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:
Jan. 07, 1986
Filed:
Jul. 11, 1984
Applicant:
Inventors:
Dean Z Tsang, Waltham, MA (US);
James N Walpole, Concord, MA (US);
Assignee:
Massachusetts Institute of Technology, Cambridge, MA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372 26 ;
Abstract
An amplitude-modulated diode laser, fabricated from a double heterostructure wafer, having a passive central layer which is partially doped to permit amplification. Losses are modulated in another section of the wafer, electrically isolated from the doped amplifying section, by reverse biasing a P-N junction also formed by doping.