Trw Limited

New Focus, Inc.

Michael P Nesnidal

Michael G Wickham

Robert A Marsland, Jr

Timothy A Vang

Srinath Kalluri

Doyle T Nichols

Robert Sylvester Williamson, Iii

Robert W Lodenkamper

A waveguide ( ) is provided having a two-dimensional optical wavelength Bragg grating ( ) embedded within a semiconductor laser medium ( ). More particularly, the waveguide ( ) includes an active region ( ) sandwiched between n-doped and p-doped cladding layers ( ). The two-dimensional Bragg grating ( ) is formed in the active region ( ). Upper and lower electrodes ( ) are defined on opposite sides of the cladding layers ( ) to complete the waveguide structure ( ). The two-dimensional grating ( ) provides simultaneous frequency selective feedback for mode control in both the longitudinal and lateral directions.

High power single mode semiconductor lasers and optical amplifiers using 2D Bragg gratings

An optical receiver may include a photodector defined on a multilayer semiconductor structure. A first electrode may be formed by at least two substantially concentric conductive rings electrically coupled to one another and to a portion of a first layer of the multilayer semiconductor structure. A second electrode may be coupled to a second layer of the multilayer semiconductor structure and configured to transfer current generated by the photodetector in response to optical emissions. A method of fabricating such an optical receiver is also disclosed.

Method and apparatus for optical reception

Growing community of inventors

Madison, WI, United States of America

Michael P Nesnidal