Photonic device and method for making same

Abstract

A monolithic device for photonically coupling a first optical waveguide to a second optical waveguide, including: an input being optically coupled to the first waveguide; a first portion being optically coupled to the input; a second portion being optically coupled to the first portion; and, an output being optically coupled to the second portion and the second waveguide; wherein, when an optical signal is provided on the first waveguide, a given part of the signal is provided to the second waveguide dependently upon an angle between the first and second portions. At least one of the waveguides may have an amorphous silicon material coating.

1 . A device comprising a multi-mode interference coupler at least partially coated with an amorphous silicon material having a selectable refractive index.  
   
   
       2 . A monolithic device for photonically coupling a first optical waveguide to a second optical waveguide, comprising: 
 an input optically coupled to the input;    a first portion optically coupled to the input;    a second portion optically coupled to the first portion;    an amorphous silicon material having a selectable refractive index coated on at least one of the first and second portions; and    an output optically coupled to the second portion and the second waveguide, wherein when an optical signal is provided on said first waveguide, a given part of said signal is provided to said second waveguide dependent upon an angle between said first and second portions.    
   
   
       3 . The device of  claim 2 , wherein at least one of the first waveguide and the second waveguide is coated with an amorphous silicon material having a selectable index of refraction.  
   
   
       4 . A device comprising an optical waveguide at least partially coated with an amorphous silicon material having a selectable index of refraction.