Optical transceiver having optical receiver with function to...

Details Optical transceiver having optical receiver with function to... Optical transceiver having optical receiver with function to...

2005-11-30

2009-06-30

Tran, Dzung D (Department: 2613)

Optical communications

Optical transceiver

Including compensation

C398S130000, C398S139000

Reexamination Certificate

active

07555218

ABSTRACT:
An optical transceiver is disclosed, in which a noise attributed to the large current switching in the optical transmitter and superposed on the signal line in the optical receiver is effectively eliminated. The optical transceiver includes a noise generator and a delay circuit. The noise generator generates a compensation signal from the input signal of the optical transmitter. The compensation signal, having the same waveform and the phase with the noise superposed on the signal line, is input in the main amplifier. Since the phase of noise is delayed by the delay circuit, the main amplifier may cancel the noise as the common mode noise.

REFERENCES:
patent: 5652425 (1997-07-01), Sawada et al.
patent: 5949566 (1999-09-01), Takano
patent: 6862306 (2005-03-01), Shimizu
patent: 2004/0028156 (2004-02-01), Sefidvash et al.
patent: 2005/0019036 (2005-01-01), Soto et al.
patent: 4101206 (1991-07-01), None
patent: 2002-335215 (2002-11-01), None

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