Designing LIDAR on a Chip
应用文章
Overall Design and Simulation Strategy
To efficiently design a LIDAR-on-chip system, the device is decomposed into functional blocks, each simulated using the most appropriate tool from the RSoft Photonic Device Tools suite:
- Cascaded 1×32 splitter: BeamPROP BPM™
- BPM is ideal for 1×2 splitters due to little backward reflection and suitability for slowly varying structures.
- Thermo-optical phase shifter: BeamPROP BPM + Multiphysics Utility
- BPM handles optical propagation, while the Multiphysics Utility computes temperature dependent refractive index perturbations.
- Emitter (grating antenna array): FullWAVE FDTD™
- FDTD (Finite Difference Time Domain) is required for omnidirectional light propagation and accurate grating coupler modeling.
This modular approach ensures each component is optimized using the most accurate and computationally efficient method available.