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:
May. 04, 2010
Filed:
Sep. 23, 2008
Jinxiang Liu, Singapore, SG;
Huijie Du, Singapore, SG;
Jinxiang Liu, Singapore, SG;
HuiJie Du, Singapore, SG;
Finisar Corporation, Sunnyvale, CA (US);
Abstract
An AC differential connection assembly between a trans-impedance amplifier and a post amplifier for burst mode receiving comprising means for coupling a differential output of the trans-impedance amplifier to a differential input of the post amplifier, the means for coupling comprises a coupling capacitor assembly; and a switching circuit coupled across the differential input of the post amplifier, the switching circuit having an 'on' state with low impedance and an 'off' state with high impedance; wherein during burst mode receiving, the switching circuit is in the ‘off’ state and the coupling capacitor assembly having a time constant to maintain a stable DC level such that a payload is received accurately by the differential input of the post amplifier; and during an idle period, the switching circuit is in the ‘on’ state and the coupling capacitor assembly having a time constant to recover a DC level of the differential output of the trans-impedance amplifier.