This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated us...This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated using SPICE in 180 nm CMOS technology with supply voltages of ±1.25 V. The simulation results demonstrate increase in input range for FGMOS based voltage buffer and analog inverter and maximum power dissipation of 0.5 mW, 1.9 mW and 0.429 mW for FGMOS based voltage buffer, analog inverter and WTA circuits, respectively. The proposed circuits are intended to find applications in low voltage, low power consumer electronics.展开更多
Digital processing is our preferred way to manipulate data,as it gives us unparalleled flexibility.However,as the volume of information increases,fully digital electronic solutions are encountering memory,latency,and ...Digital processing is our preferred way to manipulate data,as it gives us unparalleled flexibility.However,as the volume of information increases,fully digital electronic solutions are encountering memory,latency,and power challenges.A renewed interest is growing in analog signal processing,and photonics integrated circuits could really be a game-changing technology.展开更多
Propelled by the rise of artificial intelligence,cloud services,and data center applications,next-generation,low-power,local-oscillator-less,digital signal processing(DSP)-free,and short-reach coherent optical communi...Propelled by the rise of artificial intelligence,cloud services,and data center applications,next-generation,low-power,local-oscillator-less,digital signal processing(DSP)-free,and short-reach coherent optical communication has evolved into an increasingly prominent area of research in recent years.Here,we demonstrate DSP-free coherent optical transmission by analog signal processing in frequency synchronous optical network(FSON)architecture,which supports polarization multiplexing and higher-order modulation formats.The FSON architecture that allows the numerous laser sources of optical transceivers within a data center can be quasi-synchronized by means of a tree-distributed homology architecture.In conjunction with our proposed pilot-tone assisted Costas loop for an analog coherent receiver,we achieve a record dual-polarization 224-Gb/s 16-QAM 5-km mismatch transmission with reset-free carrier phase recovery in the optical domain.Our proposed DSP-free analog coherent detection system based on the FSON makes it a promising solution for next-generation,low-power,and high-capacity coherent data center interconnects.展开更多
With the advancement of artificial intelligence,optic in-sensing reservoir computing based on emerging semiconductor devices is high desirable for real-time analog signal processing.Here,we disclose a flexible optomem...With the advancement of artificial intelligence,optic in-sensing reservoir computing based on emerging semiconductor devices is high desirable for real-time analog signal processing.Here,we disclose a flexible optomemristor based on C_(27)H_(30)O_(15)/FeOx heterostructure that presents a highly sensitive to the light stimuli and artificial optic synaptic features such as short-and long-term plasticity(STP and LTP),enabling the developed optomemristor to implement complex analogy signal processing through building a real-physical dynamic-based in-sensing reservoir computing algorithm and yielding an accuracy of 94.88%for speech recognition.The charge trapping and detrapping mediated by the optic active layer of C_(27)H_(30)O_(15) that is extracted from the lotus flower is response for the positive photoconductance memory in the prepared optomemristor.This work provides a feasible organic−inorganic heterostructure as well as an optic in-sensing vision computing for an advanced optic computing system in future complex signal processing.展开更多
Programmable photonic integrated circuits(PICs)have emerged as a promising platform for analog signal processing.Programmable PICs,as versatile photonic integrated platforms,can realize a wide range of functionalities...Programmable photonic integrated circuits(PICs)have emerged as a promising platform for analog signal processing.Programmable PICs,as versatile photonic integrated platforms,can realize a wide range of functionalities through software control.However,a significant challenge lies in the efficient management of a large number of programmable units,which is essential for the realization of complex photonic applications.In this paper,we propose an innovative approach using Ising-model-based intelligent computing to enable dynamic reconfiguration of large-scale programmable PICs.In the theoretical framework,we model the Mach–Zehnder interferometer(MZI)fundamental units within programmable PICs as spin qubits with binary decision variables,forming the basis for the Ising model.The function of programmable PIC implementation can be reformulated as a path-planning problem,which is then addressed using the Ising model.The states of MZI units are accordingly determined as the Ising model evolves toward the lowest Ising energy.This method facilitates the simultaneous configuration of a vast number of MZI unit states,unlocking the full potential of programmable PICs for high-speed,large-scale analog signal processing.To demonstrate the efficacy of our approach,we present two distinct photonic systems:a 4×4 wavelength routing system for balanced transmission of four-channel NRZ/PAM-4 signals and an optical neural network that achieves a recognition accuracy of 96.2%.Additionally,our system demonstrates a reconfiguration speed of 30 ms and scalability to a 56×56 port network with 2000 MZI units.This work provides a groundbreaking theoretical framework and paves the way for scalable,high-speed analog signal processing in large-scale programmable PICs.展开更多
A novel type of realization of Current-Mode(C-M)Continuous-nine(C-T)active biquad filtersemploying MOTA (Multi-output Operational fonsconductance Amplifier)and capacitance is proposed inthis paper.The performance of t...A novel type of realization of Current-Mode(C-M)Continuous-nine(C-T)active biquad filtersemploying MOTA (Multi-output Operational fonsconductance Amplifier)and capacitance is proposed inthis paper.The performance of the basic circuit is discussed and the Synthesis procedure based on SFG(Signal mow Graph)is given for generating C-M,C-T active biquad filter systsmatically,and the computersimulation is carried out using 1.2mm CMOS parameters and the results show that the realization of the filter is really suitable for monolithic high frequency application.展开更多
We propose and numerically demonstrate an ultrafast real-time ordinary differential equation （ODE） computing unit in optical field based on a silicon microring resonator, operating in the critical coupling region as...We propose and numerically demonstrate an ultrafast real-time ordinary differential equation （ODE） computing unit in optical field based on a silicon microring resonator, operating in the critical coupling region as an optical temporal differentiator. As basic building blocks of a signal processing system, a subtractor and a splitter are included in the proposed structure. This scheme is featured with high speed, compact size and integration on a siliconon-insulator （SOl） wafer. The size of this computing unit is only 35 μm × 45 μm. In this paper, the performance of the proposed structure is theoretically studied and analyzed by numerical simulations.展开更多
A full-band direct-conversion receiver using a microwave photonic in-phase and quadrature （I/Q） mixer is proposed and experimentally evaluated in terms of radio frequency （RF） range, port isolation, phase imbalanc...A full-band direct-conversion receiver using a microwave photonic in-phase and quadrature （I/Q） mixer is proposed and experimentally evaluated in terms of radio frequency （RF） range, port isolation, phase imbalance, conversion gain, noise figure, spurious-free dynamic range, and error vector magnitude. The proposed microwave photonic I/Q mixer shows significant advantages in locM oscillator leakage and I/Q phase imbalance over entire RF bands, which are recognized as major drawbacks of conventional direct-conversion receivers.展开更多
A novel compact optoelectronic oscillator（OEO） employing a Fabry-Perot（FP） resonant electro-optic（EO）modulator is proposed and experimentally demonstrated.The resonant modulator is used as the optical storage el...A novel compact optoelectronic oscillator（OEO） employing a Fabry-Perot（FP） resonant electro-optic（EO）modulator is proposed and experimentally demonstrated.The resonant modulator is used as the optical storage element as well as the mode selection element,which can greatly reduce the system complexity and make the system more portable.Moreover,the optical resonance and electrical transmission response for the FP resonant EO modulator are theoretically and experimentally studied.The proposed OEO oscillates at 10 and 20 GHz in the proof-of-concept experiment,and the corresponding single-sideband phase noise can reach below-118 and-108 dBc/Hz at 1 MHz offset frequency,respectively.展开更多
文摘This paper proposes novel floating-gate MOSFET (FGMOS) based Voltage Buffer, Analog Inverter and Winner-Take-All (WTA) circuits. The proposed circuits have low power dissipation. All proposed circuits are simulated using SPICE in 180 nm CMOS technology with supply voltages of ±1.25 V. The simulation results demonstrate increase in input range for FGMOS based voltage buffer and analog inverter and maximum power dissipation of 0.5 mW, 1.9 mW and 0.429 mW for FGMOS based voltage buffer, analog inverter and WTA circuits, respectively. The proposed circuits are intended to find applications in low voltage, low power consumer electronics.
文摘Digital processing is our preferred way to manipulate data,as it gives us unparalleled flexibility.However,as the volume of information increases,fully digital electronic solutions are encountering memory,latency,and power challenges.A renewed interest is growing in analog signal processing,and photonics integrated circuits could really be a game-changing technology.
基金supported by the National Natural Science Foundation of China(Grant Nos.62405250 and 62471404)the China Postdoctoral Science Foundation(Grant No.2024M762955)+1 种基金the Key Project of Westlake Institute for Optoelectronics(Grant No.2023GD003)the Optical Com-munication and Sensing Laboratory,School of Engineering,Westlake University.
文摘Propelled by the rise of artificial intelligence,cloud services,and data center applications,next-generation,low-power,local-oscillator-less,digital signal processing(DSP)-free,and short-reach coherent optical communication has evolved into an increasingly prominent area of research in recent years.Here,we demonstrate DSP-free coherent optical transmission by analog signal processing in frequency synchronous optical network(FSON)architecture,which supports polarization multiplexing and higher-order modulation formats.The FSON architecture that allows the numerous laser sources of optical transceivers within a data center can be quasi-synchronized by means of a tree-distributed homology architecture.In conjunction with our proposed pilot-tone assisted Costas loop for an analog coherent receiver,we achieve a record dual-polarization 224-Gb/s 16-QAM 5-km mismatch transmission with reset-free carrier phase recovery in the optical domain.Our proposed DSP-free analog coherent detection system based on the FSON makes it a promising solution for next-generation,low-power,and high-capacity coherent data center interconnects.
基金supported by the Key Project of Chongqing Natural Science Foundation Joint Fund[CSTB2023NSCQ-LZX0103,(G.Z.)]Chongqing Natural Science Foundation[CSTB2024NSCQ-MSX0012,(C.L.)]+1 种基金Fundamental Research Funds for the Central Universities[SWUZLPY03,(G.Z.)]Fundamental Research Funds for the Central Universities[Swu020019,(G.Z.):SWU-XDJH202319,(G.Z.)1].
文摘With the advancement of artificial intelligence,optic in-sensing reservoir computing based on emerging semiconductor devices is high desirable for real-time analog signal processing.Here,we disclose a flexible optomemristor based on C_(27)H_(30)O_(15)/FeOx heterostructure that presents a highly sensitive to the light stimuli and artificial optic synaptic features such as short-and long-term plasticity(STP and LTP),enabling the developed optomemristor to implement complex analogy signal processing through building a real-physical dynamic-based in-sensing reservoir computing algorithm and yielding an accuracy of 94.88%for speech recognition.The charge trapping and detrapping mediated by the optic active layer of C_(27)H_(30)O_(15) that is extracted from the lotus flower is response for the positive photoconductance memory in the prepared optomemristor.This work provides a feasible organic−inorganic heterostructure as well as an optic in-sensing vision computing for an advanced optic computing system in future complex signal processing.
基金Youth Innovation Promotion Association of the Chinese Academy of Sciences(2022111)International Partnership Program of Chinese Academy of Sciences(100GJHZ2022028GC)+1 种基金Natural Science Foundation of Beijing Municipality(Z210005)National Natural Science Foundation of China(62135014,62235011)。
文摘Programmable photonic integrated circuits(PICs)have emerged as a promising platform for analog signal processing.Programmable PICs,as versatile photonic integrated platforms,can realize a wide range of functionalities through software control.However,a significant challenge lies in the efficient management of a large number of programmable units,which is essential for the realization of complex photonic applications.In this paper,we propose an innovative approach using Ising-model-based intelligent computing to enable dynamic reconfiguration of large-scale programmable PICs.In the theoretical framework,we model the Mach–Zehnder interferometer(MZI)fundamental units within programmable PICs as spin qubits with binary decision variables,forming the basis for the Ising model.The function of programmable PIC implementation can be reformulated as a path-planning problem,which is then addressed using the Ising model.The states of MZI units are accordingly determined as the Ising model evolves toward the lowest Ising energy.This method facilitates the simultaneous configuration of a vast number of MZI unit states,unlocking the full potential of programmable PICs for high-speed,large-scale analog signal processing.To demonstrate the efficacy of our approach,we present two distinct photonic systems:a 4×4 wavelength routing system for balanced transmission of four-channel NRZ/PAM-4 signals and an optical neural network that achieves a recognition accuracy of 96.2%.Additionally,our system demonstrates a reconfiguration speed of 30 ms and scalability to a 56×56 port network with 2000 MZI units.This work provides a groundbreaking theoretical framework and paves the way for scalable,high-speed analog signal processing in large-scale programmable PICs.
文摘A novel type of realization of Current-Mode(C-M)Continuous-nine(C-T)active biquad filtersemploying MOTA (Multi-output Operational fonsconductance Amplifier)and capacitance is proposed inthis paper.The performance of the basic circuit is discussed and the Synthesis procedure based on SFG(Signal mow Graph)is given for generating C-M,C-T active biquad filter systsmatically,and the computersimulation is carried out using 1.2mm CMOS parameters and the results show that the realization of the filter is really suitable for monolithic high frequency application.
基金Acknowledgements This work was partly supported by the National Natural Science Foundation of China （Grant Nos. 61077052 and 61125504）, Foundation of Ministry of Education of China （No. 20110073110012）, and Science and Technology Commission of Shanghai Municipality （No. 11530700400）.
文摘We propose and numerically demonstrate an ultrafast real-time ordinary differential equation （ODE） computing unit in optical field based on a silicon microring resonator, operating in the critical coupling region as an optical temporal differentiator. As basic building blocks of a signal processing system, a subtractor and a splitter are included in the proposed structure. This scheme is featured with high speed, compact size and integration on a siliconon-insulator （SOl） wafer. The size of this computing unit is only 35 μm × 45 μm. In this paper, the performance of the proposed structure is theoretically studied and analyzed by numerical simulations.
基金supported in part by the National 863Program of China(No.2015AA016903)the National Natural Science Foundation of China(No.61431003,61601049,and 61401411)+1 种基金the Innovation Foundation of China Electronics Technology Group Corporation(CETC)the Innovation Foundation of Key Laboratory of Aerospace Information Applications at CETC
文摘A full-band direct-conversion receiver using a microwave photonic in-phase and quadrature （I/Q） mixer is proposed and experimentally evaluated in terms of radio frequency （RF） range, port isolation, phase imbalance, conversion gain, noise figure, spurious-free dynamic range, and error vector magnitude. The proposed microwave photonic I/Q mixer shows significant advantages in locM oscillator leakage and I/Q phase imbalance over entire RF bands, which are recognized as major drawbacks of conventional direct-conversion receivers.
基金supported in part by the National Natural Science Foundation of China(No.61501051)the Postdoctoral Science Foundation of China(No.2016M590067)
文摘A novel compact optoelectronic oscillator（OEO） employing a Fabry-Perot（FP） resonant electro-optic（EO）modulator is proposed and experimentally demonstrated.The resonant modulator is used as the optical storage element as well as the mode selection element,which can greatly reduce the system complexity and make the system more portable.Moreover,the optical resonance and electrical transmission response for the FP resonant EO modulator are theoretically and experimentally studied.The proposed OEO oscillates at 10 and 20 GHz in the proof-of-concept experiment,and the corresponding single-sideband phase noise can reach below-118 and-108 dBc/Hz at 1 MHz offset frequency,respectively.
