Ultracompact reference ultralow expansion glass cavity

Alexandre, Didier; Marechal, Baptiste; Rocher, C.; Rubiola, Enrico; Lecomte, Roméo; Ouisse, Morvan; Delporte, J.; Lacroûte, Clément; Kersalé, Y.

doi:10.1364/ao.57.006470

Cited by 24 publications

(15 citation statements)

References 12 publications

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“…Furthermore, the correlation time for capillary waves on the colloidal liquid-gas surface longer than a few seconds has been reported [37]. By using stable solid such as ultralow expansion glass [38] instead of liquid, the thermal fluctuation discussed above can be suppressed. In this case, a few-second-long correlation times of mechanical noise [39] is possible to allow observation of the splitting at the EP.…”

Section: Discussionmentioning

confidence: 99%

Practical lineshape of a laser operating near an exceptional point

Kim

et al. 2020

Preprint

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We present a practical laser linewidth broadening phenomenon in the viewpoint of high sensitivity of an exceptional point (EP). A stochastic simulation model is implemented to describe the fluctuations in the cavity resonance frequencies. The linewidth originated from external noises are maximized at the EP. The linewidth enhancement factor behaves similarly to the Petermann factor although the Petermann effect is not considered. In the long coherence time limit, the power spectral density of the laser exhibits a splitting in the vicinity of the EP although the cavity eigenfrequencies coalesce at the EP.

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Section: Discussionmentioning

confidence: 99%

Practical lineshape of a laser operating near an exceptional point

Kim

et al. 2020

Preprint

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“…The short-term frequency noise performance of the stabilized laser compares well with other high quality optical sources. As an example, a frequency noise in the range of 1 Hz 2 /Hz at 1 kHz offset has been measured on a WGM resonator stabilized laser [8] or on a compact ULE resonator stabilized laser [7].…”

Section: Stabilized Sourcementioning

confidence: 99%

“…In terms of frequency stability, the best lasers are stabilized on ultra-low expansion (ULE) glass or silicon Fabry-Perot resonators [4][5][6][7]. However, these sources are generally expensive and only deliver a fixed frequency signal.…”

Section: Introductionmentioning

confidence: 99%

“…However, these sources are generally expensive and only deliver a fixed frequency signal. Such resonators can be made compact [7], but the application of this approach to embedded systems has still to be demonstrated. A good compromise between frequency stability and system size can be obtained by using small size resonators such as whispering gallery mode (WGM) resonators [8] or integrated spiral resonators [9].…”

Section: Introductionmentioning

confidence: 99%

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High Spectral Purity Optical Source Stabilized on a Fiber Ring Resonator

Bailly

Llopis

Fernandez

2020

IEEE Photon. Technol. Lett.

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This paper demonstrates the stabilization of an external cavity semiconductor laser at 1550 nm on an ultra-high Q factor fiber ring resonator (FRR). Based on a Pound-Drever-Hall technique, our system is optimized in order to take into account the properties of the FRR which features a large Q factor (210 9) but a relatively small free spectral range (2 MHz). The measured performances of the stabilized laser shows a frequency noise level as low as 0.4 Hz 2 /Hz in the 1 kHz to 10 kHz range and a linewidth lower than 30 Hz for 5 ms integration time.

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“…In this manuscript, we present a digitally controlled Doppler-cancellation setup developed to provide a stabilized fiber output to a compact FP cavity [52] on the laboratory scale. We have put the emphasis on simplicity using off-the-shelf optical components and a compact, digital electronics control loop.…”

Section: Introductionmentioning

confidence: 99%

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

Mukherjee,

Millo,

Marechal

et al. 2021

Preprint

Self Cite

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Progress made in optical references, including ultra-stable Fabry-Perot cavities, optical frequency combs and optical atomic clocks, have driven the need for ultra-stable optical fiber networks. Telecom-wavelength ultra-pure optical signal transport has been demonstrated on distances ranging from the laboratory scale to the continental scale. In this manuscript, we present a Doppler-cancellation setup based on a digital phase-locked loop for ultra-stable optical signal dissemination over fiber. The optical phase stabilization setup is based on a usual heterodyne Michelson-interferometer setup, while the Software Defined Radio (SDR) implementation of the phase-locked loop is based on a compact commercial board embedding a field programmable gate array, analog-to-digital and digital-to-analog converters. Using three different configurations including an undersampling method, we demonstrate a 20 m long fiber link with residual fractional frequency instability as low as 10 −18 at 1000 s, and an optical phase noise of −70 dBc/Hz at 1 Hz with a telecom frequency carrier.

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Ultracompact reference ultralow expansion glass cavity

Cited by 24 publications

References 12 publications

Practical lineshape of a laser operating near an exceptional point

Practical lineshape of a laser operating near an exceptional point

High Spectral Purity Optical Source Stabilized on a Fiber Ring Resonator

Digital Doppler-cancellation servo for ultra-stable optical frequency dissemination over fiber

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