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:
Jun. 11, 1991
Filed:
Apr. 14, 1989
David A Kahn, Nepean, CA;
Northern Telecom Limited, Montreal, CA;
Abstract
An optical receiver includes a reverse biassed photodiode whose output is coupled to a transimpedance amplifier. A load impedance for the photodiode comprises a forward biassed semiconductor diode, enabling the photodiode to be biassed using a low voltage supply. A signal compressing arrangement can be provided between the transimpedance amplifier output and the semiconductor diode on the side thereof remote from the photodiode. The transimpedance amplifier can have a capacitive transimpedance element; a filter, including an open circuit transmission line, is described which is coupled to the output of such an optical receiver to provide a desirable form of optical receiver arrangement. The capacitive transimpedance element can be constituted by a capacitance of the photodiode.