Optical waveguide device and method for fabricating the same

   
   

An optical waveguide comprising an MgO substrate 10, and a slab waveguide layer 24 formed on the MgO substrate 10 and including a core layer 18 of a ferroelectric or an antiferroelectric, further comprises a stress alleviating layer 12 which substantially lattice-matches with the MgO substrate and the slab waveguide layer 24 and has an average thermal expansion coefficient in the range of 7.0.times.10.sup.-6 -14.0.times.10.sup.-6 /.degree. C. at the room temperature to 700.degree. C. Accordingly, the optical waveguide device utilizing the magnesium oxide substrate can be formed without breaking the optical waveguide layer and the magnesium oxide substrate itself.

 
Web www.patentalert.com

< Method for producing pure melamine

< Electrostatic image developer

> Packable ceramic beads for bone repair

> Furnace for carbonizing

~ 00172