Scalable low-latency optical phase sensor array
Abstract
Optical phase measurement is critical for many applications, and traditional approaches often suffer from mechanical instability, temporal latency, and computational complexity. In this paper, we describe compact phase sensor arrays based on integrated photonics, which enable accurate and scalable reference-free phase sensing in a few measurement steps. This is achieved by connecting multiple two-port phase sensors into a graph to measure relative phases between neighboring and distant spatial locations. We propose an efficient post-processing algorithm, as well as circuit design rules to reduce random and biased error accumulations. We demonstrate the effectiveness of our system in both simulations and experiments with photonics integrated circuits. The proposed system measures the optical phase directly without the need for external references or spatial light modulators, thus providing significant benefits for applications including microscope imaging and optical phased arrays.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Aug 29, 2023
- Source ID
- 10.1364/optica.494612
Entities
People
- Andrea Melloni
- Carson Valdez
- David A. B. Miller
- Francesco Morichetti
- Maziyar Milanizadeh
- Olav Solgaard
- Sunil Pai
- Zhanghao Sun
Organizations
- Air Force Office of Scientific Research
- Polytechnic University of Milan
- Stanford University