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We propose two enabling technologies for single-carrier Nyquist frequency division multiplexing transceiver, pilot based carrier phase recovery and I/Q modulator bias drift compensation. 420Gbit/s net capacity is demonstrated and the maximum unrepeated reach is 160km.
Intra-channel nonlinear noise waveform is predicted by novel nonlinear models. The accuracy reaches 95% for various modulation formats and link configurations. Using the more accurate model, the compensation performance is increased by 1 dB.
Conventional Gardner clock recovery method fails on Nyquist signal with sinc pulse shape. A novel algorithm is proposed and verified by experiment. It has lower timing jitter, and its tolerance to various distortions is investigated.
We demonstrate scalable optical comb- and heterodyning-based generation, optical and 1.3-m wireless transmission, and electrical heterodyne detection of multiband OFDM up to 38.2 Gb/s occupying 14.4-GHz RF bandwidth, for high-capacity optical-wireless links in 75–110 GHz.
We propose a hybrid fiber wireless sensor network based on the existing PON infrastructure. The feasibility of remote sensing and PON convergence is experimentally proven by transmitting direct-sequence spread-spectrum wireless sensing and 2.5Gbps GPON signals.
We propose a novel low-cost and colorless WDM-PON architecture by using all VCSELs-based optical injection locking technique. A bidirectional transmission system over 26 km SMF at 5 Gbps without optical amplification is successfully achieved.
We report on measured optical fiber W-band wireless channel characteristics such as frequency response, channel loss and fading, directivity, channel capacity and phase noise. Our proposed system performs a sextuple frequency up-conversion after 20 km of fiber transmission, followed by a W-band wireless link. Our experimental measurements are intended to provide engineering rules for designing hybrid...
In this paper, we propose a novel WDM-PON architecture to support efficient and bandwidth-scalable virtual private network (VPN) emulation over both inter-PON and intra-PON. The virtual ring link for the VPN communications among ONUs is realized by using additionally low-cost optical passive components and OFDMA technology. Moreover, the downstream traffic wavelength is reused for the upstream traffic...
We propose a novel ultra-broadband reconfigurable photonic harmonic mixer functioning as a millimeter-wave down-converter for multigigabit wireless applications. Based on frequency conversion implemented by an optical frequency comb generator, the photonic mixer is able to operate up to 100GHz without high frequency RF components. The feasibility of the approach is experimentally validated by down-converting...
We experimentally demonstrate a 5-Gb/s fiber-wireless transmission system combining optical polarization-division-multiplexing (PDM) and wireless multiple-input, multiple-output (MIMO) spatial multiplexing technologies. The optical-wireless channel throughput is enhanced by achieving a 4b/s/Hz spectral efficiency. Based on the implementation of constant modulus algorithm (CMA), the 2×2 MIMO wireless...
We theoretically analyzed and experimentally demonstrated a novel mm-wave generation using cascaded Mach-Zehnder modulators(MZMs). Without need for any optical filter or electrical phase shifter, low phase-noise and relatively stable mm-wave is obtained.
The edge-triggered generation of baseband ultra-wideband (UWB) monocycle pulse using a dual-parallel Mach-Zehnder modulator is proposed and experimentally demonstrated. And further the performance of the signal transmitted by fiber link is studied.
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