Component · Photonics, MEMS & Sensors
Echelle grating
An on-chip wavelength demultiplexer using a curved, etched reflective grating inside a slab region, dispersing wavelengths to separate output waveguides in a single compact device.
- Also known as
- Planar concave grating, EDG
- Type
- Component
- Domain
- Photonics, MEMS & Sensors, Silicon photonics
Notes
More compact than an AWG but more sensitive to etched-facet roughness, which drives excess loss.
Related terms
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