Extending the coverage of user-diversified IM-DD PON by FDM: a mathematical model with experimental verification
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AbstractFuture passive optical networks (PONs) call for more flexibility to support diversified users with various rate demands
and link qualities. Using traditional time-division multiplexing (TDM), the concept of a flexible rate PON was proposed
to accommodate more users with link diversity by rate adaptation. In this Letter, we reveal the PON coverage can be
further extended through frequency-division multiplexing
(FDM) in the presence of multiuser diversity, namely, (i)
there exist users with frequency-dependent link conditions
and (ii) the link conditions exhibit disparity among users.
We build a mathematical model and propose an optimization algorithm based on the binary tree search to optimize
diversity gain. We experimentally verify its feasibility by
studying the diversity gain concerning chromatic dispersion,
optical path loss, and signal-to-noise ratio (SNR) variation in
a 200G-class intensity-modulation direct-detection (IM-DD)
system.
and link qualities. Using traditional time-division multiplexing (TDM), the concept of a flexible rate PON was proposed
to accommodate more users with link diversity by rate adaptation. In this Letter, we reveal the PON coverage can be
further extended through frequency-division multiplexing
(FDM) in the presence of multiuser diversity, namely, (i)
there exist users with frequency-dependent link conditions
and (ii) the link conditions exhibit disparity among users.
We build a mathematical model and propose an optimization algorithm based on the binary tree search to optimize
diversity gain. We experimentally verify its feasibility by
studying the diversity gain concerning chromatic dispersion,
optical path loss, and signal-to-noise ratio (SNR) variation in
a 200G-class intensity-modulation direct-detection (IM-DD)
system.
All Author(s) ListPeiji Song, Yuan Liu, Zhouyi Hu, Chun-kit Chan, Di Che
Journal nameOSA Optics Letters
Year2024
Month5
Volume Number49
Issue Number9
PublisherOptica
Place of PublicationUSA
Pages2457 - 2460
ISSN0146-9592
eISSN1539-4794
LanguagesEnglish-United States
Keywordsoptical communications
