Hybrid access network integrated with wireless multilevel vector and wired baseband signals using frequency doubling and no optical filtering

Po Tsung Shih*, Chun-Ting Lin, Wen Jr Jiang, Yu Hung Chen, Jyehong Chen, Sien Chi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

This letter experimentally demonstrated a hybrid access network which supports both radio-over-fiber and fiber-to-the-x systems. A 20-GHz radio-frequency (RF) 312.5-MSymbol/s M-ary phase-shift keying (PSK) signal and a baseband (BB) 1.25-Gb/s on-off keying signal are simultaneously generated and transmitted over an identical distributed infrastructure. The wired BB signal is compatible with the existing passive optical network (PON) system, and the wireless RF PSK signal can also share the same distributed infrastructure. The proposed system has no RF fading issue, no narrowband optical filter at remote node to separate the RF and BB signals, and can carry vector signals. Moreover, a frequency doubling for optical RF signal generation is achieved to reduce the bandwidth requirement of the transmitter. After transmission over 25-km standard signal-mode fiber, the receiver sensitivity penalties are less than 0.5 dB for both the RF and BB channels.

Original languageEnglish
Pages (from-to)857-859
Number of pages3
JournalIEEE Photonics Technology Letters
Volume21
Issue number13
DOIs
StatePublished - 1 Jul 2009

Keywords

  • External modulation
  • Fiber-to-the-home
  • Optical access networks
  • Optical communication
  • Radio-over-fiber (RoF)

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