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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.
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 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.
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.
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.
Bright and dark pulses were observed respectively at the through and drop ports of a normal-dispersion microresonator, illustrating the impact of a superimposed pump on the time-domain waveform of the output microcomb.
We propose and demonstrate a new method for temporal characterization of entangled photons based on electro-optic modulation and time shifting. Our technique reduces the resolution limits induced by the large timing jitters in single-photon detectors.
Optical frequency comb generation due to interplay between second-order and third-order nonlinearities is demonstrated in a silicon nitride microring resonator which shows normal group velocity dispersion for the fundamental wave. Mode-locked bright and dark pulses are generated at the through and drop ports respectively.
We demonstrate a rapidly frequency-tunable radio frequency (RF) filter using microwave photonics technology for ultrawideband RF spread spectrum applications. A pair of electro-optic frequency combs is arranged as a dispersive tapped delay line in a differential detection configuration to implement a programmable finite impulse response RF filter. Our photonic scheme enables both fast frequency tuning...
We demonstrate a temporal cloak with the capability to simultaneously hide and transmit optical data, as well as prevent corruption by an interfering event. Our results significantly expand the potential of time cloaking in telecommunications.
We experimentally realize phase shift keying of ultrabroadband radio-frequency arbitrary waveforms. BPSK, QPSK and 16-PSK modulation are demonstrated for 50-GHz-bandwidth spread spectrum RF waveforms.
We investigate enhanced coupling of the pump laser as a result of power transfer to the frequency comb in a silicon nitride microring designed with an over-coupled bus-waveguide.
We describe and demonstrate a novel approach for controlling the temporal position of the biphoton correlation by pump frequency tuning. Our method relies on precise waveguide engineering as well as the nonlocal dispersion cancellation effect.
SiN micro-resonators with a cross section of 3×0.6 μm2 and an FSR of 25 GHz were demonstrated with intrinsic Qs up to 17 million, showing frequency comb onset power as low as 5.6 mW.
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