Title :
A rib optical waveguide with cutoff mesa isolation
Author :
Vawter, G. Allen ; Smith, Robert E. ; Fuchs, Benjamin ; Wendt, J.R. ; Hadley, G Ronald
Author_Institution :
Sandia Nat. Labs., Albuquerque, NM
fDate :
2/1/1996 12:00:00 AM
Abstract :
A rib optical waveguide using the concept of optical cutoff to provide isolation between adjacent waveguides in a photonic integrated circuit is disclosed. Due to the evanescent nature of light propagation in cutoff waveguides, this cutoff mesa rib waveguide permits fabrication of single-moded rib waveguides with minimal self-interference and crosstalk by means of light guided in a remaining slab waveguide. Design rules are given and operation of a single-moded cut-off mesa rib waveguide and an MZI using this waveguide are demonstrated
Keywords :
integrated optoelectronics; optical crosstalk; optical isolators; optical waveguide theory; rib waveguides; MZI; Mach Zehnder interferometer; adjacent waveguides; crosstalk; cutoff mesa isolation; cutoff mesa rib waveguide; cutoff waveguides; design rules; evanescent nature; light propagation; minimal self-interference; photonic integrated circuit; rib optical waveguide; single-moded cut-off mesa rib waveguide; single-moded rib waveguide fabrication; slab waveguide; Etching; Optical crosstalk; Optical refraction; Optical scattering; Optical signal processing; Optical surface waves; Optical variables control; Optical waveguides; Semiconductor waveguides; Slabs;
Journal_Title :
Lightwave Technology, Journal of
