Objective:

To develop a hybrid silicon photonic and computational spectrometer that achieves high resolution and broad bandwidth in a compact footprint.

Key Findings:

• Achieved picometer-scale reconstructed resolution across a broad bandwidth.
• Resolved 49 absorption lines in a dense hydrogen cyanide spectrum with high accuracy.
• Demonstrated improved performance over commercial optical spectrum analyzers.

Interpretation:

The platform excels in recovering analytically useful spectra from a compact single-channel system, indicating potential for practical applications in portable sensing.

Limitations:

• Numerical stability and device simplicity may be compromised in some computational methods.
• Further development needed for broader array architectures and faster tuning schemes.

Conclusion:

The co-design strategy offers a promising pathway for the development of compact, high-resolution spectrometers suitable for various applications.