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:
Dec. 30, 2008
Filed:
Feb. 28, 2005
Phil Shapiro, Palo Alto, CA (US);
Phil Shapiro, Palo Alto, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
This disclosure is generally concerned with devices for determining photocurrent levels. One example of such a device is an optoelectronic transceiver that includes a laser and a photodetector. The photodetector is configured to receive an optical signal and generate a corresponding electrical signal. The electrical signal is received by a first stage circuit which then converts the received electrical signal to a differential output. Finally, a second stage circuit in communication with the first stage circuit is configured to derive an optical signal strength of the optical signal based upon the differential output received from the first stage circuit.