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- 摘要
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- 实验方案
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[IEEE 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - St. Petersburg and Moscow, Russia (2020.1.27-2020.1.30)] 2020 IEEE Conference of Russian Young Researchers in Electrical and Electronic Engineering (EIConRus) - Optical Signal Propagation Simulation in Rectangular Microwaveguides
摘要： The simulation of the optical modes that propagate inside the microwaveguides of a rectangular cross-section was carried out. The impact of geometry of the microwaveguide cross-section on the group velocity of the modes is analyzed. It is demonstrated that the group velocity has a non-linear dependence on a microwaveguide core width. This dependence is determined by the energy redistribution between the core and the cladding of the microwaveguide.
关键词： group velocity,microwave photonics,integrated optics,propagation loss,optical microwaveguides
更新于2025-09-19 17:13:59
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[IEEE 2019 International Topical Meeting on Microwave Photonics (MWP) - Ottawa, ON, Canada (2019.10.7-2019.10.10)] 2019 International Topical Meeting on Microwave Photonics (MWP) - Widely Tunable Parity-Time-Symmetric Optoelectronic Oscillator Based on a Silicon Microdisk Resonator
摘要： A widely frequency-tunable parity-time (PT)-symmetric optoelectronic oscillator (OEO) based on a silicon microdisk resonator (MDR) is proposed and experimentally demonstrated. In the proposed OEO, two mutually coupled optoelectronic loops having an identical geometry with one having a gain and the other a loss, which are equal in magnitude, light implemented by employing the reciprocity of are propagation in an MDR, to form a PT-symmetric OEO. Thanks to the PT symmetry, single-frequency oscillation with low phase noise is implemented. The tuning of the frequency is realized by thermally tuning the MDR. The proposed OEO is demonstrated experimentally. A wide frequency tunable range from 2 to 12 GHz is realized. The phase noise is measured to be -105 dBc/Hz at a 10 kHz frequency offset, which can be further reduced if the loop length is increased.
关键词： Silicon photonics,Optoelectronic oscillator (OEO),Parity-time symmetric,Microwave photonic bandpass filter,Microwave photonics,microdisk resonator
更新于2025-09-16 10:30:52
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[IEEE 2019 International Topical Meeting on Microwave Photonics (MWP) - Ottawa, ON, Canada (2019.10.7-2019.10.10)] 2019 International Topical Meeting on Microwave Photonics (MWP) - A Monolithically Integrated and Widely Tunable Silicon Photonic Microwave Photonic Filter
摘要： A monolithically integrated and widely frequency-tunable silicon photonic microwave photonic filter (MPF) is reported. All components including a grating coupler, a wideband phase modulator, a high Q factor ring resonator and wideband a photodetector (PD) are monolithically integrated on a silicon photonic chip. The passband functionality is implemented by translating the spectral response of the ring resonator to the microwave domain based on phase modulation to intensity modulation conversion. The frequency tunability is implemented by tuning the wavelength of the optical carrier injected into the chip. The proposed MPF is fabricated and its performance is experimentally evaluated. The 3-dB bandwidth is measured to be 2.7 GHz and the frequency-tunable range is 12 GHz.
关键词： signal processing,Integrated microwave photonics,active silicon photonics
更新于2025-09-16 10:30:52
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Fully Reconfigurable Waveguide Bragg Gratings for Programmable Photonic Signal Processing
摘要： Fiber Bragg gratings have been invented for over three decades and have been intensively employed in optical communications systems and sensor systems. The key limitation of a fiber Bragg grating is that once fabricated, it is hard to be tuned or with very limited tunability via thermal or mechanical tuning. Recently, great efforts have been directed into the study of realizing Bragg gratings on silicon-on-insulator (SOI) platform. The key advantage of Bragg gratings implemented based on SOI is that the gratings can be fast and electrically reconfigured with the use of free-carrier plasma dispersion effect in silicon, which can be employed for fast programmable photonic signal processing. In this paper, Bragg gratings based on SOI that are electrically programmable will be reviewed, and their use for advanced programmable optical and microwave signal processing will be discussed.
关键词： photonic integrated circuits,silicon photonics,Bragg gratings,optical signal processing,Microwave photonics
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Optics and Microwave Photonics Technologies Illuminate the Future of Space TT&C System
摘要： The space TT&C system is the only means for humans to conduct life cycle tracking, telemetry, command and spacecraft. Multi-function, high-precision, real-time TT&C system has always been the goal pursued by researchers in TT&C technology. These features are based on high-speed and high-precision manipulation of microwave signals, but are limited by ‘electronic bottlenecks’. The generation, control and processing of wideband signals is extremely complex and impossible to accomplish in traditional electronics. Photonic technology's inherently large bandwidth, low transmission loss, and anti-electromagnetic interference make it a key enabling technology for breaking the TT&C system bandwidth and high-precision measurement bottleneck and 'illuminating the future of TT&C system.' Meanwhile, the optical subsystem is light in weight, small in size, and integrable. Therefore, the introduction of photonic technology may change the system of the existing TT&C system. This paper summarizes the main research progress of optical technology in TT&C system at home and abroad, discusses the key technologies of laser and microwave photon technology in TT&C system, and forecasts its development trend.
关键词： optics,TT&C,microwave photonics,communication,laser
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Photonics-based receiver for decoupled velocity and range measurement
摘要： Photonics-based receiver for decoupled velocity and range measurement is proposed and demonstrated. A dual-chirp LFM signal is used. At the receiver, the reference signal and the received echoes are modulated to the optical carrier, respectively. By introducing the micro- wave photonic image reject mixing, the frequency components corresponding to the target range and ve- locity can be obtained simultaneously. No complex simulation source in electrical digital domain is needed, and no special requirement with the dual-chirp LFM sig- nals is required. A proof-of-concept experiment is taken. A dual-chirp LFM signal centered at 10 GHz with a 4- GHz bandwidth is used. The target range and the Dop- pler-frequency shift are successfully obtained.
关键词： microwave photonics,LFM signal,dual-chirp,velocity,range
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Single Bandpass Microwave Photonic Filter based on Gain-switched Distributed-feedback Laser
摘要： In this paper, a single bandpass microwave photonic filter (MPF) based on a gain-switched distributed feedback (DFB) laser is proposed and experimentally demonstrated. Self-phase modulation (SPM) effect is explored the performance of the proposed MPF. A single passband is achieved for the proposed MPF, which can be tuned from 1 GHz to 39 GHz. A theoretical model describing the principle of the proposed MPF is derived, which is confirmed by experimental results.
关键词： Tunable filter,Microwave photonics,Semiconductor lasers
更新于2025-09-16 10:30:52
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High-Speed and High-Resolution Microwave Photonic Interrogation of a Fiber-Optic Refractometer With Plasmonic Spectral Comb
摘要： Microwave photonic interrogation of a high-speed and high-resolution refractive index (RI) sensor based on a tilted fiber Bragg grating with surface plasmon resonance (TFBG-SPR) is proposed and experimentally demonstrated. Instead of demodulating the wavelength shift or intensity change of a TFBG-SPR spectrum in the optical domain, we convert the TFBG-SPR spectrum to the time domain based on spectral shaping (SS) and wavelength-to-time (WTT) mapping and use a digital signal processor (DSP) to extract the RI information at a high speed and high resolution. In the experiment, when an Au-coated TFBG is immersed in a solution, the TFBG-SPR spectrum will produce a dip. When the RI changes, the location of the dip in the TFBG-SPR spectrum will shift, which is a function of the RI. By passing a broadband frequency-chirped optical pulse generated by a frequency swept laser source to the TFBG-SPR and detecting the optical pulse at the output of the TFBG-SPR at a photodetector (PD), due to SS-WTT mapping, a temporal waveform with its shape identical to the optical spectrum is produced. A DSP is then used to extract the SPR envelope information from the temporal waveform. By monitoring the changes of the SPR envelope, the RI information is interrogated with a high resolution of 1.123×10-6 RIU at a high speed over 20 kHz.
关键词： Surface plasmon resonance,Tilted fiber Bragg grating,Microwave photonics,Refractive index measurement
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - High-linearity silicon modulator based on a reconfigurable microring-assisted Mach-Zehnder interferometer
摘要： We report a high-linearity silicon electro-optic modulator based on single ring-assisted Mach-Zehnder Interferometer (MZI). The best spurious-free dynamic range of third-order intermodulation distortion (IMD3) is 109 dB·Hz2/3. The linearity is comparable to the commercial lithium niobate modulators. The device can find potential applications in microwave photonic systems.
关键词： microwave photonics,linearity,silicon modulator
更新于2025-09-16 10:30:52
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[IEEE 2019 International Workshop on Fiber Optics in Access Networks (FOAN) - Sarajevo, Bosnia and Herzegovina (2019.9.2-2019.9.4)] 2019 International Workshop on Fiber Optics in Access Networks (FOAN) - 5th-Generation Mobile Access Networks Assisted by Integrated Microwave Photonics
摘要： This paper addresses the needs of mobile access network and presents the benefits of integrated microwave photonics for 5th-generation (5G) mobile networks. Full convergence of the optical fiber and the wireless segments in the form of microwave photonics is described. The usage of integrated microwave photonics in optically supported wireless networks can provide a high-capacity mobile system based on the micro-wave and millimeter-wave frequency bands.
关键词： millimeter wave,wireless networks,integrated microwave photonics,radio-over-fiber,cellular architecture,5th-Generation
更新于2025-09-16 10:30:52