We propose and experimentally demonstrate a novel optical filter based on a bus waveguide side-coupled to a topological photonic nanobeam cavity. The measured extinction ratio is 15.25 dB, and the intrinsic quality fa...
We propose and experimentally demonstrate a novel optical filter based on a bus waveguide side-coupled to a topological photonic nanobeam cavity. The measured extinction ratio is 15.25 dB, and the intrinsic quality factor is 2914.
We propose a novel quadrature photonic spatial-Euler Ising machine to realize flexible spin-interaction configuration and spin-flip in a single SLM. A 20000-vertex max-cut problem is experimentally solved, showing 80%...
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ISBN:
(纸本)9781957171258
We propose a novel quadrature photonic spatial-Euler Ising machine to realize flexible spin-interaction configuration and spin-flip in a single SLM. A 20000-vertex max-cut problem is experimentally solved, showing 80% improvement compared to simulation results and 49% over heuristic algorithm.
Interferometric fiber optical gyroscopes (IFOGs) have become one of the widely used sensors of inertial technology and rotational seismology, owing to their high precision and stability. In recent years, the dual-pola...
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By using multiple and backward pumped third-order Raman, we experimentally demonstrate an ultra-low-noise amplification over 130 nm bandwidth covering SCL band with lowest -7.1 dB effective noise figure and 13.6-dB av...
By using multiple and backward pumped third-order Raman, we experimentally demonstrate an ultra-low-noise amplification over 130 nm bandwidth covering SCL band with lowest -7.1 dB effective noise figure and 13.6-dB average gain obtained.
Weyl medium has triggered remarkable interest owing to its nontrivial topological edge states in 3D photonic band structures that were mainly revealed as surface modes yet. It is undoubted that the connection of two d...
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Weyl medium has triggered remarkable interest owing to its nontrivial topological edge states in 3D photonic band structures that were mainly revealed as surface modes yet. It is undoubted that the connection of two different Weyl media will give rise to more fruitful physics at their interface, while they face extreme difficulty in high-dimensional lattice matching. Here, we successfully demonstrate the non-Hermitian Weyl interface physics in complex synthetic parameter space, which is implemented in a loss-controlled silicon waveguide array. By establishing non-Hermitian Hamiltonian in the parameter space, new Weyl interfaces with distinct topological origins are predicted and experimentally observed in silicon waveguides. Significantly, our Letter exploits the non-Hermitian parameter to create the synthetic dimension by manipulating the non-Hermitian order, which successfully circumvents the difficulty in lattice matching for high-dimensional interfaces. The revealed rich topological Weyl interface states and their phase transitions in silicon waveguide platform further imply potentials in chip-scale photonics integrations.
We report experimental observations performed using a net anomalous dispersion Er-doped fiber ring laser without polarization-selective elements,highlighting the domain-wall solitary pulses generated under the incoher...
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We report experimental observations performed using a net anomalous dispersion Er-doped fiber ring laser without polarization-selective elements,highlighting the domain-wall solitary pulses generated under the incoherent polarization *** adjusting the pump power and the polarization state appropriately,bright and dark solitons can stably co-exist in the cavity,both centered at 1562.16 nm with a 3-dB spectral width of -0.15 nm and a repetition rate of 3.83 ***,the 0.8 mm long thulium-doped fiber(TDF)facilitated the mode-locking and self-starting of the *** is the first demonstration of a laser being used to generate bright and dark solitons synchronously while using TDF as the saturable absorber(SA).Except possessing the all-fiber structure,the laser exhibits good stability,which may have a significant influence on improvement of the pulse-laser design,and may broaden practical applications in optical sensing,opticalcommunication,and soliton multiplexed systems.
Differential-driven thin-film lithium niobate microring modulator is demonstrated. Two segments of electrode are employed to provide reversed electric field. The fabricated device features a tunability of 1.67 pm/V, s...
Differential-driven thin-film lithium niobate microring modulator is demonstrated. Two segments of electrode are employed to provide reversed electric field. The fabricated device features a tunability of 1.67 pm/V, supporting data rates up to 20 Gb/s.
A photonic crystal nanobeam cavity(M-PCNC)with a structure incorporating a mixture of diamond-shaped and circular air holes is *** performance of the cavity is simulated and studied *** thefinite-difference time-domain...
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A photonic crystal nanobeam cavity(M-PCNC)with a structure incorporating a mixture of diamond-shaped and circular air holes is *** performance of the cavity is simulated and studied *** thefinite-difference time-domain method,the parameters of the M-PCNC,including cavity thickness and width,lattice constant,and radii and numbers of holes,are optimized,with the quality factor Q and mode volume Vm as performance *** modulation of the lattice constant and hole radius enable the proposed M-PCNC to realize outstanding *** optimized cavity possesses a high quality factor Q 1.45105 and an ultra-small mode=×volume Vm 0.01(λ/n)[Zeng et al.,Opt Lett 2023:48;3981–3984]in the telecommunications wavelength *** can be progres-=sively squeezed in both the propagation direction and the perpendicular in-plane direction by a series of interlocked anti-slots and slots in the diamond-shaped hole ***,the energy can be confined within a small mode volume to achieve an ultra-high Q/Vm ratio.
Secure precision time synchronization is important for applications of Cyber-Physical systems. However, several attacks, especially the Time Delay Attack (TDA), deteriorates the performance of time synchronization sys...
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