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:
Jun. 12, 2007
Filed:
Feb. 10, 2005
Ruldolf J. Hofmeister, Sunnyvale, CA (US);
Samantha R. Bench, Whitefish, MT (US);
Dmitri Bannikov, Mountain View, CA (US);
Ruldolf J. Hofmeister, Sunnyvale, CA (US);
Samantha R. Bench, Whitefish, MT (US);
Dmitri Bannikov, Mountain View, CA (US);
Finisar Corporation, Sunnyvale, CA (US);
Abstract
An exemplary optoelectronic transceiverincorporating features of the present invention is shown in FIGS.and. The transceivercontains a receiver circuit, a transmitter circuit, a power supply voltageand ground connections. The receiver circuit of the transceiver includes a Receiver Optical Subassembly (ROSA), which may contain a mechanical fiber receptacle as well as a photodiode and pre-amplifier (preamp) circuit. The ROSAis in turn connected to a post-amplifier (postamp) integrated circuit, the function of which is to generate a fixed output swing digital signal which is connected to outside circuitry via the RX+ and RX− pins. The postamp circuitalso often provides a digital output signal known as Signal Detect or Loss of Signal indicating the presence or absence of suitably strong optical input. The postamp circuitdoes not necessarily have to be used to generate the Signal Detect or Loss of signal. In alternative embodiments, the postamp circuitcould be replaced with a CDR ('Clock Data Recovery') or a demux chip, which embodiments are not shown.