Multicore-Fiber-Enabled WSDM Optical Access Network With Centralized Carrier Delivery and RSOA-Based Adaptive Modulation
Zhenhua Feng,Borui Li,Ming Tang,Lin Gan,Ruoxu Wang,Rui Lin,Zhilin Xu,Songnian Fu,Lei Deng,Weijun Tong,Long Shengya,Lei Zhang,Hongyan Zhou,Zhang Rui,Shuang Liu,Perry Ping Shum +15 more
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TLDR
In this article, the authors 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).Abstract:
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 in-phase 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.read more
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Fiber Bragg gratings in heterogeneous multicore fiber for directional bending sensing
Hailiang Zhang,Hailiang Zhang,Zhifang Wu,Zhifang Wu,Perry Ping Shum,Perry Ping Shum,Ruoxu Wang,Xuan Quyen Dinh,Songnian Fu,Weijun Tong,Ming Tang +10 more
TL;DR: In this article, the fabrication of fiber Bragg gratings (FBGs) in a trench-assisted heterogeneous multicore fiber (MCF) is presented, where two obviously different Bragg reflection peaks are obtained due to the slight difference of refractive indices between the center core and the outer cores.
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Highly sensitive refractive index sensor based on D-shaped PCF with gold-graphene layers on the polished surface
TL;DR: In this article, a D-shaped photonic crystal fiber (PCF) sensor in the infrared spectrum is proposed to detect the analytes/liquids of different refractive indices (RIs) ranging from 1.32 to 1.40.
Journal ArticleDOI
Spatial-Division Multiplexed Mach–Zehnder Interferometers in Heterogeneous Multicore Fiber for Multiparameter Measurement
Lin Gan,Ruoxu Wang,Deming Liu,Li Duan,Shuang Liu,Songnian Fu,Borui Li,Zhenhua Feng,Huifeng Wei,Weijun Tong,Ping Shum,Ming Tang +11 more
TL;DR: In this paper, a novel spatial-division multiplexed Mach-Zehnder interferometer (MZI) structure was proposed for simultaneous measurement of temperature and strain in heterogeneous multicore fiber.
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Ultra-high capacity WDM-SDM optical access network with self-homodyne detection downstream and 32QAM-FBMC upstream.
TL;DR: The results show that a 4 × 6 × 200-Gb/s DS transmission can be realized over 37 km 7-core fiber without carrier frequency offset (CFO) and phase noise (PN) compensation even using 10 MHz linewidth DFB lasers.
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Highly sensitive SPR PCF biosensors based on Ag/TiN and Ag/ZrN configurations
Ahmed H. El-Saeed,Ahmed E. Khalil,Mohamed Farhat O. Hameed,Mohammad Y. Azab,Salah S. A. Obayya +4 more
TL;DR: In this paper, a surface plasmon resonance (SPR) bimetallic photonic crystal fiber (PCF) biosensor using full vectorial finite element method was numerically presented and analyzed.
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