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:
Aug. 27, 2002
Filed:
Oct. 09, 1998
Applicant:
Inventor:
Richard Bendicks Bylsma, Allentown, PA (US);
Assignee:
Agere Systems Guardian Corp., Orlando, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 1/002 ;
U.S. Cl.
CPC ...
H04B 1/002 ;
Abstract
The invention is a method and apparatus for controlling the wavelength of a first optical component such as a laser. The light from the laser is coupled to a second optical component, such as a modulator, which produces an output which is function of the wavelength of the light and also a function of voltage applied to the second component. The light from the second component is converted to an electrical signal, and the derivative of the amplitude of the signal with respect to voltage is determined. The derivative is used as a basis for an error signal which controls the wavelength of the first component.