Update README.md

README.md

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----
-license: mit
----
+
+```yaml
+---
+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: "1.0.0"
+---
+```
+
+# 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:  
+     ```python
+     from datasets import load_dataset
+
+     dataset = load_dataset("username/frequency-dispersion")
+     ```
+
+2. **Loading and Exploration**  
+   - Load into Python using `pandas` for quick exploration:
+     ```python
+     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:  
+     ```python
+     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:
+
+```bibtex
+@misc{frequency_dispersion_dataset_2025,
+  title  = {Frequency Dispersion Dataset (Synthetic)},
+  author = {https://huggingface.co/Taylor658},
+  year   = {2025},
+  how published = {\url{https://huggingface.co/datasets/username/frequency-dispersion}}
+}
+```
+
+---
+
+## Contributing 🧑‍💻
+We welcome contributions! 
+
+
+
+