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Background: Software developers insert log statements in the source code to record program execution information. However, optimizing the number of log statements in the source code is challenging. Machine learning based within-project logging prediction tools, proposed in previous studies, may not be suitable for new or small software projects. For such software projects, we can use cross-project...
We demonstrate combined mode- and wavelength multiplexed transmission of 23 Tbit/s over 17 km conventional graded-index multimode fiber. We selectively couple and receive all spatial modes in the lowest 3 mode-groups of the multimode fiber using photonic-lanterns based mode-couplers. The transmitted signals are recovered by 12×12 MIMO digital signal processing.
We receive the full optical field of a 176-GHz wide, 1.2-Tb/s PDM-16QAM superchannel after 960-km TWRS using a spectrally-sliced coherent receiver. Simultaneous compensation of SPM and XPM with digital backpropagation enables 1 dB of Q-factor improvement.
We transmit 32 WDM channels over 12 spatial and polarization modes of 177 km few-mode fiber at a record spectral efficiency of 32 bit/s/Hz. The transmitted signals are strongly coupled and recovered using 12×12 multiple-input multiple-output digital signal processing.
We experimentally demonstrate multiple-input multiple-output transmission over a 700-km few-mode fiber of a combined 3-space-, 2-polarization-, and 34-wavelength-division multiplex, using low-loss 3-spot mode couplers.
We transmit 16 WDM channels using 20-Gbd QPSK over 12 spatial and polarization modes of 708-km few-mode fiber at a spectral-efficiency-distance product of 11328 km bit/s/Hz. The transmitted signals are recovered using off-line 12 ×12 multiple-input multiple-output digital signal processing.
We transmitted 5 wavelength channels and 6 spatial-and polarization modes over a 184 km long hybrid span few-mode fiber span. Low-loss 3-spot mode couplers are used in combination with backward pumped distributed Raman amplification. The 40-Gbit/s QPSK signals with an aggregate line-rate of 1.2 Tbit/s were recovered by coherent multiple-input-multiple-output off-line digital signal processing.
We transmitted five wavelength channels and six spatial and polarization modes over a 209-km-long hybrid few-mode fiber span. The fiber supports six spatial and polarization modes, and consists of a first section of large effective area depressed-cladding few-mode fiber followed by a graded-index few-mode fiber. The differential group delay is compensated by using fiber spools with differential group...
Low differential group delay (DGD) between the modes of a graded-index few-mode fiber is obtained by combining segments with DGD of opposite sign. Transmission of mode-multiplexed 6×20-GBd QPSK over a record distance of 1200 km is demonstrated.
WDM transmission over 5600 km of ultra-large-area fiber is achieved using an 80-Gbaud all-electronically multiplexed polarization-division multiplexed quadrature phase-shift-keyed (PDM-QPSK) transmitter and off-line intradyne detection with four synchronized 120-GSamples/s, 45-GHz inputs of an oscilloscope prototype.
We experimentally demonstrate multiple-input-multiple-output transmission of a combined 3-space-, and 2-polarization-, and 5-wavelength-division multiplex in a 3-core microstructured fiber over 4200 km. This is the record transmission distance for spatial-division multiplexing in a fiber.
We present a novel low-loss 3-spot mode coupler to selectively address 6 spatial and polarization modes of a few-mode fiber. The coupler is used in a 6×6 MIMO-transmission experiment over a 154-km hybrid span consisting of 129-km depressed-cladding and 25-km graded-index few-mode fiber.
We experimentally demonstrate multiple-input multiple-output transmission over a 209-km hybrid few-mode fiber span of a combined 3-space-, 2-polarization-, and 5-wavelength-division multiplex, using low-loss 3-spot mode couplers and backward-pumped distributed Raman amplification.
We experimentally demonstrate transmission of 6 mode-multiplexed 20-Gbd-QPSK signals over 1200 km of three-core microstructured fiber (3C-MSF). An aggregate single-wavelength capacity of 240 Gbit/s is recovered by off-line 6×6 coherent multiple-input multiple-output (MIMO) digital signal processing.
We experimentally demonstrate 8 dB of mode-equalized distributed Raman gain using a backward pumping scheme. The equivalent noise figure of the amplifier is −1.5 dB, and the amplifier was successfully employed to demonstrate 6-channel mode-multiplexed MIMO transmission over 137-km few-mode fiber.
Studying link structure of the World Wide Web (WWW) is an area which has attracted a lot of interest. Several papers have been published on structural analysis of hyperlinked environments such as the WWW. The WWW can be modeled as a graph and valuable information can be derived by analyzing links between the Web-pages primarily for the purpose of building better search engines. Many novel methods...
Claims typically found at the end of a patent document are one of the key elements of a patent and define the boundaries or scope of protection conferred by a patent. Claims of related patents also need to be read and reviewed carefully by an inventor or a patent attorney at the time of drafting a patent application. We present a method and a tool to do a claim similarity analysis between two different...
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