Journal ArticleDOI
Dual-Frequency Laser at 1.5 $\mu$ m for Optical Distribution and Generation of High-Purity Microwave Signals
Gregoire Pillet,Loïc Morvan,Marc Brunel,Fabien Bretenaker,Daniel Dolfi,Marc Vallet,Jean-Pierre Huignard,A. Le Floch +7 more
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TLDR
In this article, the stabilization of the beatnote of an Er,Yb:glass dual-frequency laser at 1.5 GHz with and without an external microwave reference is described.Abstract:
We describe the stabilization of the beatnote of an Er,Yb:glass dual-frequency laser at 1.5 mum with and without an external microwave reference. In the first case, a classical optical phase-locked loop (OPLL) is used, and absolute phase noise levels as low as -117 dBrad2/Hz at 10 kHz from the carrier are reported. In the second case one or two fiber-optic delay lines are used to lock the frequency of the beatnote. Absolute phase noise levels as low as -107 dBrad2/Hz at 10 kHz from the carrier are measured, fairly independant of the beatnote frequency varying from 2 to 6 GHz. An analysis of the phase noise level limitation is presented in the linear servo-loop theory framework. The expected phase noise level calculated from the measurement of the different noise sources fits well with the predictions.read more
Citations
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Advances in terahertz communications accelerated by photonics
TL;DR: In this paper, the state-of-the-art technologies on photonics-based terahertz communications are compared with competing technologies based on electronics and free-space optical communications.
Journal ArticleDOI
Microwave synthesizer using an on-chip Brillouin oscillator
TL;DR: Generation of highly coherent microwaves using a chip-based device that derives stability from high optical quality factor is reported, which has a record low electronic white-phase-noise floor for a microcavity-based oscillator and is used as the optical, voltage-controlled oscillator in the first demonstration of a photonic-based, microwave frequency synthesizer.
Journal ArticleDOI
Electro-optical frequency division and stable microwave synthesis
TL;DR: Electro-optical approach to optical frequency division and microwave generation by using a tunable electrical oscillator to create dual combs through phase modulation of two optical signals that have a stable difference frequency.
Journal ArticleDOI
Experimental demonstration of a tunable dual-frequency semiconductor laser free of relaxation oscillations
Ghaya Baili,Loic Morvan,Mehdi Alouini,Daniel Dolfi,Fabien Bretenaker,Isabelle Sagnes,Arnaud Garnache +6 more
TL;DR: Tunable dual-frequency oscillation is demonstrated in a vertical external-cavity surface-emitting laser and the class-A dynamics of this laser enables one to suppress the electrical phase noise in excess that is usually observed in the vicinity of the beat note.
Journal ArticleDOI
Ultralow-noise photonic microwave synthesis using a soliton microcomb-based transfer oscillator.
Erwan Lucas,Pierre Brochard,Romain Bouchand,Stéphane Schilt,Thomas Südmeyer,Tobias J. Kippenberg +5 more
TL;DR: This proof-of-principle demonstrates ultra-low noise microwave synthesis via optical frequency division using a transfer oscillator method applied to a microresonator-based comb on the path to future self-referenced integrated sources.
References
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Journal ArticleDOI
Optoelectronic microwave oscillator
X. Steve Yao,Lute Maleki +1 more
TL;DR: In this paper, an optoelectronic microwave oscillator consisting of a pump laser and a feedback circuit including an intensity modulator, an optical fiber delay line, a photodetector, an amplifier, and a filter is described.
Journal Article
Microwave Photonics
Alwyn J. Seeds,K.J. Williams +1 more
TL;DR: The development status of microwave photonic devices is reviewed, their systems applications are described, and some likely areas for future development are suggested.
Journal ArticleDOI
A wideband heterodyne optical phase-locked loop for generation of 3-18 GHz microwave carriers
TL;DR: In this article, a wideband heterodyne second-order optical phase-locked loop with 1.5-mu m semiconductor lasers is presented, which has a bandwidth of 180 MHz, gain of 181 dBHz, and a propagation delay of only 400 ps.
Journal ArticleDOI
Converting light into spectrally pure microwave oscillation.
X. S. Yao,Lute Maleki +1 more
TL;DR: This optoelectronic oscillator can generate ultrastable spectrally pure microwave reference frequencies as high as 75 GHz with a phase noise lower than 2140 dBcyHz at 10 kHz, independent of oscillation frequency.
Journal ArticleDOI
Dual microwave and optical oscillator.
X.S. Yao,Lute Maleki +1 more
TL;DR: In this paper, the authors describe and demonstrate a novel device in which a microwave oscillation and an optical oscillation are generated and directly coupled with each other, which is capable of simultaneously generating stable optical pulses down to the subpicosecond level and spectrally pure microwave signals at frequencies greater than 70 GHz.