Fibre Transmission TRIZ Cases
- Optical Fiber Switching With Side-Polished Couplers
Cutting and fusion splicing can stop communication; side-polished fibers form an optical coupler for continuous switching.
- Per-Span Fiber Diagnostics Using Coherent Optical Supervisory Channels
A coherent receiver extracts phase variation and attenuation for per-span fiber sensing, improving fault localization without sacrificing channel bandwidth.
- Shared-Laser Optical Transceiver for Low-Noise Coherent Reception
A shared laser supplies both local-oscillator and signal light, reducing phase noise and component cost in coherent reception.
- Same-Wavelength Optical Transmitter With Power-Level Multiplexing
Multiple light sources share one wavelength at different power levels, while photon-count models separate streams to increase optical-link bandwidth.
- vBNG Gateway Access with SLA-Based UP Device Selection
This case routes terminals to designated vBNG UP devices by SLA level instead of random load-based access, enabling differentiated service.
- Signal Processing With Cross-Correlation Peak Shaping for Time Alignment
Low cross-correlation peaks can undermine synchronization; peak shaping makes pilot-signal time alignment more reliable across coupled received signals.
- Optical Transceiver Parameter Negotiation for Adaptive Link Settings
Optical nodes exchange Ethernet negotiation messages to match FEC, modulation, power, and link settings for reliable, efficient communication.
- Slope Gain Equalizer With Dual-Core Bidirectional Filtering
A dual-core fiber collimator and interference filter correct slope gain in either direction, reducing equalizer stock and optical-system build time.