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Multicore-Fiber-Enabled WSDM Optical Access Network With Centralized Carrier Delivery and RSOA-Based Adaptive Modulation
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2015 (English)In: IEEE PHOTONICS JOURNAL, ISSN 1943-0655, Vol. 7, no 4, 7201309Article in journal (Refereed) Published
Abstract [en]

We proposed and experimentally demonstrated a wavelength-space division multiplexing (WSDM) optical access network architecture with centralized optical carrier delivery utilizing multicore fibers (MCFs) and adaptive modulation based on reflective semiconductor amplifier (RSOA). In our experiment, five of the outer cores are used for undirectional downstream (DS) transmission only, whereas the remaining outer core is utilized as a dedicated channel to transmit upstream (US) signals. Optical carriers for US are delivered from the optical line terminal (OLT) to the optical network unit (ONU) via the inner core and then transmitted back to the OLT after amplification and modulation by the RSOA in the colorless ONU side. The mobile backhaul (MB) service is also supported by the inner core. Wavelengths used in US transmission should be different from that of the MB in order to avoid the Rayleigh backscattering effect in bidirectional transmission. With quadrature phase-shift keying-orthogonal frequency-division multiplexing (QPSK-OFDM) modulation format, the aggregation DS capacity reaches 250 Gb/s using five outer cores and ten wavelengths, and it can be further scaled to 1 Tb/s using 20 wavelengths modulated with 16 QAM-OFDM. For US transmission, 2.5 Gb/s QPSK-OFDM transmission can be achieved just using a low-bandwidth RSOA, and adaptive modulation is applied to the RSOA to further enhance the US data rate to 3.12 Gb/s. As an emulation of high-speed MB transmission, 48 Gb/s inphase and quadrature (IQ) modulated popularization division multiplexing (PDM)-QPSK signal is transmitted in the inner core of MCF and coherently detected in the OLT side. Both DS and US optical signals exhibit acceptable performance with sufficient power budget.

Place, publisher, year, edition, pages
[Feng, Zhenhua; Li, Borui; Tang, Ming; Gan, Lin; Wang, Ruoxu; Lin, Rui; Xu, Zhilin; Fu, Songnian; Deng, Lei; Liu, Shuang] Huazhong Univ Sci & Technol, Next Generat Internet Access Natl Engn Lab NGIA, Sch Opt & Elect Informat, Wuhan 430030, Peoples R China. [Lin, Rui] Royal Inst Technol KTH, Sch Informat & Commun Technol ICT, S-16440 Kista, Sweden. [Tong, Weijun; Long, Shengya; Zhang, Lei; Zhou, Hongyan; Zhang, Rui] Yangtze Opt Fibre & Cable Co Ltd YOFC, State Key Lab Opt Fiber & Cable Mfg Technol, Chengdu 610072, Peoples R China. [Shum, Perry Ping] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore 639798, Singapore., 2015. Vol. 7, no 4, 7201309
Keyword [en]
Optical access network, wavelength-space division multiplexing (WSDM), multicore fiber (MCF), advanced modulation formats, adaptive modulation
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-174242DOI: 10.1109/JPHOT.2015.2445103ISI: 000361069900045ScopusID: 2-s2.0-84934300979OAI: diva2:860038

QC 20151009

Available from: 2015-10-09 Created: 2015-10-02 Last updated: 2015-10-09Bibliographically approved

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