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:
Nov. 10, 1987
Filed:
May. 15, 1985
Applicant:
Inventors:
Chin B Su, Newton, MA (US);
Vincent A Lanzisera, Northboro, MA (US);
Richard I Freeman, Reading, MA (US);
Assignee:
GTE Laboratories Incorporated, Waltham, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 44 ; 357 17 ; 372 26 ;
Abstract
A new method for increasing the modulation bandwidth of InGaAsP lasers is described herein. The method of the present invention is based on the gain enhancement doping of the lasers active layer. Lasers with highly doped active regions were demonstrated to have larger modulation bandwidths than lightly doped devices.