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metadata
language:
  - en
size_categories:
  - 50K<n<100K
license: mit
task_categories:
  - tabular-regression
tags:
  - photonics
  - optical-dispersion
  - waveguide
  - optical
  - dataset
  - synthetic
  - broadband
dataset_info:
  features:
    - name: wavelength_min
      dtype: float
    - name: wavelength_max
      dtype: float
    - name: group_index_min
      dtype: float
    - name: group_index_max
      dtype: float
    - name: chromatic_dispersion
      dtype: float
    - name: mode_group_delay_min
      dtype: float
    - name: mode_group_delay_max
      dtype: float
    - name: effective_index_at_min
      dtype: float
    - name: effective_index_at_max
      dtype: float
    - name: effective_index_change
      dtype: float
    - name: waveguide_material
      dtype: string
    - name: cladding_material
      dtype: string
    - name: propagation_loss_min
      dtype: float
    - name: propagation_loss_max
      dtype: float
    - name: measurement_method
      dtype: string
    - name: measurement_uncertainty
      dtype: float
    - name: temperature
      dtype: float
    - name: signal_bandwidth
      dtype: float
    - name: device_length
      dtype: float
    - name: material_dispersion
      dtype: float
    - name: waveguide_dispersion
      dtype: float
dataset_size: 100000
dataset_version: 1.1.0

# Frequency Dispersion Dataset 📡

> **Description**  
> This dataset provides **100,000 synthetic rows** to model **frequency dispersion** in photonic waveguides. It includes essential parameters such as **group index**, **chromatic dispersion**, and **mode group delay** across varying wavelength ranges, enabling simulation and optimization of waveguide designs for optical chips.

## Key Highlights ✨
- **Focus**: Frequency-dependent behavior of waveguides, specifically for **optical chips**.  
- **Columns**: 21 structured columns capturing wavelength ranges, material properties, dispersion metrics, and loss measurements.  
- **Size**: 100,000 rows, suitable for training machine learning models, validating designs, and simulating performance.  
- **Use Cases**:  
  - **Modeling dispersion effects** in optical communication systems.  
  - **Broadband photonic device design** for minimal dispersion.  
  - **Waveguide optimization** for real-world environmental conditions.  

## Dataset Structure 🏗️
Each row corresponds to a **single configuration or simulation result** for a waveguide, including:

1. **Wavelength Range**  
   - `wavelength_min` (nm): Minimum operating wavelength.  
   - `wavelength_max` (nm): Maximum operating wavelength.

2. **Dispersion Metrics**  
   - `group_index_min` and `group_index_max`: Group index values at the wavelength limits.  
   - `chromatic_dispersion` (ps/nm·km): Quantifies dispersion over the wavelength range.  
   - `mode_group_delay_min` and `mode_group_delay_max` (ps/m): Signal delay per meter.  
   - `material_dispersion` and `waveguide_dispersion`: Separate contributions to total dispersion.  

3. **Effective Index**  
   - `effective_index_at_min`: Effective refractive index at minimum wavelength.  
   - `effective_index_at_max`: Effective refractive index at maximum wavelength.  
   - `effective_index_change`: Change in refractive index across the range.

4. **Material Properties**  
   - `waveguide_material`: Core material (e.g., Silicon Nitride).  
   - `cladding_material`: Cladding material (e.g., Silicon Dioxide).  

5. **Loss and Environmental Parameters**  
   - `propagation_loss_min` and `propagation_loss_max` (dB/cm): Losses at wavelength limits.  
   - `temperature` (°C): Operating temperature.  
   - `signal_bandwidth` (GHz): Signal bandwidth.  
   - `device_length` (mm): Waveguide length.

6. **Metadata**  
   - `measurement_method`: Method used for data collection (e.g., Optical Time Domain Reflectometry).  
   - `measurement_uncertainty` (%): Error margin in data.

---

## Example Row
```text
wavelength_min                = 1260.0  
wavelength_max                = 1625.0  
group_index_min               = 1.50500  
group_index_max               = 1.52500  
chromatic_dispersion          = 10.25  
mode_group_delay_min          = 0.12  
mode_group_delay_max          = 0.18  
effective_index_at_min        = 1.45200  
effective_index_at_max        = 1.45900  
effective_index_change        = 0.00700  
waveguide_material            = Silicon Nitride (Si₃N₄)  
cladding_material             = Silicon Dioxide (SiO₂)  
propagation_loss_min          = 0.2  
propagation_loss_max          = 0.4  
measurement_method            = Optical Time Domain Reflectometry  
measurement_uncertainty       = 1.5  
temperature                   = 25.0  
signal_bandwidth              = 50.0  
device_length                 = 10.0  
material_dispersion           = 3.20  
waveguide_dispersion          = 7.05  

How to Use 💡

  1. Download/Clone

    • Download the dataset manually or use Hugging Face’s datasets library:
      from datasets import load_dataset
      
      dataset = load_dataset("username/frequency-dispersion")
      
  2. Loading and Exploration

    • Load into Python using pandas for quick exploration:
      import pandas as pd
      
      df = pd.read_csv("frequency-dispersion.csv")
      print(df.head())
      
  3. Machine Learning

    • Use the dataset for regression tasks like predicting chromatic dispersion or group delay:
      features = df[[
          "wavelength_min", "wavelength_max", "temperature", 
          "signal_bandwidth", "device_length"
      ]]
      target = df["chromatic_dispersion"]
      
      # Train a regression model, e.g., scikit-learn, XGBoost, etc.
      
  4. Performance Simulation

    • Model frequency dispersion effects and validate designs against target specifications.

Caveats & Limitations ⚠️

  • Synthetic Data: Generated based on typical photonic designs and may not represent all real-world scenarios.
  • Simplifications: Assumes ideal waveguides with no fabrication-induced imperfections.
  • Measurement Noise: measurement_uncertainty is a simulated value, not derived from real measurements.

License 📄

This dataset is available under the MIT License. You are free to modify, distribute, and use it for commercial or non-commercial purposes—just provide attribution.


Citation & Acknowledgments 🙌

If you use this dataset in your research or applications, please cite it as follows:

@misc{frequency_dispersion_dataset_2025,
  title  = {Frequency Dispersion Dataset (Synthetic)},
  author = {https://huggingface.co/Taylor658},
  year   = {2025},
  how published = {\url{https://huggingface.co/datasets/taylor658/frequency-dispersion}}
}

Contributing 🧑‍💻

We welcome contributions!