Advanced modulation formats for delivery of heterogeneous wired and wireless access networks

Chi-Wai Chow*, C. H. Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


It is believed that the integration of wired and wireless access networks (or heterogeneous network) will provide high bandwidth and flexibility for both fixed and mobile users in a single and cost-effective platform. Here, we propose and demonstrate a signal remodulated wired and wireless network with wireless signal broadcast. Dark-return-to-zero (DRZ) and polarization-shift-keying (PolSK) signals are used for the downstream wired and wireless applications respectively. At the remote antenna unit (RAU), the PolSK signal is demodulated to produce the binary-phase-shift-keying (BPSK) signal, which will be used for the wireless broadcast application. Signal remodulation is demonstrated using reflective semiconductor optical amplifier (RSOA) as a colorless reflective modulator in the optical networking unit (ONU)/RAU. The downstream signal is remodulated at the ONU/RAU to produce the non-return-to-zero (NRZ) upstream signal.

Original languageEnglish
Pages (from-to)4688-4692
Number of pages5
JournalOptics Communications
Issue number24
StatePublished - 15 Dec 2009


  • Passive optical network
  • Polarization-shift-keying
  • Signal remodulation
  • Wired and wireless access network

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