Integrated optical nonlinearities have spawned many new technologies such as optical parametric oscillators and microcombs. Despite remarkable achievements, optical parametric oscillation (OPO) and microcomb generatio...
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ISBN:
(数字)9798350379266
ISBN:
(纸本)9798350379273
Integrated optical nonlinearities have spawned many new technologies such as optical parametric oscillators and microcombs. Despite remarkable achievements, optical parametric oscillation (OPO) and microcomb generation remain challenging for foundry-available silicon photonics. Silicon-photonic platform provides mature CMOS manufacturing process and relatively high nonlinear coefficient. However, the nonlinear absorption at near-infrared telecommunication band hinders the effective nonlinear response on silicon photonics. In addition, the 220 nm thick Si layer is unsuitable for anomalous dispersion waveguides, which is necessary for OPO process. In this work, a concentric microresonator with the PIN doping structure is designed to solve these two problems. Under reverse bias on the designed PIN structure, the generated free carriers are effectively migrated to weaken the free carrier absorption. Local anomalous dispersion is induced by the designed concentric structure. optical parametric oscillation is theoretically analyzed and 10 OPO sidebands are experimentally generated with a single pump. Our design verifies the ability of dispersion engineered nonlinear oscillators in C-band on foundry-available silicon photonic platform.
A non-coaxial Lidar system based on lens-assisted beam-steering technology is demonstrated. A coherent random amplitude modulated continuous wave detection method is applied in the Lidar system to enable the capabilit...
A non-coaxial Lidar system based on lens-assisted beam-steering technology is demonstrated. A coherent random amplitude modulated continuous wave detection method is applied in the Lidar system to enable the capabilities of unambiguous ranging and velocimetry.
We propose a sandwich valley photonic crystal implementing the generation and topological transport of continuous frequency entangled biphotons. These extended valley kink states propagating in the sandwich domain sho...
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ISBN:
(纸本)9781957171258
We propose a sandwich valley photonic crystal implementing the generation and topological transport of continuous frequency entangled biphotons. These extended valley kink states propagating in the sandwich domain show more tolerance for disorders.
SummaryWe further analyze the Doppler effect caused by high-velocity platform motion for the comb-based free-space optical two-way time-frequency transfer technique. A novel synchronization algorithm is proposed to co...
SummaryWe further analyze the Doppler effect caused by high-velocity platform motion for the comb-based free-space optical two-way time-frequency transfer technique. A novel synchronization algorithm is proposed to correct the Doppler-induced error.
We fabricated a photonic crystal nanobeam cavity with dual resonance on erbium-doped thin film lithium niobate by FIB, which supports on-chip photonic crystal laser at 1540 nm when pumped by a 1460 nm laser.
ISBN:
(纸本)9781957171258
We fabricated a photonic crystal nanobeam cavity with dual resonance on erbium-doped thin film lithium niobate by FIB, which supports on-chip photonic crystal laser at 1540 nm when pumped by a 1460 nm laser.
We propose a broadband coupler based on cascaded Mach-Zehnder interferometers with Bezier curves on the silicon nitride platform, which has a wide operation wavelength range of 110 nm and good width/thickness fabricat...
We propose a broadband coupler based on cascaded Mach-Zehnder interferometers with Bezier curves on the silicon nitride platform, which has a wide operation wavelength range of 110 nm and good width/thickness fabrication tolerance.
We demonstrate a low latency fiber channel distortion equalizer that implements mainly of the equalization calculations in the optical domain, based on an integrated photonic reservoir computing chip. We discussed the...
We demonstrate a low latency fiber channel distortion equalizer that implements mainly of the equalization calculations in the optical domain, based on an integrated photonic reservoir computing chip. We discussed the equalization effect of the equalizer under different dispersion noise and optical signal-to-noise ratio (OSNR) conditions. The bit error rate (BER) of the C-band with 25Gb/s on-off key (OOK) distorted signal in 25km standard single-mode fiber (SSMF) has been reduced by 3 orders of magnitude. By optimizing weights, this equalizer can adapt to link impairments. It can effectively equalize the distorted signals at data rates of 10–40 Gb/s over 25km in SSMF transmission. Furthermore, it can efficiently equalize the impaired signals after 5-40km SSMF transmission at a signal rate of 25Gb/s.
The performance of existing resonant fiber-optic gyro (RFOG) is greatly discounted by laser-induced parasitic noises and complexity. By using white-light multi-beam interferometry, this paper unveils the highest-resol...
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We experimentally demonstrate program-controlled single-soliton generation in a Si3N4 micro-resonator assisted by an auxiliary laser. A feedback control method is employed to enhance the stability of the single solito...
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