PubCard - Tailoring temperature response for a multimode fiber

(Peer-Reviewed) Tailoring temperature response for a multimode fiber

Han Gao 高涵 ¹ ², Haifeng Hu 胡海峰 ¹ ³ ⁴, Qiwen Zhan 詹其文 ¹ ³ ⁴

¹ School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China
中国上海上海理工大学光电信息与计算机工程学院
² Institute of Modern Optics, Nankai University, Tianjin 300350, China
中国天津南开大学现代光学研究所
³ Zhangjiang Laboratory, 100 Haike Road, Shanghai 201204, China
中国上海张江实验室
⁴ Shanghai Key Lab of Modern Optical System, University of Shanghai for Science and Technology, Shanghai 200093, China
中国上海上海理工大学上海市现代光学系统重点实验室

Opto-Electronic Science, 2024-08-20

https://doi.org/10.29026/oes.2025.240004

https://www.oejournal.org/article/doi/10.29026/oes.2025.240004

Abstract

This work introduces special states for light in multimode fibers featuring strongly enhanced or reduced correlations between output fields in the presence of environmental temperature fluctuations. Using experimentally measured multi-temperature transmission matrix, a set of temperature principal modes that exhibit resilience to disturbances caused by temperature fluctuations can be generated.

Reversing this concept also allows the construction of temperature anti-principal modes, with output profiles more susceptible to temperature influences than the unmodulated wavefront. Despite changes in the length of the multimode fiber within the temperature-fluctuating region, the proposed approach remains capable of robustly controlling the temperature response within the fiber. To illustrate the practicality of the proposed special state, a learning-empowered fiber specklegram temperature sensor based on temperature anti-principal mode sensitization is proposed.

This sensor exhibits outstanding superiority over traditional approaches in terms of resolution and accuracy. These novel states are anticipated to have wide-ranging applications in fiber communication, sensing, imaging, and spectroscopy, and serve as a source of inspiration for the discovery of other novel states.