Assertion: diode's layer | /r/CapableOf | confine the light
Facets:
value: effectively
type: MANNER
Source sentences:
text: The problem with the simple quantum well diode described above is that the thin layer is simply too small to effectively confine the light.
text: The middle layer in a quantum well laser can be too thin to confine light, so additional layers with a low refractive index have to be added in order to effectively confine light.
text: These layers have a lower refractive index than the centre layers, and hence confine the light effectively.