Patent ID: 7864396

Claim:
A vertical cavity modulator/detector (VCMD) device comprising: a n-type contact layer; a substrate having a recess formed therein, a portion of said substrate being between said recess and said n-type contact layer, said portion of said substrate including a transparent tuning layer; a multiple quantum well structure; a p-type contact layer; a low reflectance mirror defined at an interface between said transparent tuning layer and said recess and positioned to enable light in said recess to penetrate into said transparent tuning layer; and a high reflectance mirror, said multiple quantum well structure being positioned between said high reflectance mirror and said transparent tuning layer; wherein said n-type contact layer, said transparent tuning layer, said multiple quantum well structure and said p-type contact layer are arranged in a stack between said low reflectance mirror and said high reflectance back mirror.