published in SPIE Proceedings Vol. 8998:
Advances in Slow and Fast Light VII
Selim M. Shahriar; Frank A. Narducci, Editor(s)
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