The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We show soliton-self-frequency-shift (SSFS) in a SiN microresonator dominates the change of soliton repetition rate relative to thermal effects. The SSFS-induced repetition rate change with detuning is not directly dependent on the dispersion.
Photonic-assisted radio-frequency arbitrary waveform generation via pulse shaping and frequency-to-time mapping is demonstrated with a time-bandwidth product of 250 (34 ns × 7.3 GHz). It is applied to multipath wireless channel sounding and subsequent precompensation.
We demonstrate a novel two-photon interference experiment for three coherent pumplines generating Biphoton Frequency Combs (BFC) in a silicon nitride microring resonator.
We demonstrate a 50 GHz, low noise Kerr comb with 34% conversion of the pump light into the comb based on a normal dispersion, silicon nitride microring resonator.
We present a novel approach to demonstrate coherence between different bins of a frequency-bin entangled photon-pair. The observed interference patterns provide a simple way to verify frequency-bin entanglement using slow single-photon detectors.
We investigate soliton generation dynamics with the influence of thermal effects. Either soliton annihilation or survival can occur in different trials with the same tuning method, and a spontaneous route to soliton formation is observed.
For the first time, we present a verification of frequency-bin entanglement and phase coherence of an on-chip biphoton frequency comb through a novel two-photon interference measurement scheme and the estimation of the density matrix.
We propose a photonic microwave beamforming scheme based on spectral shaping of a microresonator frequency comb (microcomb) with programmable dispersive time delays. The scheme can potentially support large-scale phased arrays by exploiting the large bandwidth of microcombs.
Silicon nitride microresonators provide a potentially CMOS-compatible platform for optical frequency comb generation [1]. As in any high-Q microcavity, thermal effects strongly affect the dynamics. This is particularly true considering that typical continuous wave pump powers for microresonator comb generation operate in the 20–35 dBm range. Temporal bright solitons for instance are generated when...
Methods allowing transformation of mode-locked laser pulses into nearly arbitrarily shaped, user defined waveforms were introduced more than two decades ago. Commonly termed pulse shaping1, 2, these methods rely on spectral dispersion to spatially separate — and subsequently recombine — the frequency components making up a broadband input pulse. While separated, the phase and amplitude (and sometimes...
We report on microcombs that achieve ∼30% conversion efficiency (∼200 mW on-chip comb power excluding the pump), with 40 lines between 1513 nm–1586 nm with an average 7 dBm per comb line.
Using delayed self-heterodyne coherent detection, we characterized the FM noise across the C-band of a widely spaced microresonator-based frequency comb. The resulting linewidth depends on both the pump laser and the comb line position.
Microresonator‐based Kerr frequency comb (microcomb) generation can potentially revolutionize a variety of applications ranging from telecommunications to optical frequency synthesis. However, phase‐locked microcombs have generally had low conversion efficiency limited to a few percent. Here we report experimental results that achieve conversion efficiency ( on‐chip comb power excluding...
We use a drop-port geometry to characterize the intracavity waveform of an on-chip microcavity soliton. In contrast to the through-port output, the intracavity field shows efficient power transfer from the pump into the comb.
We demonstrated transmission of polarization-multiplexed quadrature phase-shift keying data over 6000 km using a low-noise silicon nitride microresonator frequency comb as light source. These results show the technology's suitability for long-haul fiber communications.
Carrier-envelope offset frequency tuning of a microcomb over 25 GHz is demonstrated based on the thermo-optic effect (362.07 ± 4.16 MHz/°C). Thermal response time constants of 30.9 μs and 0.71 ms are observed.
In this contribution we present a 32 channel InP Arrayed Waveguide Grating Pulse Shaper exhibiting line-by-line amplitude control at 25 GHz channel spacing and demonstrate rapid reconfiguration.
We report the fabrication and characterization of SiN resonators with intrinsic Qs up to 17 million verified with cavity ring-down measurement. Frequency comb generation threshold down to 2.36 mW is consistent with theoretical estimation.
Nonlinear wave mixing in optical microresonators offers a route to chip-level optical frequency combs. The properties of the combs generated depend crucially on the interaction between nonlinearity and dispersion. This tutorial will discuss comb generation in both anomalous and normal dispersion microresonators, with an emphasis on recent advances in the normal dispersion regime.
A novel method of measuring the hot-cavity detuning with a high precision is proposed. Characterization of a mode-locked comb related to dark cavity pulse formation in the effective blue detuning region is demonstrated.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.