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:
Mar. 12, 2002
Filed:
Apr. 24, 1998
Applicant:
Inventors:
Theodoor Charlouis Damen, Colts Neck, NJ (US);
Jagdeep Shah, Holmdel Township, Monmouth County, NJ (US);
Masahiro Tsuchiya, Tokyo, JP;
Assignee:
Agere Systems Optoelectronics Guardian Corp., Orlando, FL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H09J 1/402 ;
U.S. Cl.
CPC ...
H09J 1/402 ;
Abstract
A new method and apparatus provide efficient highly non-degenerate four-wave mixing (FWM) signal in a semiconductor quantum well microcavity device. The phase mismatch between beam incidence angle and microcavity resonance frequency is minimized by using obliquely incident pump and probe beams. The FWM device is used to implement a wavelength multiplexer, a demultiplexer, a packet wavelength multiplexer, a packet demultiplexer, a time division multiplexer, a time division demultiplexer, a wavelength converter, and a wavelength switch.