Related Experiment Video
Updated: Aug 10, 2025
05:57
Characterization of SiN Integrated Optical Phased Arrays on a Wafer-Scale Test Station
Published on: April 1, 2020
8.1K
Photonic integrated circuit with multiple waveguide layers for broadband high-efficient 3D OPA.
Optics Letters
|February 15, 2023
Summary
This study introduces a novel multi-waveguide-layer photonic integrated circuit (PIC) for 3D optical phased arrays (OPAs). This innovative design enhances lidar detection range and efficiency using silicon nitride/silicon dioxide stacks.
Area of Science:
- Photonics
- Integrated Optics
- Materials Science
Background:
- Traditional photonic integrated circuits (PICs) are limited to single-waveguide layers due to CMOS fabrication constraints.
- This limitation restricts the complexity and functionality of PIC-based devices.
Purpose of the Study:
- To explore and demonstrate a multi-waveguide-layer PIC.
- To propose and fabricate a 3D optical phased array (OPA) device with enhanced capabilities.
Main Methods:
- Development of a novel multi-layer Si3N4/SiO2 stack for PIC fabrication.
- Numerical simulations to analyze device performance.
- Fabrication and testing of proof-of-concept multi-waveguide-layer OPA devices.
Main Results:
- Successful demonstration of a multi-waveguide-layer PIC configuration.
- The proposed OPA device utilizes edge couplers for broadband, high-efficiency light coupling.
- The unique multi-layer structure shows potential for extended detection range in lidar applications.
Conclusions:
- Multi-waveguide-layer PICs offer a new paradigm beyond traditional single-layer designs.
- The demonstrated 3D OPA device paves the way for advanced photonic integrated systems.
- This technology holds promise for improved lidar systems and other optical applications.
