Single-frequency single-resonator lasers on erbium-doped lithium niobate on insulator are demonstrated. The 35 GHz microring laser exhibits wavelength switching while the 192 GHz microring laser achieves a maximal out...
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ISBN:
(数字)9781957171050
ISBN:
(纸本)9781665466660
Single-frequency single-resonator lasers on erbium-doped lithium niobate on insulator are demonstrated. The 35 GHz microring laser exhibits wavelength switching while the 192 GHz microring laser achieves a maximal output power of 2.1 μW.
A low-complexity scheme is proposed to realize irregular QAM formats in amplifier-less coherent opticalsystems. The simulation results show 36QAM and 49QAM achieve 2.32 dB and 1.9 dB gains of power budget over 64QAM ...
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ISBN:
(数字)9781957171159
ISBN:
(纸本)9781665475570
A low-complexity scheme is proposed to realize irregular QAM formats in amplifier-less coherent opticalsystems. The simulation results show 36QAM and 49QAM achieve 2.32 dB and 1.9 dB gains of power budget over 64QAM at net bit rates of 650 Gbit/s and 750 Gbit/s, respectively.
Missing data affects stability analysis of Radio Frequency (RF) transfer system. In this paper, a missing data prediction method using Long Short-Term Memory (LSTM) network is proposed for the short-term failure in RF...
Missing data affects stability analysis of Radio Frequency (RF) transfer system. In this paper, a missing data prediction method using Long Short-Term Memory (LSTM) network is proposed for the short-term failure in RF transfer system. The performance is verified by experimenting on the measurement data of 2.4 GHz RF transfer system using 3000 km single optical fiber bi-directionally. The results demonstrate that our proposed method can achieve higher prediction accuracy compared to back propagation neural network (BPNN) and Support Vector Regression (SVR). When the prediction time is 240 s, the Root Mean Squared Error (RMSE) between the predicted value and the actual value is less than 0.001. This provides an effective and feasible method to impute missing data for RF transfer system.
An integrated frequency-modulated continuous-wave Lidar is demonstrated based on lens-assisted beam steering technology at 1550nm. For the first time, the integrated Lidar has achieved a maximum ranging distance up to...
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ISBN:
(数字)9781957171050
ISBN:
(纸本)9781665466660
An integrated frequency-modulated continuous-wave Lidar is demonstrated based on lens-assisted beam steering technology at 1550nm. For the first time, the integrated Lidar has achieved a maximum ranging distance up to 210m.
Tunable photonics devices provide abundant transfer functions benefitting from the additional tunable degrees of freedom. However, modeling the tunable photonics devices generally requires multi-physics interaction si...
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Tunable photonics devices provide abundant transfer functions benefitting from the additional tunable degrees of freedom. However, modeling the tunable photonics devices generally requires multi-physics interaction simulations, which makes it extremely complex and time-consuming. In this paper, we propose a novel method for modeling tunable photonic devices, providing an effective approach to efficiently tune complex photonic devices. The proposed physics-aware models can learn from a small number of spectra measured from fabricated devices. After training processes, the trained models can provide accurate predictions of the unmeasured spectra, directing the tuning strategy.
We experimentally show that noise induced by the distributed modal crosstalk in weakly-coupled FMFs is well approximated by Gaussian distribution. Its impact on weakly-coupled MDM transmission systems is experimentall...
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ISBN:
(纸本)9781957171258
We experimentally show that noise induced by the distributed modal crosstalk in weakly-coupled FMFs is well approximated by Gaussian distribution. Its impact on weakly-coupled MDM transmission systems is experimentally compared with ASE noise.
We demonstrate low-loss single-mode polymer waveguides compatible with the PCB lamination process. In the experiment, fabricated waveguides have an average transmission loss of 0.3 dB/cm at 1310 nm and survived a regu...
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We demonstrate low-loss single-mode polymer waveguides compatible with the PCB lamination process. In the experiment, fabricated waveguides have an average transmission loss of 0.3 dB/cm at 1310 nm and survived a regular PCB lamination process.
We present the high-speed physical-layer secure key generation and distribution in fiber networks. A key generation rate of 2.7 Gb/s is achieved over 10 km single-mode fiber using a specifically-designed bidirectional...
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A solid-state multi-beam scanning single-photon light detection and ranging (Lidar) system based on virtually imaged phased array (VIPA) and single-photon avalanche diode (SPAD) array is proposed. Two cascaded VIPAs a...
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A solid-state multi-beam scanning single-photon light detection and ranging (Lidar) system based on virtually imaged phased array (VIPA) and single-photon avalanche diode (SPAD) array is proposed. Two cascaded VIPAs are used to generate 2D multiple light beams, to sweep in space by tuning laser wavelength. The system utilizes a SPAD array to detect the reflected photons, and realizes ranging based on direct time-of-flight (dToF) principle. In the demonstration experiment, sub-mrad-order angular resolution and centimeter-order ranging accuracy are realized. A target at 8.94 m is imaged with a pixel number of 80×443, which is 7 times that of the SPAD array with the help of multi-beam scanning.
Bosonic loss estimation has an important role in quantum metrology. It was once believed that the ultimate precision of this task is restricted to the standard quantum limit if no quantum probe is involved. Neverthele...
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Bosonic loss estimation has an important role in quantum metrology. It was once believed that the ultimate precision of this task is restricted to the standard quantum limit if no quantum probe is involved. Nevertheless, a recent proposal showed that this limit can be surpassed by utilizing ring resonators with coherent state probe. Here, we experimentally realize the resonator-based bosonic loss estimation and verify the resonant enhancement effect. This Letter explores the advantages of resonator-based metrology and sheds light on the development of high-precision miniature sensors.
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