Table 1.
Summary table of pros (+) and cons (-) of the different kinds of integrated spectrometers.
| WdM/WM | Spectrometer Type | Subtype | Pros | Cons |
|---|---|---|---|---|
| WdM | Dispersive | 1D (slab) phase shift | + Simple design + High measuring speed |
- Limited spectral range - Low resolution |
| 2D phase shift | + High measuring speed | - More complex fabrication - Low resolution - Larger footprint |
||
| Filter-based | Non-resonant | + Wide spectral range + High resolution + Tunable options |
- Lower spectral resolution - Larger footprint - Power hungry |
|
| Resonant | + High spectral selectivity + Compact and integrable design |
- Sensitive to temperature variations - Fabrication complexity |
||
| WM | Fourier transform spectrometers | Spatially modulated | + High spectral resolution + High throughput (Jacquinot advantage) |
- Requires precise alignment - Potentially complex readout |
| Temporally modulated | + Very high spectral resolution (depending on delay range) | - Complex for broadband spectrometers - Requires sophisticated processing |