* FMCW (Frequency Modulation Continuous Wave)  

- Coherent LiDAR has drawn much attention due to its capabilities in detecting target distance, speed, and directional change all together.

* Coherent laser source required to achieve long range and low cost

- High output power to overcome photon loss

- Minimal count of emitters to simplify the LiDAR design

- Enable Si PIC (photonic integrated circuit) integration for size reduction and low-cost production