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Injection locking

About: Injection locking is a research topic. Over the lifetime, 4567 publications have been published within this topic receiving 60942 citations.


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Journal ArticleDOI
TL;DR: In injection locking of optically excited mechanical oscillations of a single, trapped ion, this system appears promising for the detection of ultraweak oscillating forces.
Abstract: We report on injection locking of optically excited mechanical oscillations of a single, trapped ion. The injection locking dynamics are studied by analyzing the oscillator spectrum with a spatially selective Fourier transform technique and the oscillator phase with stroboscopic imaging. In both cases we find excellent agreement with theory inside and outside the locking range. We attain injection locking with forces as low as 5(1)×10^(-24) N so this system appears promising for the detection of ultraweak oscillating forces.

63 citations

Journal ArticleDOI
TL;DR: The demonstration that the phase noise of these nanoscale nonlinear oscillators can be tuned and eventually lessened, represents a key achievement for targeted radio frequency applications using spin torque devices.
Abstract: We investigate experimentally the synchronization of vortex based spin transfer nano-oscillators to an external rf current whose frequency is at multiple integers, as well as at an integer fraction, of the oscillator frequency. Through a theoretical study of the locking mechanism, we highlight the crucial role of both the symmetries of the spin torques and the nonlinear properties of the oscillator in understanding the phase locking mechanism. In the locking regime, we report a phase noise reduction down to $\ensuremath{-}90\text{ }\text{ }\mathrm{dBc}/\mathrm{Hz}$ at 1 kHz offset frequency. Our demonstration that the phase noise of these nanoscale nonlinear oscillators can be tuned and eventually lessened, represents a key achievement for targeted radio frequency applications using spin torque devices.

62 citations

Journal ArticleDOI
TL;DR: In this article, the dynamics of a semiconductor laser subject to optical injection using the method of the Largest Lyapunov Exponent (LLE) is investigated as a function of the frequency detuning ω, the injection strength K and the linewidth enhancement factor α.

62 citations

Journal ArticleDOI
TL;DR: In this article, a theoretical analysis of the noise behavior of a semiconductor laser operating under relatively strong light injection is presented, where the effect of laser bias currents on the laser emission noise is analyzed.
Abstract: Presents a theoretical investigation of the noise behavior of a semiconductor laser operating under relatively strong light injection. Equations have been presented to describe the noise effect through the calculation of the relative intensity noise as well as the carrier-to-noise ratio available at the receiving end. Illustrative examples are given, showing the impact of the master and slave laser bias currents. Also, the injection-locked and free-running operation regimes have been comparatively analyzed. The results show how the noise characteristics are affected by optical injection and, consequently, how the operating conditions must be chosen to reduce this effect. In particular, it is shown, in agreement with previous works, that the master laser emission noise will essentially take the lead. As a result, to improve the noise behavior by injection locking a solitary laser, the use of a low-noise master laser is required. To make it easy to apply the present results to any laser diode under the stable-locking condition, the necessary relations are explicitly given before specifying the parameters of simulation.

62 citations

Journal ArticleDOI
TL;DR: Experimental results of 10 Gb/s wireless communications over a distance of 520 meters in the W-band using photonic upconversion with a high bandwidth photodiode to allow for minimum hardware at the antenna are presented.
Abstract: We present experimental results of 10 Gb/s wireless communications over a distance of 520 meters in the W-band. The transmitter makes use of photonic upconversion with a high bandwidth photodiode to allow for minimum hardware at the antenna. We present results with two receiver configurations. The first uses all electronic methods with a balanced Schottky diode mixer for downconversion, and the second uses photonics to limit the hardware at the receive antenna by photonically generating the local oscillator drive signal and transporting the intermediate frequency signal over a microwave photonic link.

62 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202333
202276
2021107
2020145
2019169
2018146