Optical waveguides – With disengagable mechanical connector – Optical fiber to a nonfiber optical device connector
Reexamination Certificate
2011-07-12
2011-07-12
Le, Uyen-Chau N (Department: 2874)
Optical waveguides
With disengagable mechanical connector
Optical fiber to a nonfiber optical device connector
C398S139000
Reexamination Certificate
active
07976225
ABSTRACT:
The present invention includes an optical transceiver having a fiber module with an optical data input and an electrical data output. The fiber module further includes a signal detect output that indicates the receipt of valid optical data. A physical layer device having a receive input is coupled to the electrical data output through a switch that is controlled by the signal detect output. The switch passes electrical data from the electrical data output of the fiber module to the receive input when the signal detect output indicates the receipt of valid optical data, and does not pass the electrical data when the signal detect output indicates invalid optical data. By using this configuration, the signal detects pins of the physical layer device are eliminated. In another embodiment, the switch is not utilized, and the electrical data output of the transceiver is ac-coupled to the differential receive input of the physical layer device. In this embodiment, the transceiver does not output electrical data when the optical data signal is invalid. Therefore, electrical data is identified at the receive input by the detection of a voltage variation on the differential receive input.
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Pharn Art
Vafiades Todd
Broadcom Corporation
Chu Chris H
Le Uyen-Chau N
Sterne Kessler Goldstein & Fox P.L.L.C.
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