Electromagnetic Transmitters TRIZ Cases
- Coherent Transceiver Using Dual-Wavelength Laser and Waveguide Diplexer
A single laser generates separate transmit and local-oscillator wavelengths, cutting coherent module size, power, and circulator complexity.
- Coherent Receiver LO Wavelength Alignment for Uncalibrated Lasers
Electrical power feedback tunes an uncalibrated local oscillator laser to align with downstream signals in low-cost coherent PON receivers.
- Optical Module Link Training With In-Band and Out-of-Band Setup
Multi-stage link training uses out-of-band control and preset transmitter settings to improve optical link integrity without exhaustive testing.
- Bidirectional Optical Transceiver With O-Band Wavelength Multiplexing
Using O-band wavelength multiplexing in a zigzag filter block, this case raises single-fiber capacity while limiting chromatic dispersion penalties.
- Digital Signal Generation Circuit for Dynamic DAC Symbol Allocation
Histogram-based DAC allocation adapts to symbol probability changes to maintain optical transmitter signal quality and prevent clipping.
- Wearable EO-PPG Sensing for Higher Detection Accuracy
EO phase sensing and PPG share one optical path to improve wearable physiological detection accuracy with lower circuit complexity.
- Folded Optical Modulator Layout to Prevent Field Cancellation
Separate electro-optic chips align fields with crystal axes in folded waveguides, preserving modulation efficiency without enlarging the modulator.
- Wavelength-Tunable Optical Transmitter for Control Signal Superimposition
Wavelength tuning superimposes a low-speed control signal without changing main-signal intensity, improving SNR and receiver sensitivity.