Low-noise, Flat-spectrum, Polarization-Maintaining All-Fiber Frequency Comb for Wideband Communications

Cai, Yi; Sohanpal, Ronit; Luo, Yuan; Heidt, Alexander M.; Liu, Zhixin

doi:10.1364/ofc.2023.th1b.5

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…Performances in terms of spectral width can be easily improved by replacing the intensity modulators in our scheme by a cascade of intensity and phase modulators 10 . Using this architecture, broadband spectra spanning ten's of terahertz corresponding to ultrashort pulses of a few tens of femtoseconds can be generated in single core fibers 36,37 and could be transposed in tricores architectures. We have reported three combs, but there is no technical limitation to increasing their number, e.g., four combs or more, to open the path for 3D spectroscopy to characterize the complete Hamiltonian of a system 16,38,39 .…”

Section: Tri-comb Measurementsmentioning

confidence: 99%

All-fiber frequency-agile triple-frequency comb light source

Genier,

Bancel,

Santagata

et al. 2022

Nonlinear Frequency Generation and Conversion: Materials and Devices XXI

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Section: Tri-comb Measurementsmentioning

confidence: 99%

All-fiber frequency-agile triple-frequency comb light source

Genier,

Bancel,

Santagata

et al. 2022

Nonlinear Frequency Generation and Conversion: Materials and Devices XXI

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“…Even though the residual sources of phase noise may be low in magnitude, they potentially scale non-linearly such that their contributions in comb-lines far away from the central frequency becomes significant. This is specially important in applications like supercontinuum generation where nonlinear effects are used to broaden the initial comb [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Subspace tracking for phase noise source separation in frequency combs

Zibar,

Razumov,

Heebøll

et al. 2023

Preprint

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It is widely acknowledged that the phase noise of an optical frequency comb primarily stems from the common mode (carrier-envelope) and the repetition rate phase noise. However, owing to technical noise sources or other intricate intra-cavity factors, residual phase noise components, distinct from the common mode and the repetition rate phase noise, may also exist. We introduce a measurement technique that combines subspace tracking and multi-heterodyne coherent detection for the separation of different phase noise sources. This method allows us to break down the overall phase noise sources associated with a specific comb-line into distinct phase noise components associated with the common mode, the repetition rate and the residual phase noise terms. The measurement method allow us, for the first time, to identify and measure residual phase noise sources of a frequency modulated mode-locked laser.

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All-fiber frequency agile triple-frequency comb light source

Bancel,

Genier,

Santagata

et al. 2023

Nat Commun

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Tricomb spectroscopy unveils a new dimension to standard linear and nonlinear spectroscopic analysis, offering the possibility to reveal the almost real-time evolution of complex systems with unprecedented accuracy. Current triple comb configurations are based on the use of mode-locked lasers, which impose constraints on the comb parameters, and require complex electronic synchronization, thus limiting potential applications. In this paper, we present the experimental demonstration of a new type of all-fiber, self-phase-locked, frequency-agile tri-comb light source. It is based on the nonlinear spectral broadening of three electro-optic modulator-based frequency combs in a three-core fiber. The exploitation of spatial multiplexing of light in optical fibers offers new possibilities to generate broadband-frequency combs that are highly coherent with each other. After characterizing the stability of the source and performing several dual-comb test measurements, we revealed the high mutual coherence between the three combs through the demonstration of a 2-D pump-probe four-wave mixing spectroscopy experiment.

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Low-noise, Flat-spectrum, Polarization-Maintaining All-Fiber Frequency Comb for Wideband Communications

Abstract: We design and optimize a parametric frequency comb generator using all polarization- maintaining components, highly-doped PM fiber and PM highly-nonlinear fibers, obtaining 500 tones over 100nm with >-5dBm per tone and less than 40kHz linewidth.

Cited by 4 publications

References 11 publications

All-fiber frequency-agile triple-frequency comb light source

All-fiber frequency-agile triple-frequency comb light source

Subspace tracking for phase noise source separation in frequency combs

All-fiber frequency agile triple-frequency comb light source

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