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. 18, 2005
Filed:
Oct. 03, 2002
Masahiro Oikawa, Osaka, JP;
Ken Yamashita, Osaka, JP;
Koichiro Nakamura, Osaka, JP;
Chandrasekhar Roychoudhuri, Storrs, CT (US);
Vladimir V. Serikov, Bonita, CA (US);
Masahiro Oikawa, Osaka, JP;
Ken Yamashita, Osaka, JP;
Koichiro Nakamura, Osaka, JP;
Chandrasekhar Roychoudhuri, Storrs, CT (US);
Vladimir V. Serikov, Bonita, CA (US);
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
An optical circuit is designed with demultiplexing and optical detection functionality with minimal crosstalk. An Nth order harmonic generation device is positioned before the demultiplexer to either convert the frequency or down convert the wavelength of the demultiplexed light wave by N-times. Upconverting the multiplexed signal at the receiver station is performed by either simultaneously upconverting N-times to create N times the original spacing between each optical channel or by upconverting the frequency of one optical channel at a time.