The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 28, 1996
Filed:
Feb. 18, 1994
Applicant:
Inventors:
Anthony L Moretti, Naperville, IL (US);
Frank A Chambers, Warrenville, IL (US);
Assignee:
E-Systems, Inc., Dallas, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
385129 ; 385-1 ; 385 14 ; 385131 ; 257 22 ; 359248 ; 437107 ;
Abstract
A waveguide type electro-absorptive optical modulator that resists damage to its input facet and methods for minimizing or eliminating optical and electrical damage to the input facet of waveguide type electro-absorptive modulator by fabrication of an electrically isolated region in the modulator's waveguide proximate the input facet by forming an ion implantation region in at least one waveguide confinement rib proximate the input facet, a signal contact end on the at least one rib that is recessed from the plane of the input facet, or both.