Open Access1-Tb/s WDM-OFDM-PON System With Subband Access Scheme and Flexible Subcarrier-Level Bandwidth Allocation
Author(s) -
Cheng Lei,
Minghua Chen,
Hongwei Chen,
Sigang Yang,
Ying Yu,
Shizhong Xie
Publication year - 2013
Publication title -
ieee photonics journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 73
eISSN - 1943-0655
pISSN - 1943-0647
DOI - 10.1109/jphot.2013.2238617
Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics
A novel subband access scheme for multiband high-speed orthogonal frequency division multiplexing (OFDM) passive optical network (PON) is proposed, where the granularity of the bandwidth allocation is as small as the bandwidth of just one subcarrier and the ONUs only receives the desired subcarriers according to the bandwidth allocation strategy from the whole downstream OFDM signal without band limitation. Since the ONUs do not have to receive a complete OFDM band, low-bandwidth and low-speed devices can be used to reduce ONU cost. The algorithm used in the scheme is also explained in detail, and a 1-Tb/s experimental system is successfully established to prove the feasibility of the proposed scheme.