Polarisation Multiplex Systems TRIZ Cases
- Polarization Dependent Loss Estimation Matrix for Optical Receivers
A digital signal processing receiver constructs an estimation matrix from dual-polarization correlation operations to calculate polarization dependent loss.
- OSNR Measurement via Polarization Nulling in WDM Signals
A tunable optical filter and polarization controller adjust the signal state to measure OSNR across a single spectrum sweep.
- Asymmetric OAM Optical Wireless System for Uplink Capacity
An asymmetric bidirectional optical wireless system uses orbital angular momentum multiplexing to boost uplink data rates.
- Bidirectional Optical Communications Subcarrier Isolation
Digital signal processing generates subcarriers to isolate uplink and downlink channels, reducing cross-talk in single-fiber setups.
- Polarization Independent Optical Device for Fiber Optics
A polarization independent optical device uses microring resonators and polarization splitters to process TE and TM modes uniformly.
- Carrier Phase Recovery in FDM Systems Using Pilot Signals
A signal processing apparatus inserts pilot signals between subcarriers to calculate laser phase noise for accurate carrier phase recovery.
- Optical Transmission Device Nonlinear Pre-equalization
An optical transmission device maps data to signal points and selects symbols with lower perturbation quantities.
- Direct Detection for Polarization Multiplexing Signals
A polarization beam splitter separates multiplexed optical signals into distinct paths for direct detection by photodiodes.
- Optical Signal Nonlinear Compensation via Dispersion-Based Coefficient Setting
A signal processing device determines nonlinear compensation coefficients using measured dispersion amounts to correct polarization multiplexed optical signals.
- Polarization Division Multiplexing Intensity Modulation System
A polarization division multiplexing intensity modulation system uses a single photodetector to receive orthogonal X and Y optical signal components.
- Optical Modulation Unit Timing Adjuster for Polarization Multiplexing
A timing adjuster shifts data streams to align polarized waves in optical modulation units.
- Electrical RZ Signal Phase Control for Optical Interleaving
Phase adjusting circuits shift electrical drive signals to align or interleave RZ transitions, mitigating polarization mode dispersion and signal interference.
- Dual-Polarization Optical Interleaving for PDL and PMD Mitigation
Interleaves data symbols across orthogonal polarization channels to average signal distortions in optical transmission systems.
- Optical Transmission Apparatus Polarization Fluctuation Estimation
A signal processing circuit estimates polarization fluctuations using reflected light beams across multiple wavelengths.
- Polarization Interleaving for Nonlinear Interference Reduction
A polarization interleaving unit distributes orthogonal signals with a Ts/2 delay to reduce nonlinear interference in optical transmission.
- Self-Referenced Modulation Loss Measurement in Coherent Optical Transmitters
Internal photodetectors calculate a contrast ratio to determine modulation loss, eliminating external equipment requirements during normal operation.
- 4D Optical Multiband OFDM for High-Speed Transmission
A 4D optical multiband OFDM system organizes signal constellations to enhance OSNR sensitivity.
- Self-Demultiplexed Optical Transceiver Pilot Tone Segmentation
Pilot tone segmentation enables self-demultiplexed detection, reducing power consumption and circuit size while maintaining spectral efficiency.
- Optical Receiver Polarization Tracking Using Tone Information
An optical receiver determines Stokes parameters from tone information to correct the state of polarization in multiplexed signals.