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- 摘要
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- 实验方案
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Hybrid-Cavity Semiconductor Lasers for Single Mode Operation And Optical Signal Processing
摘要： Hybrid-cavity of a Fabry-Pérot (FP) cavity and a microcavity with the microcavity as a wavelength selective reflector are reported for realizing single mode semiconductor lasers. Mode coupling between a microcavity mode and a FP mode results in mode Q factor enhancement and stable single mode operation. Furthermore, optical bistability are realized in the hybrid lasers as the unbiased microcavity working as a saturable absorption. Two bistability regions are realized for the hybrid lasers around threshold current and above threshold with mode competition, and all-optical flip-flop is demonstrated.
关键词： Optical Bistability,Optical Microcavity,Semiconductor Lasers,Coupled Mode
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Single Bandpass Microwave Photonic Filter based on Gain-switched Distributed-feedback Laser
摘要： In this paper, a single bandpass microwave photonic filter (MPF) based on a gain-switched distributed feedback (DFB) laser is proposed and experimentally demonstrated. Self-phase modulation (SPM) effect is explored the performance of the proposed MPF. A single passband is achieved for the proposed MPF, which can be tuned from 1 GHz to 39 GHz. A theoretical model describing the principle of the proposed MPF is derived, which is confirmed by experimental results.
关键词： Tunable filter,Microwave photonics,Semiconductor lasers
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Photonic Technology Improvements that Drives Future of LiDAR Applications
摘要： LiDAR is discussed based on principles of the direct time of flight (TOF) for automotive applications. 1D and 2D type Photon Counting photodetectors with ASIC were introduced as the future oriented long distance detection.
关键词： Semiconductor lasers,Photodetectors,Photonics-Electronics integration
更新于2025-09-16 10:30:52
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Precise Photon Correlation Measurement of a Chaotic Laser
摘要： The second order photon correlation g(2)(τ) of a chaotic optical-feedback semiconductor laser is precisely measured using a Hanbury Brown–Twiss interferometer. The accurate g(2)(τ) with non-zero delay time is obtained experimentally from the photon pair time interval distribution through a ninth-order self-convolution correction. The experimental results agree well with the theoretical analysis. The relative error of g(2)(τ) is no more than 5‰ within 50 ns delay time. The bunching effect and coherence time of the chaotic laser are measured via the precise photon correlation technique. This technique provides a new tool to improve the accuracy of g(2)(τ) measurement and boost applications of quantum statistics and correlation.
关键词： optical feedback,chaos,quantum optics,photon correlation,photon statistics,semiconductor lasers
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Mode Crosstalk Improvement of Active-MMI Mode Selective Laser Diode using Slit Structure
摘要： Slit structure is proposed to achieve stable 1st order mode emission for mode selective LD. As a result, 3.6dB improvement in mode XT is confirmed in the actually implemented device, compared to those without slit one.
关键词： Novel Materials and Structures,Advanced Active Devices,Semiconductor lasers
更新于2025-09-16 10:30:52
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Optimization of Subband Electron Temperature Effect on a Quantum Cascade Laser Characteristics
摘要： The electron temperature of each subband is the key to understanding the QCL characteristics. We show herein a method based on the particle swarm optimization algorithm to obtain the electron temperature of QCLs.
关键词： Optical processing,Infrared,Semiconductor lasers, quantum cascade
更新于2025-09-16 10:30:52
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[IEEE 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Munich, Germany (2019.6.23-2019.6.27)] 2019 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC) - Optical Frequency Comb Generation from Semiconductor Lasers using Optical Injection and Pulsed Gain Switching
摘要： An Optical Frequency Comb (OFC) Generator is a laser source emitting a coherent radiation with an equally spaced group of optical frequencies. OFCs have been used in numerous fields, such as optical communications, RF photonics and infrared spectroscopy. Relatively low repetition rate OFCs (100-1000 MHz) are especially suited for dual comb spectroscopic applications. Low repetition rate OFCs from Gain-Switched (GS) semiconductor lasers using sinusoidal excitation have been reported for spectroscopic applications. On the other hand, the generation of ultra-short optical pulses by pulsed excitation GS has been demonstrated, but as far as we know, it has not been used for OFC generation. In this work, we consider pulsed GS in combination with optical injection (OI) to generate low repetition rate OFCs, and we demonstrate a high performance in terms of noise, flatness and bandwidth. The OFC generator is based on a master-slave configuration. The Slave Laser (SL), a Discrete Mode Laser (DML), is driven in GS operation using a combination of two signals: a bias current and a square signal provided by a pulse pattern generator, with different duty cycles and driving conditions. High-resolution spectra were analyzed with a Brillouin Optical Spectrum Analyzer (BOSA).
关键词： Optical Frequency Comb,Pulsed Gain Switching,Semiconductor Lasers,Dual Comb Spectroscopy,Optical Injection
更新于2025-09-16 10:30:52
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Wavelength and pump-power dependent nonlinear refraction and absorption in a semiconductor disk laser
摘要： We characterize both nonlinear refraction and absorption in a vertical-external-cavity surface-emitting laser (VECSEL) as a function of pump irradiance over the whole range of lasing wavelengths. We observe an approximately linear decrease in magnitude for both nonlinear refraction and nonlinear absorption with optical pumping when the thermally induced shift of the lasing wavelength is considered. Our results are of particular significance for understanding self-modelocking of VECSELs which might be driven by nonlinear lensing.
关键词： mode-locked semiconductor lasers,Z-scan,Nonlinear refractive index,VECSELs
更新于2025-09-16 10:30:52
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Monolithically integrated widely tunable laser on an InP membrane circuits
摘要： We present an integrated Vernier laser with two-ring filter in the cavity. Tuning of the rings shows 21 nm range. Laser has 39 mA threshold current, SMSR better than 35.7 dB and 1.3 mW power.
关键词： Semiconductor lasers,Photonics-Electronics integration
更新于2025-09-16 10:30:52
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High coherence collapse of a hybrid III-V/Si semiconductor laser with a large quality factor
摘要： The high-speed dynamics of a hybrid distributed feedback semiconductor laser heterogeneously integrated onto silicon is experimentally investigated in the presence of external optical feedback. The laser fabrication relies on a proper modal engineering in which light is generated in the III-V material and stored in the low-loss silicon region in order to substantially enhance the quality factor of the cavity resonator. In this work, the hybrid laser is found to be insensitive to parasitic re?ections leading to a 10 Gbps ?oor-free transmission with a power penalty no greater than 1.5 dB at room temperature. As a conclusion, owing to the large quality factor, a high coherence collapse level is unveiled in such laser indicating its vast potential to serve as an alternative solution for the development of isolator-free applications in future photonics integrated circuits. A qualitative interpretation is also provided by linking the standard feedback equations to the quality factor of the resonator.
关键词： optical feedback,Semiconductor lasers,photonics integrated circuits.
更新于2025-09-16 10:30:52