scholarly journals Contribution of Laser Frequency and Power Fluctuations to the Microwave Phase Noise of Optoelectronic Oscillators

2010 ◽  
Vol 28 (18) ◽  
pp. 2730-2735 ◽  
Author(s):  
Kirill Volyanskiy ◽  
Yanne K. Chembo ◽  
Laurent Larger ◽  
Enrico Rubiola
Keyword(s):  
Phase Noise ◽  
Laser Frequency ◽  
Power Fluctuations ◽  
Optoelectronic Oscillators

scholarly journals Stable and Low-Spurs Optoelectronic Oscillators: A Review

2018 ◽  
Vol 8 (12) ◽  
pp. 2623 ◽  
Author(s):  
Anni Liu ◽  
Jian Dai ◽  
Kun Xu
Keyword(s):  
Phase Noise ◽  
Magnetic Energy ◽  
Microwave Signal ◽  
Optoelectronic Oscillator ◽  
Storage Element ◽  
Spurious Suppression ◽  
Optoelectronic Oscillators ◽  
Phase Noise Performance ◽  
Electro Magnetic ◽  
Magnetic Energy Storage

An optoelectronic oscillator (OEO) is an optoelectronic hybrid oscillator which utilizes ultra-low loss fiber as an electro-magnetic energy storage element, overcoming the limits of traditional microwave oscillators in phase noise performance. Due to their ability to generate ultra-low phase noise microwave signal, optoelectronic oscillators have attracted considerable attentions and are becoming one of the most promising and powerful microwave signal sources. In this paper, we briefly introduce the operation principle and discuss current research on frequency stability and spurious suppression of optoelectronic oscillators.

scholarly journals Dynamical decoupling of laser phase noise in compound atomic clocks

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Sören Dörscher ◽  
Ali Al-Masoudi ◽  
Marcin Bober ◽  
Roman Schwarz ◽  
Richard Hobson ◽  
...  
Keyword(s):  
Phase Noise ◽  
Phase Measurement ◽  
Local Oscillator ◽  
Frequency Instability ◽  
Laser Frequency ◽  
High Signal ◽  
Frequency Noise ◽  
Atomic Clocks ◽  
Dynamical Decoupling ◽  
Measurement Protocol

Abstract The frequency stability of many optical atomic clocks is limited by the coherence of their local oscillator. Here, we present a measurement protocol that overcomes the laser coherence limit. It relies on engineered dynamical decoupling of laser phase noise and near-synchronous interrogation of two clocks. One clock coarsely tracks the laser phase using dynamical decoupling; the other refines this estimate using a high-resolution phase measurement. While the former needs to have a high signal-to-noise ratio, the latter clock may operate with any number of particles. The protocol effectively enables minute-long Ramsey interrogation for coherence times of few seconds as provided by the current best ultrastable laser systems. We demonstrate implementation of the protocol in a realistic proof-of-principle experiment, where we interrogate for 0.5 s at a laser coherence time of 77 ms. Here, a single lattice clock is used to emulate synchronous interrogation of two separate clocks in the presence of artificial laser frequency noise. We discuss the frequency instability of a single-ion clock that would result from using the protocol for stabilisation, under these conditions and for minute-long interrogation, and find expected instabilities of σy(τ) = 8 × 10−16(τ/s)−1/2 and σy(τ) = 5 × 10−17(τ/s)−1/2, respectively.

Loop-length dependent sources of phase noise in optoelectronic oscillators

2010 ◽  
Author(s):  
Eric J. Adles ◽  
Andrew Docherty ◽  
Curtis Menyuk ◽  
Gary Carter ◽  
Olukayode Okusaga ◽  
...  
Keyword(s):  
Phase Noise ◽  
Loop Length ◽  
Optoelectronic Oscillators ◽  
Dependent Sources

Study of the phase noise spectrum in RF injection-locked single-loop optoelectronic oscillators

2021 ◽  
Vol 54 (1) ◽  
Author(s):  
Abhijit Banerjee ◽  
Larissa Aguiar Dantas de Britto ◽  
Gefeson Mendes Pacheco
Keyword(s):  
Phase Noise ◽  
Noise Spectrum ◽  
Single Loop ◽  
Optoelectronic Oscillators

Compensation of Laser Frequency Fluctuations and Phase Noise in 16-QAM Coherent Receivers

2013 ◽  
Vol 25 (5) ◽  
pp. 442-445 ◽  
Author(s):  
Pablo Gianni ◽  
Graciela Corral-Briones ◽  
Carmen Rodriguez ◽  
Mario R. Hueda
Keyword(s):  
Phase Noise ◽  
Laser Frequency ◽  
Coherent Receivers ◽  
Frequency Fluctuations
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