Complete characterization of quantum-limited timing jitter in passively mode-locked fiber lasers

Cox, James C.; Nejadmalayeri, Amir H.; Kim, Jungwon; Kärtner, Franz X.

doi:10.1364/ol.35.003522

Cited by 45 publications

(32 citation statements)

References 21 publications

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“…Optical techniques for timing jitter measurements, such as the recently introduced balanced optical cross-correlation technique [5], confirmed that passively modelocked lasers show jitter levels of less than 3 fs for standard fiber lasers [11,12] and about 10 as for solid-state lasers due to their shorter pulses, higher intracavity pulse energy and lower intracavity loss [13]. In fact, this latter value is the lowest jitter or phase noise level ever observed in any oscillator.…”

Section: Timing Jitter Of Rf and Photonic Sourcesmentioning

confidence: 88%

Photonic ADC: overcoming the bottleneck of electronic jitter

Khilo¹,

Spector²,

Grein³

et al. 2012

Opt. Express

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426

229

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Accurate conversion of wideband multi-GHz analog signals into the digital domain has long been a target of analog-to-digital converter (ADC) developers, driven by applications in radar systems, software radio, medical imaging, and communication systems. Aperture jitter has been a major bottleneck on the way towards higher speeds and better accuracy. Photonic ADCs, which perform sampling using ultra-stable optical pulse trains generated by mode-locked lasers, have been investigated for many years as a promising approach to overcome the jitter problem and bring ADC performance to new levels. This work demonstrates that the photonic approach can deliver on its promise by digitizing a 41 GHz signal with 7.0 effective bits using a photonic ADC built from discrete components. This accuracy corresponds to a timing jitter of 15 fs -a 4-5 times improvement over the performance of the best electronic ADCs which exist today. On the way towards an integrated photonic ADC, a silicon photonic chip with core photonic components was fabricated and used to digitize a 10 GHz signal with 3.5 effective bits. In these experiments, two wavelength channels were implemented, providing the overall sampling rate of 2.1 GSa/s. To show that photonic ADCs with larger channel counts are possible, a dual 20-channel silicon filter bank has been demonstrated. 289-296 (1992). 11. J. Kim, J. Chen, J. Cox, and F. X. Kärtner, "Attosecond-resolution timing jitter characterization of free-running mode-locked lasers using balanced optical cross-correlation," Opt. Lett. microwave signals at 40-GHz with higher than 7-ENOB resolution," Opt. ©2012 Optical Society of America

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Section: Timing Jitter Of Rf and Photonic Sourcesmentioning

confidence: 88%

Photonic ADC: overcoming the bottleneck of electronic jitter

Khilo¹,

Spector²,

Grein³

et al. 2012

Opt. Express

Self Cite

426

229

View full text Add to dashboard Cite

show abstract

“…The breathing pulse ring cavity design was chosen as this configuration generally produces pulses with higher output energies than a quasi-soliton laser [2] and because it often demonstrates low noise operation [19] which was required for our applications work. Most Yb-fiber modelocked cavities run at the secondary peak of the Yb-fiber emission cross section spectrum near 1030 nm to maximise the gain per unit length and hence minimise the length of active fiber.…”

Section: Experimental Laser Characteristics a Cavity Designmentioning

confidence: 99%

Simulations and experiments showing the origin of multiwavelength mode locking in femtosecond, Yb-fiber lasers

et al. 2016

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A stable and self-starting femtosecond breathing-pulse Yb-fiber oscillator is reported, modelocked using the nonlinear polarisation evolution mechanism. A bifurcation between two distinct modes of operation is demonstrated experimentally, producing pulses with a single central wavelength in one state, or following adjustment of the intra-cavity waveplates, the emission of pulses with three distinct central wavelengths. The maximum bandwidth was 72 nm at the -10 dB level and the pulses were compressible externally to 70 fs with energies of 0.75 nJ. The multi-wavelength pulses reported here are significantly shorter than the pico-second pulses previously observed from similar modelocked multi-wavelength sources. Vector simulations based on the nonlinear Schrödinger equation show that the multi-wavelength behaviour is produced by overdriving the nonlinear polarisation evolution based saturable absorber at the peak of the pulse, leading to transmission of the two wings of the strongly chirped pulse. This new insight shows clearly that the three pulses output in the multi-wavelenght state are coherent. The agreement between simulation and experimental data shows nonlinear polarisation evolution based modelocked fiber lasers are a suitable platform for studying the nonlinear dynamics underlying the bifurcation of the output.

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“…A typical method to characterize this noise conversion is to apply an acousto-optic modulator (AOM) after the optical pulse train to generate a controlled intensity noise and compare with the measured phase noise [1]. Various techniques have been proposed to reduce the phase noise in the mode-locked lasers [5]- [9] and to measure the phase noise precisely [1], [4], [10], [11]. Moreover, it has also been demonstrated that the residual timing jitter of the extracted RF signals can be as low as a few tens of femtosecond with novel designs [12], [13].…”

mentioning

confidence: 99%

Frequency Response of the Noise Conversion From Relative Intensity Noise to Phase Noise in the Photodetection of an Optical Pulse Train

Ouyang

Wong

et al. 2011

IEEE Photon. Technol. Lett.

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The frequency response of the noise conversion from the relative intensity noise (RIN) to the phase noise in the photodetection process of an optical pulse train is characterized with pump modulation method. It is found that the conversion ratio from the RIN to the phase noise is not sensitive to the noise power or the incident optical power, but decreases approximately as with the increase of noise frequency. A new parameter defined as the RF power difference of the noise spurious peaks is proposed and is shown to provide an easy way to estimate the strength of the RIN-to-phase-noise conversion avoiding the need to measure the exact noise spectra of the RIN and the phase noise.Index Terms-Intensity noise, mode-locked laser, phase noise, photodetector and pump modulation.

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Complete characterization of quantum-limited timing jitter in passively mode-locked fiber lasers

Cited by 45 publications

References 21 publications

Photonic ADC: overcoming the bottleneck of electronic jitter

Photonic ADC: overcoming the bottleneck of electronic jitter

Simulations and experiments showing the origin of multiwavelength mode locking in femtosecond, Yb-fiber lasers

Frequency Response of the Noise Conversion From Relative Intensity Noise to Phase Noise in the Photodetection of an Optical Pulse Train

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