खोज परिणाम - Shaohua Yu
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Digital OFDM-PON Based on Delta–Sigma Modulation Employing Binary IM-DD Channels
प्रकाशित 2017-01-01पूर्ण पाठ प्राप्त करेंIn this paper, a delta–sigma modulation is proposed for the orthogonal frequency division multiplexed-passive optical network (OFDM-PON) to enable transmission of OFDM signals via binary intensity modulation and direct detection (IM-DD) channels. The delta–sigma modulation is a...
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IM/DD-Based 112-Gb/s/lambda PAM-4 Transmission Using 18-Gbps DML
प्रकाशित 2016-01-01पूर्ण पाठ प्राप्त करेंSingle-channel 112-Gb/s PAM-4 transmission based on low-cost intensity modulation and direct detection (IM/DD) optics is experimentally demonstrated over 1-km standard single-mode fiber. By employing a digital precompensation, duobinary encode/decoding with PAM-4 signal and 7-level training-sequence...
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Investigations of Backscattering Effects in Optical Fibers and Their Influences on the Link Monitoring
प्रकाशित 2017-01-01पूर्ण पाठ प्राप्त करेंIn this paper, first, we employed the coupled-mode theory to investigate the backscattering power characteristics of Rayleigh backscattering (RB) and stimulated Brillouin scattering (SBS) both synchronously and precisely. We discovered how the RB and SBS power changed with pump powers and fiber leng...
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LCoS-Based Wavelength-Selective Switch for Future Finer-Grid Elastic Optical Networks Capable of All-Optical Wavelength Conversion
प्रकाशित 2017-01-01पूर्ण पाठ प्राप्त करेंA finer-grid wavelength-selective switch (WSS) based on liquid crystal on silicon is proposed, fabricated, and demonstrated. Based on the cost-effective method, namely combined lenses technique, the focal length is increased so that both the bandwidth setting resolution and grid granularity is impro...
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Digital Code-Division Multiplexing Channel Aggregation for Mobile Fronthaul Architecture With Low Complexity
प्रकाशित 2018-01-01पूर्ण पाठ प्राप्त करेंA low-complexity mobile fronthaul architecture via digital code-division multiplexing (CDM) is proposed to enable channel aggregation of 4G-LTE signals. In comparison with traditional frequency division multiplexing based aggregation scheme, the fast Fourier transformation/inverse fast Fo...
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Modeling of Nonlinear Interference in the Same- Wavelength Bidirectional Coherent Fiber Communication Systems
प्रकाशित 2023-01-01पूर्ण पाठ प्राप्त करेंA detailed theoretical study is conducted on the nonlinear interference in the same-wavelength bidirectional coherent optical fiber communication systems. The Gaussian noise (GN) model used to evaluate nonlinear interference (NLI) in unidirectional systems is applied and extended to bidirectional tr...
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Luminescence lifetime thermometers based on hybrid cuprous halides with exceptional water resistance and giant thermal expansion
प्रकाशित 2025-06-01पूर्ण पाठ प्राप्त करेंAbstract Optical probes hold great promise for temperature sensing owing to their attractive properties including rapid response, high spatial resolution, and remote non-invasive detection. However, the exploration of thermometric probes is hindered by their low relative sensitivity (S r ) or poor s...
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