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Free Space Wavelength-Division-Multiplexing Passive Optical Network(WDMPON) External Cavity Laser(ECL) Output Power Semiconductor Optical Amplifiers(SOAs) Single-Photon Source Polymer-Based Tunable Lasers Quantum Bit Error Rate(QBER) Reference Frame Tracking System Optical Networks Planar Lightwave Circuit(PLC) Distribution System 5 Nm Beam Tracking Quantum Dot Laser(QDL) Modulation Bandwidth Silicon Carbide(3C-SiC) Quantum Communication Reflective Semiconductor Optical Amplifier(RSOA) Eye Diagram High Speed Quantum Information Stand-Alone Direct Modulation Low-Cost Lasing Characteristics Polarization Extinction Ratio Inp-Based Ring Resonator Side Channel Dfb Laser Polarization Beam Splitter(PBS) Silicon-Based Standard Single-Mode Fiber 100 Mhz Optical Source Loading Effect C-Band 1550 Nm Cavity Length Filtering Technique Key Components Polarization-Dependent Gain(PDG) Signal Modulation 40 Gb/S Test-Bed Research Trends Alignment Tolerance Fabrication Process Fabry-Perot Cavity Monolithic Integration Secure Communication Selective Area Growth Continuous Wave(CW) Optical Access Networks Thermoelectric Cooler Active Layer Optical Gain Random Bit Generation Superluminescent Diodes(SLDs) 16 Nm Polarization State Fast Steering Mirror Stable Operation Directly Modulated Monolithically Integrated Micro-Optics Room Temperature Semiconductor Lasers Different Wavelengths Quantum Dot (Qd) Shape-Engineered 780 Nm Amplified Spontaneous Emission Error-Free Transmission 10 Ghz Quantum States Self-Assembled Nonreturn-To-Zero(NRZ) Real-Time Tuning Range Information Technology L-Band Channel Integration Intensity Fluctuation Waveguide Grating Variable Optical Attenuators(VOAs) Spectral Range High Performance Unambiguous State Discrimination Optical Power Operation Region Polarization Dependent Loss Receiver Sensitivity Semiconductor Quantum Dots Deep-Ridge Waveguide III-V Optical Communications Photonic Circuit Growth Method Insertion Loss Essential Element 3-Db Bandwidth Front Side Attack Strategy Fiber-Based Inas Qds Gain Medium Applied Physics Bragg Grating Slope Efficiency Dispersion Management Intensity-Noise Suppression Non-Ideal Quantum Gate Wave Mode Four Wave Mixing(FWM) Inas Quantum Dots Optical Transceiver Module Kalman Filter Linewidth Enhancement Factor(LEF) Spot Size Converter(SSC) Asymmetric Waveguide Bb84 Protocol Heterogeneous Integration Ion Trap Operating Condition Projective Measurements Widely Tunable Phase Separation 20 Nm Back Scattering Constant Velocity Transmitter Optical Sub-Assembly Wavelength Range Fiber To The Home(FTTH) Laser Transmitter Public Key Cryptography Tunable Waveguide Integrated Components Polymer Waveguide 5 Ghz Silica-Based Well-Defined Quantum Devices Optical Packaging Single Qd Tracking Error Enhanced Performance Operating Mode Coarse Tracking Dispersion Power Penalty Driving Conditions Operating Temperature Hole-Burning Monitoring Module Optical Mems Quantum Entanglement Semiconductor Laser Diodes(LDs) Design And Fabrication Entangled Photon Sources Polarization Splitting 40 Nm Ber Performance Based System Electron Wave Hybrid Integration Light Injection Quantum Sensor Communication Technologies Computing Applications Multimode Fiber Pre-Amplifier Quantum Technology Quantum Computer Active Compensation Packaging Technology System Integrated Atmospheric Turbulence Error Correction Power Monitoring Photon Number Beam Combiner Neutral Atoms As 4 System Performance Array Signal Processing Current Condition Short Distance Side Mode Suppression Ratio(SMSR) Wide Range Reduction Method Space Link Distribution Test Quantum Computation Passive Optical Network (Pon) Silicon Photonics Custom-Made Constant Distance Mode Matching(MM) Visible And Near-Infrared Squeezed State Entangled State Incoherent Light State-Of-The-Art Total Power Consumption Operating Speed Module Characteristics Material System Operating Wavelength Communication Security Integrated Optical Circuits Size Distribution Mach-Zehnder Interferometer(MZI) Technical Challenges Single Photon Detector Background Noise Challenging Issues Itu Grid Quantum Sensing Wavelength Stability Integrated Waveguide Noise Filtering Photon Pairs Random Number Generators(RNGs) Stranski-Krastanov Butt-Coupling Grating Structure Lasing Emission Tunable Filters(TFs) Single Photon Emitters Single Emitter Wavelength Locking Wave Function Carrier Lifetime Low Power Consumption Modulated Signal Optical Components Coherent Optical Communication Stability And Accuracy Spatial Hole Temporal Filtering Wavelength-Division Multiplexing (Wdm) Crosstalk Analysis High Coupling Efficiency High Gain Optical Misalignment Carrier Wave Wavelength Locker Simple Design 30 Ghz Two-Dimensional Materials Waveguide Structure Unconditional Security Compact Size Optical Beam On-Chip Traveling-Wave Electroabsorption Modulator(TWEAM) Wavelength Tuning Cleaved Facets Threshold Level Blue-Shifted Ratio Optimization Signal Monitoring Tapered Waveguide Case Temperature Device Parameters Decision Threshold Optical Receiver Telecommunication Wavelength Performance Optimization Short Wavelength Wavelength Monitoring Active And Passive Distribution Free Flip-Chip(FC) Quantitative Effects Small Signal Gain Telecom Wavelength Dbr Mirrors Injection Current Optical Path Frequency Response Curve Field-Programmable Gate Array(FPGA) Moving Platforms Next-Generation Performance Degradation Dc Bias Current Input Power Power Variation Quantum Key Distribution Protocol 18 Ghz Thermo-Optics Effect Experimental Comparison Fiber-Coupled Performance Enhancement Photonic Devices Sma Connector Waveguide Photodiodes(WGPD) Travelling Wave Design And Implementation Distributed Feedback Driving Current Electrical Crosstalk Infrared Wavelength Quantum Random Number Generator Gigabit Transceiver Laser Wavelength Optical Alignment Performance Improvement Quantum Light Sources Computational Complexity Electronic Equalization Position Detectors Site-Controlled Qds Color Center Gate Operation Received Power Random Position Filtering Effect Limited Space Phase Control Transmitter And Receiver Broader Bandwidth Gain Characteristics Laser Module Mode Hopping Overlap Integral Quantum Simulation Strain Field Secret Key Security Performance Current Blocking Layer Compensation Method Countermeasure Strategy Generation Mechanism Integrated Device Mass Production Nonlinear Gain TO-CAN Signal Power Ratio High Power Fiber Coupling Mechanical Shock Parametric Down-Conversion Ridge Width Threshold Current Density Anti-Reflection Attack Model Frequency Response Characteristics Ratio Value Wavelength Tunable Broad-Area Laser Cross-Coupling Front-End High Stability In-Phase Integrated Laser Mems-Based 100 Gb/S Transfer Technique Compact Polarization Active Polarization Capacitively Loaded Dichroic Mirrors High Responsivity Multi-Polarization Photon Pulses Quantum Computing(QC) Sampled-Grating Distributed Bragg Reflector Laser Packaging Structure Crosstalk Reduction Inverted Pyramid Solid State