Reply To: is there optical threshold functions in optic system?

[stack programerParticipant]

thanks for reply.
this article use this technique
https://www.osapublishing.org/ao/abstract.cfm?uri=ao-51-36-8693
you can see snapshot of it,threshold functions in optic
https://drive.google.com/open?id=0Bxkt-d32S34gOG5tWV9hcXY1NjA