Year: 2025
Type: article
Abstract: The wavelength and state of polarization (SOP) are fundamental properties of an optical field which are essential for applications in optical communications, imaging and other fields. However, it is challenging for existing spectrometers and polarimeters to measure these parameters simultaneously, resulting in reduced spatial and temporal efficiency. To overcome this limitation, we propose and demonstrate a compact multimode fiber (MMF)-based high-dimensional light analyzer capable of simultaneously performing high-precision measurements of both wavelength and SOP. Core-offset splicing is introduced in the MMF to reshuffle the mode coupling. A neural network named WP-Net has been designed dedicated to wavelength and SOP synchronization measurements. Physics-informed loss function based on optical prior knowledge is used to optimize the learning process. These advancements have enhanced the sensitivity, achieving a wavelength accuracy of 0.045 pm and an SOP accuracy of 0.0088.
Source: Journal of Lightwave Technology
Authors: Yuxuan Xiong, Hao Wu, Mingming Zhang, Yucheng Yao, Ming Tang
Language: English
Topic: Optical Network Technologies
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4411359037