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Optical frequency combs generated in normally dispersive Kerr microresonators have been observed to correspond to dark temporal structures, and theoretically explained as interlocked switching waves (also known as domain walls or fronts). The time-domain dynamics that underpin the formation of this type of frequency combs has however so far eluded direct experimental observation. Here we use a closely...
Temporal cavity solitons (CSs) are pulses of light that can persist in an optical cavity without any change to their shape or energy, and in the spectral domain correspond to highly coherent frequency combs. Cavity solitons were recently demonstrated for the first time in crystalline microresonators [1], and have subsequently been reported in a number of other resonator platforms [2-4], further establishing...
We experimentally demonstrate the simultaneous coexistence of two independent nonlinear states in a passive Kerr cavity operated at high power. Our experimental observations are shown to be in excellent agreement with simulation and theory.
We experimentally demonstrate a novel, simple, and efficient, temporal cavity soliton addressing scheme. Based on direct intensity modulation of the cavity driving field, temporal cavity solitons are excited or erased with single electrical addressing pulses.
We resolve in real-time the dynamics of bound states of temporal cavity solitons in a passive driven nonlinear resonator, and identify several new binding mechanisms involving Gordon/Kelly sidebands, birefringence, and dispersive waves.
We report on the experimental observation of temporal cavity soliton destabilization via spatiotemporal chaos in a coherently-driven optical fiber ring resonator. Numerical simulations and theoretical analyses are in good agreement with experimental observations.
We use spectral interferometry to experimentally measure the degree of coherence across the full bandwidth of microresonator-based frequency combs. Our results show distinct coherence characteristics for two different frequency combs, supporting previous theoretical findings.
A novel feed-forward phase noise reduction scheme is introduced to reduce the phase noise of an optical frequency comb. The phase noise of a single comb line is measured using a heterodyne technique, and the inverse of this signal is then applied to the entire comb. The method is capable of simultaneously reducing the phase noise of multiple lines and is limited only by the correlation of phase noise...
We will present our latest experiments with temporal cavity solitons, including writing/erasing, temporal tweezing, merging, annihilation, and spontaneous excitation. We will also highlight their relevance in the context of microresonator Kerr frequency combs.
We report experimental observations of weaklybound states of temporal cavity solitons, with separations of 10 soliton widths and beyond, in a 100-m single mode fiber cavity. Bound state dynamics has been studied using the real time dispersive Fourier transform technique for roundtrip-byroundtrip measurements. Temporal oscillations in the cavity soliton background, associated with the presence of Kelly...
We present a novel feed-forward laser linewidth reduction scheme. The linewidth of a DFB laser is reduced from 9.4MHz to 37.2kHz. Sixteen modes of a mode-locked laser are simultaneously reduced from ∼20MHz to below 300kHz.
We experimentally demonstrate temporal tweezing of picosecond optical pulses, extending the concept of optical tweezers to the time-domain. By adjusting the phase profile of the driving beam, we can trap and manipulate temporal cavity solitons.
We demonstrate time-domain optical soliton tweezers: the trapping and real-time manipulation of a sequence of picosecond optical solitons. By adjusting the phase profile of the driving beam, we induce controlled timedomain motion of temporal cavity solitons.
We report the first experimental observation of dispersive wave emission by temporal cavity solitons. Our results could impact on a variety of systems supporting temporal cavity solitons, such as high-Q Kerr microresonators.
Solitons are ubiquitous in nonlinear optics and are well known to radiate away energy when perturbed. This radiation is commonly called a dispersive wave (DW) because it spreads temporally due to chromatic dispersion [1]. It can also be interpreted as Čerenkov radiation. A classic example is DW emission by Kerr optical fiber solitons in presence of high-order dispersion. This case has important applications...
Solitons are ubiquitous nonlinear waves that manifest themselves across a plethora of physical systems. They are known to interact in a variety of ways, elastically or inelastically. Despite the vast number of systems supporting solitons, the past two decades have shown optics to constitute the platform of choice for the systematic study of their interactions [1]. Soliton interactions can be either...
Temporal cavity solitons (CS) are optical pulses that circulate indefinitely around a coherently-driven nonlinear passive optical cavity [1]. They are genuine solitons in the sense that chromatic dispersion is balanced by nonlinearity. In addition, a continuous-wave (cw) driving beam compensates for the intracavity losses. This double-balancing justifies classifying these objects as dissipative solitons...
We demonstrate error free data transmission at 9.5 Gb/s at 636 nm through a record length of 50 m of microstructured polymer optical fiber. We observe minimal modal dispersion and a power penalty of 1dB.
We demonstrate the transmission of a 9.5Gb/s data signal through a record length of 50m of microstructured polymer optical fiber. The signal suffers from minimal modal dispersion and a power penalty of 1dB.
We demonstrate for the first time 10Gb/s error-free transmission through two differently micro-structured-multimode polymer fibers. Results show excellent transmission characteristics for these fibers and demonstrate that micro-structuring can significantly improve the bandwidth of multimode-polymer fibers.
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