Le 2011/04/12 14:33, Orchid XP v8 a écrit :

> The article linked claims that materials with a "non-linear refractive
> index" can be used to make signals interact. It also suggests that this
> is much less efficient than semiconductors.
>

There are cases where an interface can switch from pass through to 
reflective depending on a controll light beam.
You can selectively change the reflective capacity of very narow bands. 
You can reflect at 952nm but not 950nm nor 954nm if you want to.


Alain

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