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:
Nov. 16, 2004
Filed:
Jun. 17, 2002
Yasuhisa Kaneko, Kanagawa, JP;
You Kondoh, Yamato, JP;
Agilent Technologies, Inc., Palo Alto, CA (US);
Abstract
Optical signal storage devices are described. In one aspect, an optical signal storage device includes an optical memory loop and a substrate. The substrate carries an input optical port, an output optical port, an optical signal path that is coupled between the input and output optical ports, an optical memory path that is coupled to complete the optical memory loop, and an optical read/write controller that is coupled between the optical signal path and the optical memory path. The optical read/write controller is operable to selectively transmit light between the optical signal path and the optical memory path based on received control light. In another aspect, the optical read/write controller comprises at least one saturable absorber optical switch having a transmittance that varies nonlinearly with received light intensity so that light is selectively transmittable between the optical memory loop and the input and output optical ports based on received control light.