Results 11 to 20 of about 409,972 (287)

Optoelectronic parametric oscillator [PDF]

Light: Science & Applications, 2020
AbstractOscillators are one of the key elements in various applications as a signal source to generate periodic oscillations. Among them, an optical parametric oscillator (OPO) is a driven harmonic oscillator based on parametric frequency conversion in an optical cavity, which has been widely investigated as a coherent light source with an extremely ...
Tengfei Hao, Qizhuang Cen, Shanhong Guan, Wei Li, Yitang Dai, Ninghua Zhu, Ming Li   +6 more
openaire   +4 more sources

Multi-cavity optoelectronic oscillators using multicore fibers

Optics Express, 2015
We propose the use of both homogeneous and heterogeneous multicore fibers to implement multi-cavity optoelectronic oscillators. We present design equations and examples that show the potential for unique performance in terms of spectral selectivity, tunability and high-frequency operation.
García Cortijo, Sergi, Gasulla Mestre, Ivana   +1 more
openaire   +5 more sources

Subharmonic injection-locked photonic integrated thin-film lithium niobate optoelectronic oscillator [PDF]

Nanophotonics
Integrated optoelectronic oscillators (OEOs) have emerged as pivotal enablers of compact, energy-efficient solutions for generating high-frequency radio-frequency (RF) signals with exceptional spectral purity – an essential demand in the advancement of ...
Huang Zijun, Ma Rui, Ying Qiang, Hao Peng, Ke Wei, Cai Xinlun, Yao X. Steve   +6 more
doaj   +2 more sources

Time-variant parity-time symmetry in frequency-scanning systems [PDF]

Nature Communications
Parity-time (PT) symmetry is an active research area that provides a variety of new opportunities for different systems with novel functionalities.
Mingjian Li, Tengfei Hao, Guozheng Li, Anle Wang, Yitang Dai, Wei Li, José Capmany, Jianping Yao, Ninghua Zhu, Ming Li   +9 more
doaj   +2 more sources

Temporal locking of pulses in injection locked oscillators [PDF]

Scientific Reports
We demonstrate a novel injection-locking effect in oscillators, which is obtained in both the time and frequency domains. The “temporal-locked” oscillator generates an ultra-low phase noise continuous-wave (CW) signal, accompanied by an ordered train of ...
Vladimir Smulakovsky, Andrei Diakonov, Alexander Katzenlson, Moshe Horowitz   +3 more
doaj   +2 more sources

All-Optical Single-Longitudinal-Mode Forward Brillouin Microwave Oscillator with an Unbalanced Fiber Mach–Zehnder Interferometer [PDF]

Micromachines
An all-optical single-longitudinal-mode (SLM) forward Brillouin microwave oscillator (FB-MO) with an unbalanced Fiber Mach–Zehnder interferometer (UF-MZI) for microwave photonics (MWP) generation is proposed and experimentally investigated.
Xinyue Fang, Wenjun He, Wen Wang, Yi Liu, Yajun You, Qing Yan, Yafei Hou, Zepeng Wu, Lei Yu, Songquan Yan, Mingxing Li, Jian He, Xiujian Chou   +12 more
doaj   +2 more sources

Injection Locking of Optoelectronic Oscillators With Large Delay [PDF]

Journal of Lightwave Technology, 2021
The optoelectronic oscillator is a delay line oscillator that leverages optical fibre technology to realize the large delay required for low phase noise systems. Spurious sidemodes are an artefact of the delay line oscillator, yet treatments of injection
Mehedi Hasan, A. Banerjee, T. Hall
semanticscholar   +1 more source

Effects of Timing Noise on Square-Wave Optoelectronic Oscillators

Applied Sciences, 2021
Optoelectronic oscillators produce microwave-modulated optical beams without external modulation. The most commonly studied types produces narrow-band output, i.e., optical output modulated by a sinusoid, in which case phase noise determines key figures ...
David S. Citrin
doaj   +1 more source

Theoretical Performance Evaluation of Spurious-Tone Suppression of a Multi-Loop Optoelectronic Oscillator Based on Closed-Loop Response Analysis [PDF]

Journal of Electromagnetic Engineering and Science, 2022
We theoretically evaluate the performance of spurious-tone suppression of a multi-loop optoelectronic oscillators (MOEO) based on closed-loop analysis. Spurious tones are unwanted oscillation signals due to the cavity effect of long-length optical fiber ...
Jun-Hyung Cho, Anh Hang Nguyen, Hyo-Sang Jeong, Hyuk-Kee Sung   +3 more
doaj   +1 more source

Self-generation of Möbius solitons and chaotic waveforms in magnonic-optoelectronic oscillators under simultaneous action of optic and magnonic nonlinearities

Journal of Applied Physics, 2022
Self-generation of microwave nonlinear waveforms in the magnonic-optoelectronic oscillator (MOEO) was investigated. Nonlinear dynamics of the MOEO was due to both optical and magnonic paths of the oscillator circuit.
A. Kondrashov, A. Ustinov
semanticscholar   +1 more source