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:
Apr. 12, 2005
Filed:
Mar. 20, 2001
Sigurd Wagner, Princeton, NJ (US);
Matthias Wagner, Boston, MA (US);
Eugene Y. MA, Brookline, MA (US);
Adam M. Payne, Princeton, NJ (US);
Sigurd Wagner, Princeton, NJ (US);
Matthias Wagner, Boston, MA (US);
Eugene Y. Ma, Brookline, MA (US);
Adam M. Payne, Princeton, NJ (US);
Aegis Semiconductor, Inc., Woburn, MA (US);
Abstract
Materials suitable for fabricating optical monitors include amorphous, polycrystalline and microcrystalline materials. Semitransparent photodetector materials may be based on silicon or silicon and germanium alloys. Conductors for connecting to and contacting the photodetector may be made from various transparent oxides, including zinc oxide, tin oxide and indium tin oxide. Optical monitor structures based on PIN diodes take advantage of the materials disclosed. Various contact, lineout, substrate and interconnect structures optimize the monitors for integration with various light sources, including vertical cavity surface emitting laser (VCSEL) arrays. Complete integrated structures include a light source, optical monitor and either a package or waveguide into which light is directed.