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Proceedings Paper

Optical-electrical hybrid signal equalizer for ultra-high-speed transmission
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Paper Abstract

We demonstrate an optical–electrical hybrid equalizer, which comprises an optical domain equalizer fabricated using optical filter banks and an electrical filter in a digital domain by a digital signal processing, to experimentally demodulate degraded 40-Gbaud quadrature phase-shift keying (QPSK) signal. The optical signal-to-noise ratio (OSNR) required for a BER of 1 × 10-3 is improved to 7 dB without an optical equalizer (OEQ) under the back-to-back condition. The fluctuation in the OEQ strength between 0–6 dB will not affect signal quality significantly. The signal degradation caused by the frequency response of devices was minimized using by the hybrid equalizer.

Paper Details

Date Published: 7 February 2015
PDF: 6 pages
Proc. SPIE 9388, Optical Metro Networks and Short-Haul Systems VII, 93880N (7 February 2015); doi: 10.1117/12.2078117
Show Author Affiliations
Shinya Maruyama, Aoyama Gakuin Univ. (Japan)
National Institute of Information and Communications Technology (Japan)
Kazunari Tomishige, Aoyama Gakuin Univ. (Japan)
National Institute of Information and Communications Technology (Japan)
Atsushi Kanno, National Institute of Information and Communications Technology (Japan)
Tetsuya Kawanishi, National Institute of Information and Communications Technology (Japan)
Hideyuki Sotobayashi, Aoyama Gakuin Univ. (Japan)


Published in SPIE Proceedings Vol. 9388:
Optical Metro Networks and Short-Haul Systems VII
Atul K. Srivastava; Benjamin B. Dingel; Achyut K. Dutta, Editor(s)

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