Abstract
The multiple pulse train interference (MPTI) ranging system takes advantage of the high accuracy and absolute length measurement capability, but traditional scheme has a large measurement dead zone. In this Letter, we propose a MPTI ranging scheme based on chip-based soliton microcomb to achieve high-precision but no dead-zone measurement. The measurement optical path is improved to solve the problem of cross correlation interference fringe overlap, and a peak fitting algorithm is employed to further improve the measurement accuracy of the system. Using a commercial He-Ne interferometer, a 384 nm precision is obtained in 1.5 m distance measurements. Advantages of the simple optical path, high precision, and no measurement dead zone are expected to realize on-chip integration and provide a solution for precision measurement.
| Original language | English |
|---|---|
| Article number | 261106 |
| Journal | Applied Physics Letters |
| Volume | 118 |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - 28 Jun 2021 |
Publisher's Copyright Statement
- COPYRIGHT TERMS OF DEPOSITED FINAL PUBLISHED VERSION FILE: This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Jihui Zheng, Yang Wang, Xinyu Wang, Fumin Zhang, Weiqiang Wang, Xin Ma, Jindong Wang, Jiawei Chen, Linhua Jia, Mingyu Song, Meiyan Yuan, Brent Little, Sai Tek Chu, Dong Cheng, Xinghua Qu, Wei Zhao, and Wenfu Zhang , "Optical ranging system based on multiple pulse train interference using soliton microcomb", Appl. Phys. Lett. 118, 261106 (2021) and may be found at https://doi.org/10.1063/5.0054065.