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. 10, 2014
Filed:
Jan. 06, 2012
Patrick Decker, Marietta, GA (US);
Subhash Roy, Lexington, MA (US);
Igor Zhovnirovsky, Newton, MA (US);
Patrick Decker, Marietta, GA (US);
Subhash Roy, Lexington, MA (US);
Igor Zhovnirovsky, Newton, MA (US);
Applied Micro Circuits Corporation, San Diego, CA (US);
Volex PLC, London, GB;
Abstract
A method is provided for demultiplexing optical signals. A first photodiode accepts first optical signals in a first range of wavelengths with second optical signals in a second range of wavelengths greater than the first range. First electrical signals are generated in the first photodiode in response to the first optical signals. A second photodiode accepts the second optical signals, and generates second electrical signals in response to the second optical signals. The first photodiode substantially absorbs photons associated with the first optical signal, and substantially passes photons associated with the second optical signals. In one aspect, the first photodiode has a first coefficient of absorption associated with the first range of wavelengths and the second photodiode has a second coefficient of absorption and a half value layer (HVL) associated with the second range of wavelengths. The first photodiode has thickness less than the HVL of the second photodiode.