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:
Jul. 02, 2002
Filed:
Apr. 25, 2000
Hisao Nakajima, Bagneux, FR;
Alcatel, Paris, FR;
Abstract
In a semiconductor device ( ) for the transmission-reception of modulated optical signals having a semiconductor substrate on which are monolithically integrated a transmitter ( ) able to transmit a signal formed by a modulated light carried by a first wavelength, a receiver ( ) able to detect a reception signal formed by a modulated light carried by a second wavelength is also provided a sensor ( ) of a signal representative of extraneous noise and subtraction means ( ) for subtracting from the reception signal a compensation signal formed from the signal representing the extraneous noise detected by the sensor ( ). The invention also relates to a process in which the extraneous noise is detected in the vicinity of the receiver and from the signal received by the receiver is subtracted a signal formed from the detected extraneous noise signal.