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:
Apr. 22, 2003
Filed:
Jul. 18, 2001
Applicant:
Inventors:
Johannes G. Ransijn, Wyomissing Hills, PA (US);
James D. Yoder, Leola, PA (US);
Assignee:
Agere Systems Inc., Allentown, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
G02F 1/03 ; G02F 1/00 ; G02F 1/035 ; H04B 1/004 ; G02B 6/10 ;
U.S. Cl.
CPC ...
G02F 1/03 ; G02F 1/00 ; G02F 1/035 ; H04B 1/004 ; G02B 6/10 ;
Abstract
An electro-optic modulator and associated method are provided. The electro-optic modulator includes an optical waveguide comprised of two pairs of coplanar modulation strips, the strips being driven by a controller circuit which applies voltages of equal amplitude and opposite polarity to the strips of each pair. The voltage applied to the first pair of strips may differ from the voltage applied to the second pair of strips, so that a chirp factor may be adjusted if desired. The modulator and associated method exhibit reduced drive voltage requirements.