Code for ‘Identification of the mode, polarization, wavelength and intensity of light using a one-pixel device on an optical fibre tip’

# Project README
## OverviewThis repository contains MATLAB scripts for processing TDMS measurement data for:1. 4D data decoupling analysis (Figure 3)2. Encryption/decryption for secure transmission (Figure 4)
## Environment Requirements- **Operating System**: Windows 11- **MATLAB Version**: R2023b- **Required Toolboxes**: - Curve Fitting Toolbox - Signal Processing Toolbox - Image Processing Toolbox - Statistics and Machine Learning Toolbox- **Custom Functions**: - `convertTDMS.m` (provided in project)
## Code StructureThe repository is organized into the following key components: ## Content for “Code for 4D Decoupling Process (Figure 3)”- **Location**: `/Original Code/3. Code for for 4D decoupling process/`1. RMSE comparation (Fig. 3b-c).2. Decoupling error and RMSE (Fig. 3d-e).3. Calculated mean differences (Fig. 3g).4. The correlation function (Fig. 3h).5. Multidimensional decoupling (Fig. 3i).
## Content for “Code for Encryption and Decryption (Figure 4)”- **Location**: `/Original Code/4. Code for Encryption and Decryption/`1. The ciphertext loaded on mode and intensity states (Fig. 4c).2. Database establishing process (Fig. 4d).3. Photovoltage responses of six ports (Fig. 4e).4. 4D light parameters recognition results (Fig. 4f).