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您的检索式：作者名="MIAOFENG LI"
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| 1 | Silicon intensity Mach–Zehnder modulator for single lane 100 Gb/s applications显示文摘In this paper, a substrate removing technique in a silicon Mach–Zehnder modulator(MZM) is proposed and demonstrated to improve modulation bandwidth. Based on the novel and optimized traveling wave electrodes,the electrode transmission loss is reduced, and the electro-optical group index and 50 Ω impedance matching are improved, simultaneously. A 2 mm long substrate removed silicon MZM with the measured and extrapolated 3 dB electro-optical bandwidth of >50 GHz and 60 GHz at the-8 V bias voltage is designed and fabricated.Open optical eye diagrams of up to 90 GBaud∕s NRZ and 56 GBaud∕s four-level pulse amplitude modulation(PAM-4) are experimentally obtained without additional optical or digital compensations. Based on this silicon MZM, the performance in a short-reach transmission system is further investigated. Single-lane 112 Gb∕s and 128 Gb∕s transmissions over different distances of 1 km, 2 km, and 10 km are experimentally achieved based on this high-speed silicon MZM. | MIAOFENG LI LEI WANG XIANG LI XI XIAO AND SHAOHUA YU | 2018 | Photonics Research2018，6，2： | 18 |
| 2 | 800 Gbit/s transmission over 1 km single-mode fiber using a four-channel silicon photonic transmitter显示文摘We demonstrate the optical transmission of an 800 Gbit/s(4×200 Gbit/s)pulse amplitude modulation-4(PAM-4)signal and a 480 Gbit/s(4×120 Gbit/s)on–off-keying(OOK)signal by using a high-bandwidth(BW)silicon photonic(SiP)transmitter with the aid of digital signal processing(DSP).In this transmitter,a four-channel SiP modulator chip is co-packaged with a four-channel driver chip,with a measured 3 dB BW of 40 GHz.DSP is applied in both the transmitter and receiver sides for pre-/post-compensation and bit error rate(BER)calculation.Back-to-back(B2B)BERs of the PAM-4 signal and OOK signal are first measured for each channel of the transmitter with respect to a variety of data rates.Similar BER performance of four channels shows good uniformity of the transmitter between different channels.The BER penalty of the PAM-4 and OOK signals for 500 m and 1 km standard single-mode fiber(SSMF)transmission is then experimentally tested by using one channel of the transmitter.For a 200 Gbit/s PAM-4 signal,the BER is below the hard-decision forward error correction(HD-FEC)threshold for B2B and below the soft-decision FEC(SD-FEC)threshold after 1 km transmission.For a 120 Gbit/s OOK signal,the BER is below SD-FEC threshold for B2B.After 500 m and 1 km transmission,the data rate of the OOK signal shrinks to 119 Gbit/s and 118 Gbit/s with the SD-FEC threshold,respectively.Finally,the 800 Gbit/s PAM-4 signal with 1 km transmission is achieved with the BER of all four channels below the SD-FEC threshold. | Hongguang Zhang Miaofeng Li Yuguang Zhang Di Zhang Qiwen Liao Jian He Shenglei Hu Bo Zhang Lei Wang Xi Xiao Nan Qi Shaohua Yu | 2020 | Photonics Research2020，8，11： | 5 |
| 3 | Highly efficient iridium-catalyzed asymmetric hydrogenation of unprotected fl-enamine esters显示文摘 | Hou Guohua Li Wei Ma Miaofeng | 2010 | J Am Chem Soc2010，132，12： | 1 |
| 4 | Oxygen vacancies confined in porous Co_(3)V_(2)O_(8)sheets for durable and high-energy aqueous sodium-ion capacitors显示文摘Sodium-ion capacitors have the potential to deliver high energy,power density,and excellent cycling stability.In this study,ultrathin Co_(3)V_(2)O_(8)nanosheets are successfully synthesized through an one-pot hydrothermal reaction and a subsequent doping reconfiguration-induced vacancy-forming process.Abundant oxygen vacancies and high porosity are observed in the Co_(3)V_(2)O_(8)electrode and result in excellent electrochemical performance in 1 M NaOH and Na_(2)SO_(4)electrolytes.The cathode has a large specific capacity(@NaOH),high-rate capability(@NaOH),wide voltage window(@Na_(2)SO_(4)),and favorable long-cycle stability.Ex-situ X-ray diffraction and X-ray photoelectron spectroscopy show that the Co_(3)V_(2)O_(8)electrode displays a battery-like behavior related to OH−ions in the alkaline NaOH electrolyte.By contrast,in the neutral Na_(2)SO_(4)electrolyte,Co_(3)V_(2)O_(8)mainly shows an intercalation/extraction behavior with Na+ions.Density functional theory calculation suggests that oxygen vacancy leads to a new state located in the bandgap,which greatly improves the electron transfer efficiency and reduces the sodiation energy barrier of Co_(3)V_(2)O_(8)in the neutral Na_(2)SO_(4)electrolyte.Moreover,when paired with a high-voltage activated carbon(AC)anode,full-cell Co_(3)V_(2)O_(8)//Na_(2)SO_(4)//AC delivers high energy/power densities(89.6 Wh·kg^(−1)/330 W·kg^(−1)). | Anchun Tang Chubin Wan Xianhe Meng Xiangcao Li Xiaoyu Hu Miaofeng Huang Xin Ju | 2022 | Nano Research2022，15，6： | 0 |
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