• Optoelectronics Letters
  • Vol. 8, Issue 6, 473 (2012)
Chao GAO*, Xiang-jun XIN, and Chong-xiu YU
Author Affiliations
  • School of Electronic Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
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    Abstract

    This paper proposes a kind of modulation architecture for wavelength-division-multiplexing passive optical network (WDMPON) employing optical differential quadrature phase shift keying (DQPSK) downstream signals and two different modulation formats of re-modulated upstream signals. At the optical line terminal (OLT), 10 Gbit/s signal is modulated with DQPSK. At the optical network unit (ONU), part of the downstream signal is re-modulated with on-off keying (OOK) or inverse-return-to-zero (IRZ). Simulation results show the impact on the system employing NRZ, RZ and carrier-suppressed return-to-zero (CSRZ). The analyses also reflect that the architecture can restrain chromatic dispersion and channel crosstalk, which makes it the best architecture of access network in the future.
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    GAO Chao, XIN Xiang-jun, YU Chong-xiu. Re-modulated technology of WDM-PON employing different DQPSK downstream signals[J]. Optoelectronics Letters, 2012, 8(6): 473
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    Received: Aug. 13, 2012
    Accepted: --
    Posted: Jun. 1, 2012
    Published Online: Jul. 12, 2017
    The Author Email: Chao GAO (aoxiang0612@gmail.com)