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Intensive and Efficient Design of a Two-dimensional 8 × 8 Silicon-Based Optical Phased Array Transceiver
Yaoyuan Zhang1,2, Rui Wang1, Haibo Liu1
1Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China.
Sensors (Basel, Switzerland)
|December 9, 2023
Summary
This study presents a novel silicon-based 2D optical phased array transceiver for Light Detection and Ranging (LIDAR). It achieves efficient, large-field-of-view scanning in both transmitting and receiving modes.
Area of Science:
- Photonics
- Optical Engineering
- Integrated Optics
Background:
- Silicon-based optical phased arrays (OPAs) are crucial for Light Detection and Ranging (LIDAR) due to their solid-state beam steering.
- Integrated transceiver schemes offer a path towards low-cost information exchange for small devices.
Purpose of the Study:
- To design and simulate a high-efficiency, large field-of-view two-dimensional optical phased array transceiver.
- To enable seamless switching between transmitting and receiving modes using an optical switch.
Main Methods:
- Utilized low crosstalk waveguide wiring to achieve a dense antenna array with 5.5 μm × 5.5 μm spacing.
- Implemented an optical switch for mode conversion between transmission and reception.
Main Results:
- Achieved a transmitting mode scanning range of 16.3° × 16.3° with overall loss below 10 dB.
- Demonstrated a receiving mode collection efficiency exceeding 27% with antenna array loss below 12.1 dB.
Conclusions:
- The designed 2D optical phased array transceiver offers efficient, wide-angle scanning and high collection efficiency.
- This integrated silicon-based device is suitable for future low-cost LIDAR applications and information exchange.
