Carrier-reuse WDM-PON using a shared delay interferometer for separating carriers and subcarriers

Z. Xu, Y. J. Wen, W. D. Zhong, M. Attygalle, X. F. Cheng, Y. Wang, Chao Lu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

21 Citations (Scopus)


We propose a novel optical carrier-reuse scheme for the wavelength-division-multiplexed passive optical network. The scheme is based on a single delay interferometer (DI) at the remote node and reflective semiconductor optical amplifiers (RSOAs) at optical network units as the colorless devices for upstream transmission. The downstream subcarrier signals are optically separated by the DI for baseband detection of the downstream data and the separated optical carriers are used for seeding the RSOAs. Eight-channel upstream and downstream transmission is demonstrated at 1.25 Gb/s using the proposed scheme. The impact of optical carrier-to-subcarrier ratio of downlink signal and seeding light power on performance is also investigated.
Original languageEnglish
Pages (from-to)837-839
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number11
Publication statusPublished - 1 Jun 2007


  • Carrier reuse
  • Passive optical network (PON)
  • Reflective semiconductor optical amplifier (RSOA)
  • Wavelength-division multiplexing (WDM)

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics
  • Physics and Astronomy (miscellaneous)

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