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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 22 — Nov. 4, 2013
  • pp: 26513–26519

Direct-detection optical OFDM superchannel for long-reach PON using pilot regeneration

Rong Hu, Qi Yang, Xiao Xiao, Tao Gui, Zhaohui Li, Ming Luo, Shaohua Yu, and Shanhong You  »View Author Affiliations

Optics Express, Vol. 21, Issue 22, pp. 26513-26519 (2013)

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We demonstrate a novel long-reach PON downstream scheme based on the regenerated pilot assisted direct-detection optical orthogonal frequency division multiplexing (DDO-OFDM) superchannel transmission. We use the optical comb source to form DDO-OFDM superchannel, and reserve the center carrier as a seed pilot. The seed pilot is further tracked and reused to generate multiple optical carriers at the local exchange. Each regenerated pilot carrier is selected to beat with an adjacent OFDM sub-band at ONU, so that the electrical bandwidth limitation can be much released compared to the conventional DDO-OFDM superchannel detection. With the proposed proof-of-concept architecture, we experimentally demonstrated a 116.7 Gb/s superchannel OFDM-PON system with transmission reach of 100 km, and 1:64 splitting ratio. We analyze the impact of carrier-to-sideband power ratio (CSPR) on system performance. The experiment result shows that, 5 dB power margin is still remained at ONU using such technique.

© 2013 Optical Society of America

OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4250) Fiber optics and optical communications : Networks

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 12, 2013
Revised Manuscript: September 20, 2013
Manuscript Accepted: October 11, 2013
Published: October 28, 2013

Rong Hu, Qi Yang, Xiao Xiao, Tao Gui, Zhaohui Li, Ming Luo, Shaohua Yu, and Shanhong You, "Direct-detection optical OFDM superchannel for long-reach PON using pilot regeneration," Opt. Express 21, 26513-26519 (2013)

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