Preamplifier and optical receiving apparatus using the same

Details Preamplifier and optical receiving apparatus using the same Preamplifier and optical receiving apparatus using the same

2011-06-14

2011-06-14

Bello, Agustin (Department: 2613)

Optical communications

Receiver

C398S208000, C398S072000

Reexamination Certificate

active

07962047

ABSTRACT:
When an optical signal that is a wide dynamic range and different in level depending on burst signals is input as in a GPON system, a preamplifier can stably control the gain within a short preamble. The gain changeover of the preamplifier is controlled by the aid of timing information that is extracted from a data signal as data count number, to change over the gain at a high speed and with high precision. A level detector, a preamble recovery, a counter, and a control circuit are disposed within the preamplifier in addition to a TIA main body. In order to suppress the band deterioration or the phase margin reduction which are attributable to the gain changeover, there is provided a bias terminal for conducting a current injection and a current drawing with respect to the signal amplification transistor of the TIA main body.

REFERENCES:
patent: 6246282 (2001-06-01), Oono et al.
patent: 6337887 (2002-01-01), Oono
patent: 7809285 (2010-10-01), Nishimura et al.
patent: 2006/0257153 (2006-11-01), Furudate et al.
patent: 2007/0071455 (2007-03-01), Margalit et al.
patent: 2007/0081827 (2007-04-01), Ide et al.
patent: 2008/0013962 (2008-01-01), Nishikawa
patent: 2008/0205906 (2008-08-01), Murata
patent: 2009/0252504 (2009-10-01), Noda et al.
patent: 6-318908 (1994-11-01), None
patent: 2004-180176 (2004-06-01), None
patent: 2005-086466 (2005-03-01), None

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